WO2006119080A2 - Apparatus and method for generation of ultra low momentum neutrons - Google Patents

Apparatus and method for generation of ultra low momentum neutrons Download PDF

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WO2006119080A2
WO2006119080A2 PCT/US2006/016379 US2006016379W WO2006119080A2 WO 2006119080 A2 WO2006119080 A2 WO 2006119080A2 US 2006016379 W US2006016379 W US 2006016379W WO 2006119080 A2 WO2006119080 A2 WO 2006119080A2
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protons
neutrons
deuterons
metallic
ulmns
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PCT/US2006/016379
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WO2006119080A3 (en
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Lewis G. Larsen
Alan Widom
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Larsen Lewis G
Alan Widom
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Priority to US11/912,793 priority Critical patent/US20080232532A1/en
Priority to EP06751867A priority patent/EP1880393A2/en
Publication of WO2006119080A2 publication Critical patent/WO2006119080A2/en
Publication of WO2006119080A3 publication Critical patent/WO2006119080A3/en

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05HPLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H3/00Production or acceleration of neutral particle beams, e.g. molecular or atomic beams
    • H05H3/06Generating neutron beams
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/10Nuclear fusion reactors

Definitions

  • the present invention concerns apparatus and methods for the generation of extremely low energy neutrons and applications for such neutrons.
  • Neutrons are uncharged elementary fermion particles that, along with protons (which are positively charged elementary fermion particles), comprise an essential component of all atomic nuclei except for that of ordinary hydrogen.
  • Neutrons are well known to be particularly useful for inducing various types of nuclear reactions because, being uncharged, they are not repelled by Coulombic repulsive forces associated with the positive electric charge contributed by protons located in an atomic nucleus.
  • Free neutrons are inherently unstable outside of the immediate environment in and around an atomic nucleus and have an accepted mean life of about 887 to 914 seconds; if they are not captured by an atomic nucleus, they break up via beta decay into an electron, a proton, and an anti-neutrino.
  • Neutrons are classified by their levels of kinetic energy; expressed in units measured in MeV, meV, KeV, or eV — Mega-, milli-, Kilo- electron Volts.
  • energy levels of free neutrons can range from: (1) ultracold to cold (nano eVs to 25 meV); (2) thermal (in equilibrium with environment at an E approx.
  • reaction capture The degree to which a given free neutron possessing a particular level of energy is able to react with a given atomic nucleus/isotope via capture (referred to as the reaction capture "cross section” and empirically measured in units called “barns") is dependent upon: (a) the specific isotope of the nucleus undergoing a capture reaction with a free neutron, and (b) the mean velocity of a free neutron at the time it interacts with a target nucleus.
  • isotopes can behave very differently after capturing free neutrons.
  • Some isotopes are entirely stable after the capture of one or more free neutrons (e.g., isotopes of Gadolinium (Gd), atomic number 64: 154 Gd to 155 Gd to 156 Gd).
  • Gd Gadolinium
  • atomic number 64 154 Gd to 155 Gd to 156 Gd.
  • superscripts at the top left side (or digits to the left side) of the elemental symbol represent atomic weight.
  • Some isotopes absorb one or more neutrons, forming a more neutron-rich isotope of the same element, and then beta decay to another element. Beta decay strictly involves the weak interaction, because it results in the production of neutrinos and energetic electrons (known as ⁇ -particles).
  • isotopes also enter unstable excited states after capturing one or more free neutrons, but subsequently "relax" to lower energy levels through spontaneous fission of the "parent" nucleus.
  • de-excitation processes start being dominated by fission reactions (involving the strong interaction) and alpha particle (Helium-4 nuclei) emission rather than beta decays and emission of energetic electrons and neutrinos.
  • Such fission processes can result in the production of a wide variety of "daughter” isotopes and the release of energetic particles such as protons, alphas, electrons, neutrons, and/or gamma photons (e.g., the isotope 252 Cf of Californium, atomic number 98).
  • Fission processes are commonly associated with certain very heavy (high A) isotopes that can produce many more neutrons than they "consume” via initial capture, thus enabling a particular type of rapidly escalating cascade of neutron production by successive reactions commonly known as a fission "chain reaction” (e.g., the uranium isotope 235 U, atomic number 92; or the plutonium isotope Pu, atomic number 94).
  • a fission "chain reaction” e.g., the uranium isotope 235 U, atomic number 92; or the plutonium isotope Pu, atomic number 94.
  • each external free “trigger” neutron releases another 100 neutrons in the resulting chain reaction.
  • Isotopes that can produce chain reactions are known as fissile.
  • Stellar nucleosynthesis is a complex collection of various types of nuclear processes and associated nuclear reaction networks operating across an extremely broad range of astrophysical environments, stellar evolutionary phenomena, and time-spans. According to current thinking, these processes are composed of three broad classes of stellar nucleosynthetic reactions as follows:
  • RU2160938 (entitled “Ultracold Neutron Generator,” by Vasil et al, dated December 20, 2000) and RU2144709 (entitled “Ultracold Neutron Production Process,” by Jadernoj et al., dated January 20, 2000) both utilize either large macroscopic nuclear fission reactors or accelerators as neutron sources to create thermal neutrons, which are then subsequently extracted and brought down to "ultracold" energies with certain neutron moderators that are cooled-down to liquid helium temperatures.
  • An object of the present invention is to provide method and apparatus for directly producing large fluxes of ultra low momentum neutrons (ULMNs) that possess much lower momentum and velocities than ultracold neutrons.
  • ULMNs ultra low momentum neutrons
  • such fluxes of ULMNs produced in the apparatus of the Invention may be as high as ⁇ 10 16 neutrons/sec/cm 2 .
  • Another object of the present invention is to generate ULM neutrons at or above room temperature in very tiny, comparatively low cost apparatus/devices.
  • a further obj ect of the present invention is to generate ULM neutrons without requiring any moderation; that is, without the necessity of deliberate "cooling" of its produced neutrons using any type of neutron moderator.
  • a further object of the present invention is to utilize controlled combinations of starting materials and successive rounds of ULM neutron absorption and beta decays to synthesize stable, heavier (higher-A) elements from lighter starting elements, creating transmutations and releasing additional energy in the process.
  • Yet another object of the present invention is to produce neutrons with extraordinarily high absorption cross-sections for a great variety of isotopes/elements. Because of that unique characteristic, the ULMN absorption process is extremely efficient, and neutrons will very rarely if ever be detected externally, even though large fluxes of ULMNs are being produced and consumed internally within the apparatus of the invention.
  • One specific object of the present invention is to produce neutrons at intrinsically very low energies, hence the descriptive term "ultra low momentum" neutrons.
  • ULM neutrons have special properties because, according to preferred aspects of the invention, they are formed collectively at extraordinarily low energies (which is equivalent to saying that at the instant they are created, ULMNs are moving at extraordinarily small velocities, v, approaching zero). Accordingly, they have extremely long quantum mechanical wavelengths that are on the order of one to ten microns (i.e., 10,000 to 100,000 Angstroms). By contrast, a "typical" neutron moving at thermal energies in condensed matter will have a quantum mechanical wavelength of only about 2 Angstroms. By comparison, the smallest viruses range in size from 50 to about 1,000 Angstroms; bacteria range in size from 2,000 to about 500,000 Angstroms.
  • the present invention has numerous features providing methods and apparatus that utilize surface plasmon polariton electrons, hydrogen isotopes, surfaces of metallic substrates, collective many-body effects, and weak interactions in a controlled manner to generate ultra low momentum neutrons that can be used to trigger nuclear transmutation reactions and produce heat.
  • One aspect of the present invention effectively provides a "transducer" mechanism that permits controllable two-way transfers of energy back-and-forth between chemical and nuclear realms in a small-scale, low-energy, scalable condensed matter system at comparatively modest temperatures and pressures.
  • One aspect of the invention provides a neutron production method in a condensed matter system at moderate temperatures and pressures comprising the steps of providing collectively oscillating protons, providing collectively oscillating heavy electrons, and providing a local electric field greater than approximately 10 n volts/meter.
  • Another aspect of the invention provides a method of producing neutrons comprising the steps of: providing a hydride or deuteride on a metallic surface; developing a surface layer of protons or deuterons on said hydride or deuteride; developing patches of collectively oscillating protons or deuterons near or at said surface layer; and establishing surface plasmons on said metallic surface.
  • Another aspect of the invention provides a method of producing ultra low momentum neutrons ("ULMNs") comprising: providing a plurality of protons or deuterons on a working surface of hydride/deuteride-forming materials; breaking down the Born-Oppenheimer approximation in patches on said working surface; producing heavy electrons in the immediate vicinity of coherently oscillating patches of protons and/or deuterons; and producing said ULMNs from said heavy electrons and said protons or deuterons.
  • ULMNs ultra low momentum neutrons
  • a nuclear process using weak interactions comprising: forming ultra low momentum neutrons (ULMNs) from electrons and protons/deuterons using weak interactions; and locally absorbing said ULMNs to form isotopes which undergo beta-decay after said absorbing.
  • ULMNs ultra low momentum neutrons
  • a method of generating energy At first sites, the method produces neutrons intrinsically having, upon their creation, ultra low momentum (ULMNs).
  • ULMNs ultra low momentum
  • a lithium target is disposed at a second site near said first sites in a position to intercept said ULMNs.
  • the ULMNs react with the Lithium target to produce Li-7 and Li-8 isotopes.
  • the lithium isotopes decay by emitting electrons and neutrinos to form Be-8; said Be-8 decaying to He-4. This reaction produces a net heat of reaction.
  • the foregoing method of producing energy may further comprise producing helium isotopes by reacting helium with ULMNs emitted from said first sites to form He-5 and He-6; the He-6 decaying to Li-6 by emitting an electron and neutrino; the helium-to-lithium reactions yielding a heat of reaction and forming a nuclear reaction cycle.
  • the present invention also provides a method of producing heavy electrons comprising: providing a metallic working surface capable of supporting surface plasmons and of forming a hydride or deuteride; fully loading the metallic surface with H or D thereby to provide a surface layer of protons or deuterons capable of forming coherently oscillating patches; and developing at least one patch of coherently or collectively oscillating protons or deuterons on the surface layer.
  • the present invention also provides apparatus for a nuclear reaction.
  • Such apparatus comprises: a supporting material; a thermally conductive layer; an electrically conductive layer in contact with at least a portion of said thermally conductive layer; a cavity within said supporting material and thermally conductive layer; a source of hydrogen or deuterium associated with said cavity; first and second metallic hydride-forming layers within said cavity; an interface between a surface of said first hydride-forming layer, said interface being exposed to hydrogen or deuterium from said source; a first region of said cavity being located on one side of said interface and having a first pressure of said hydrogen or deuterium; a second region of said cavity being located on one side of said second hydride- forming layer and having a second pressure of said hydrogen or deuterium; said first pressure being greater than said second pressure; said apparatus forming a sea of surface plasmon polaritons and patches of collectively oscillating protons or deuterons, and ultra low momentum neutrons in a region both above and below said interface.
  • a neutron generator for producing ultra low momentum neutrons comprising: a metallic substrate having a working surface capable of supporting surface plasmons and of forming a hydride or deuteride, located above the substrate.
  • the metallic substrate is fully loaded with hydrogen or deuterium; a surface layer of protons or deuterons. At least one region of collectively oscillating protons or deuterons is on said surface layer, and surface plasmons are located above the surface layer and said region.
  • a flux of protons or deuterons is incident on said surface plasmons, surface layer, and working surface.
  • a plurality of target nanoparticles can be positioned on the working surface.
  • the Born-Oppenheimer approximation breaks down on the upper working surface.
  • the invention may further comprise laser radiation incident on said working surface to stimulate and transfer energy into said surface plasmons.
  • Figure 1 is a representative side view of a ULMN generator according to aspects of the present invention.
  • Figure 2 is a representative top view of the ULMN generator of Figure 1 ;
  • Figure 3 is a representative side view of a ULMN generator according to aspects of the present invention, including optional nanoparticles;
  • Figure 4 is a representative top view of the ULM generator of Figure 3 with randomly positioned nanoparticles affixed to the working surface;
  • Figure 5 is a representative schematic side sketch of one alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention.
  • FIG. 6 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention.
  • FIG. 7 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention.
  • Figure 8 is a sketch useful in understanding some of the physics used in aspects of the present invention.
  • One feature of the present invention provides a method for the creation of
  • ULMN-catalyzed LENRs in preferred target materials for the generation of excess heat and/or for inducing transmutation reactions that are used to create other desired isotopes of commercial value.
  • Excess heat can be converted into other usable forms of energy using various preferred types of energy conversion technologies used in power generation.
  • an apparatus or method according to one aspect of the present invention forms neutrons from protons or deuterons and heavy electrons using the weak interaction. According to another aspect, it produces neutrons that intrinsically have very low momentum.
  • the heavy electrons that react with protons or deuterons to produce ULM neutrons and neutrinos serve a dual role by also effectively serving as a "gamma shield" against energetic gamma- and hard X-ray photons that may be produced as a result of ULM neutron absorption by nuclei and/or as a result of subsequent nuclear decay processes.
  • ULMNs are created solely through weak interactions between protons or deuterons and "heavy" electrons as defined in a paper by A. Widom and L. Larsen, the present inventors, entitled: "Ultra Low Momentum Neutron Catalyzed Nuclear Reactions on Metallic Hydride Surfaces," available on the Cornell pre-print server as arXiv:cond-mat/0505026 vl dated May 2, 2005, and further published in The European Physical Journal C- Particles and Fields (Digital Object Identifier 10.1140/epjc/s2006-02479-8).
  • heavy electrons may serve as a built-in gamma shield, as defined in a paper by A. Widom and L. Larsen, the present inventors, entitled: "Absorption of Nuclear Gamma Radiation by Heavy Electrons on Metallic Hydride Surfaces,” also available on the Cornell pre-print server as arXivxond- mat/0509269 vl dated September 10, 2005.
  • Heavy electrons formed in the preferred practice of the present invention have a unique property in that they have the ability to fully absorb a gamma ray photon coming from any direction and re-emit the absorbed energy in the form of an appropriately large number (based upon the conservation of energy) of lower-energy photons, mostly in the infrared, IR, with a small amount of radiation in the soft X-ray bands.
  • gamma photons in the energy range of ⁇ 0.5 MeV to ⁇ 10.0 MeV are effectively "shielded” and converted into primarily infrared photons which are then in turn absorbed by nearby surrounding materials, thus producing heat.
  • the present invention requires little or no shielding against hard radiation produced by LENRs within the apparatus.
  • ULMNs have enormously larger absorption cross sections for virtually any given isotope of an element. Accordingly, according to another aspect of the present invention, ULMNs produced by the present invention are captured with extremely high efficiency in neighboring target materials in close proximity to their creation site, thus forming neutron-rich isotopes. Specifically, since large fluxes of ULM neutrons with very large absorption cross-sections are produced in the invention, multiple neutrons can be absorbed by a many nuclei before the next beta decay, thus creating extremely neutron-rich, unstable intermediate isotope products. With very few exceptions, such unstable, ultra neutron-rich isotopes decay extremely rapidly via chains of successive beta decays, forming stable higher-A isotopes as end-products.
  • This novel feature of the invention results in there being little or no residual long-lived radioactivity after ULM neutron production shuts down.
  • This attribute of the invention in conjunction with extremely efficient absorption of ULMNs, production of large fluxes of ULMNs (as much as 10 16 ULMNs/sec/cm 2 ), and intrinsic suppression of hard radiation emission, will enable the development of a new type of much safer, lower-cost nuclear power generation technology that is based primarily on the weak interaction (neutron absorption and beta decays) rather than the strong interaction (fission, fusion).
  • neutron-rich isotopes of many elements are short-lived and decay mainly via weak interaction beta processes.
  • Individual beta decays can be very energetic, and can have positive Q-values ranging up to -20 MeV.
  • Q-values of many beta decays thus compare favorably to net Q-values that are achievable with D-D/ D-T fusion reactions (total ⁇ 25 MeV). Chains of energetic beta decays can therefore be utilized for generating power.
  • the present invention's novel approach to nuclear power generation is based primarily on utilization of the weak interaction.
  • chains of reactions characterized mainly by absorption of ULMNs and subsequent beta decays are employed (LENRs).
  • preferred ULMN-catalyzed chains of nuclear reactions may have biologically benign beta decays interspersed with occasional "gentle" fissions of isotopes of other elements and occasional alpha-particle decays. These may have Q-values ranging up to several MeV, in sharp contrast to the very energetic 200+ MeV Q-value of the fission of very high-A, U. It is important to note that significant fluxes of very high energy fission neutrons have never once been detected experimentally in LENR systems.
  • the invention utilizes primarily low energy, weak interaction nuclear processes, any production of large, biologically dangerous fluxes of hard radiation (very energetic X- and gamma rays), energetic neutrons, and long-lived highly radioactive isotopes can be avoided.
  • hard radiation very energetic X- and gamma rays
  • energetic neutrons and long-lived highly radioactive isotopes
  • waste disposal problems are obviated, in sharp contrast to existing nuclear fission and fusion technologies based on the strong interaction.
  • no Coulomb barrier is involved in weak interactions and absorption of ULMNs, the invention's LENRs can take place under moderate physical conditions, unlike currently envisioned D-T (deuterium-tritium) fusion reactors.
  • Condensed matter quantum electrodynamic processes may also shift the densities of final states allowing an appreciable production of ultra low momentum neutrons which are thereby efficiently absorbed by nearby nuclei. No Coulomb barriers exist for the weak interaction neutron production or other resulting catalytic processes.”
  • the required electron mass renormalization is provided by the interaction between surface electron plasma oscillations and surface proton oscillations.
  • the resulting neutron catalyzed low energy nuclear reactions emit copious prompt gamma radiation.
  • the heavy electrons which induce the initially produced neutrons also strongly absorb the prompt nuclear gamma radiation. Nuclear hard photon radiation away from metallic hydride surfaces is thereby strongly suppressed.”
  • the present invention utilizes weak interactions between protons (p+) and "heavy" electrons (e h " ) to produce a neutron (n u i m ) and a neutrino (v e )as follows:
  • the Coulomb barrier is not a factor in either of these reactions. In fact, in this situation, unlike charges actually help these reactions to proceed.
  • LNRs represents a broad descriptive term encompassing a complex family of low energy nuclear reactions catalyzed by ULMNs. As explained in the referenced papers by Widom and Larsen, creation of ULMNs on surfaces requires a breakdown of the Born- Oppenheimer approximation, collectively oscillating "patches” of protons or deuterons, as well as excited surface plasmons and fully loaded metal hydrides.
  • ULMNs and resulting LENRs are absorbed by nearby atoms
  • ULMNs are absorbed by nearby atoms
  • small, solid-state nanodomains dimensions on the order of tens of microns or less
  • a metal and a dielectric such as a ceramic solid-state proton conductor.
  • production of high local fluxes of ULMNs enables LENRs to be triggered in nearby materials.
  • preferred local isotopic compositions can generate substantial amounts of excess heat that can then, for example, be transferred to another device and converted into electricity or rotational motion.
  • ULMN generator according to aspects of the present invention. It consists of: randomly positioned surface "patches" from one to ten microns in diameter comprising a monolayer of collectively oscillating protons or deuterons 10; a metallic substrate 12 which may or may not form bulk hydrides; collectively oscillating surface plasmon polariton electrons 14 that are confined to metallic surface regions (at an interface with some sort of dielectric) within a characteristic skin depth averaging 200 - 300 Angstroms for typical metals such as copper and silver; an upper working region 16 which may be filled with a liquid, gas, solid-state proton conductor, or a mild vacuum; other substrate 18 which must be able to bond strongly with the metal substrate 12 and have good thermal conductivity but which may or may not be permeable to hydrogen or deuterium and/or form hydrides; and the working surface 20 of the metallic substrate 12 which may or may not have nanoparticles of differing compositions affixed to it.
  • the upper working region 16 either contains a source of pro
  • Figure 2 is a representative top view of the apparatus of Fig. 1 according to aspects of the present invention. It shows randomly positioned "patches" of collectively oscillating protons or deuterons 10 located on top of the metallic substrate 12 and its working surface 20.
  • Figure 3 is a representative side view of a ULMN generator according to aspects of the present invention. It shows the ULM generator of Figure 1 with randomly positioned nanoparticles 22 affixed to the working surface 20. It is important that the maximum dimensions of the nanoparticles are less than the skin depth 14.
  • Figure 4 is a representative top view of a ULMN generator according to aspects of the present invention. It shows the ULM generator of Figure 3 with randomly positioned nanoparticles 22 affixed to the working surface 20.
  • FIG. 5 is a representative schematic side view of one alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention. It shows a pressurized reservoir of hydrogen or deuterium gas 24 connected via a valve 26 and related piping with an one-way check valve and inline pump 28 that injects gas under pressure (> 1 atmosphere) into a sealed container with two open cavities 30, 32 separated and tightly sealed from each other by a one or two layer ULM neutron generator.
  • the side walls 34 of the cavities 30, 32 are thermally conductive, relatively inert, and serve mainly to provide support for the ULM neutron generator.
  • the top and bottom walls 36, 38 of the two cavities 30, 32 are preferably constructed of materials that are thermally conductive.
  • the top 36 and bottom 38 walls can be made electrically conductive and a desired electrical potential gradient can be imposed across the ULM generator.
  • the ULM generator can optionally be constructed with two layers 12, 18, both of which must be able to form bulk metallic hydrides, but their materials are selected to maximize the difference in their respective work functions at the interface between them.
  • Each layer 12, 18 of the ULM generator must preferably be made thicker than the skin depth of surface plasmon polaritons, which is about 20 - 50 nanometers in typical metals.
  • a semiconductor laser 40 is optionally installed, it should be selected to have the highest possible efficiency and its emission wavelengths chosen- to closely match the resonant absorption peaks of the SPPs found in the particular embodiment.
  • the pressure gradient (from 1 up to 10 atmospheres) across the ULM generator insures that a sufficient flux of protons or deuterons is passing through the generator's working surface 20.
  • the outermost walls of the container 44, completing enclosing the ULM generator unit can be either solid-state thermoelectric/thermionic modules, or alternatively a material/subsystem that has an extremely high thermal conductivity such as copper, aluminum, Dylyn diamond coating, PocoFoam, or specially engineered heat pipes.
  • the ULM generator In the case of the alternative embodiment having a ULM generator integrated with thermoelectric/thermionic devices, high quality DC power is generated directly from the ULM generator's excess heat; it serves as a fully integrated power generation system.
  • the ULM generator functions as an LENR heat source that can be integrated as the "hot side" with a variety of different energy conversion technologies such as small steam engines (which can either run an electrical generator or rotate a driveshaft) and Stirling engines.
  • FIG. 6 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention. It shows a subsystem 46 containing a ULM generator heat source (such as illustrated in Fig. 5) combined with a thermal transfer subsystem 48 that transfers heat to a steam engine 50 that converts heat into rotational motion that can either be used turn a driveshaft or an AC electrical generator. Overall operation of the ULM-based integrated power generation system is monitored and controlled by another subsystem 52 comprised of sensors, actuators, and microprocessors linked by communications pathways 54.
  • Figure 7 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention.
  • the first step in the operation of the Invention is to deliberately "load" 90 - 99% pure hydrogen or deuterium into a selected hydride-forming metallic substrate 12 such as palladium, nickel, or titanium.
  • a selected hydride-forming metallic substrate 12 such as palladium, nickel, or titanium.
  • alternative preferred methods for such loading include a: 1. Pressure gradient; 2. Enforced difference in chemical potential; and/or 3. Imposition of electrochemical potential across the working surface.
  • protons or deuterons When a metallic hydride substrate 12 is "fully loaded” (that is, the ratio of H or D to metal lattice atoms in the metallic hydride substrate reaches a preferred value of 0.80 or larger), protons or deuterons begin to "leak out” and naturally form densely covered areas in the form of "patches” 10 or “puddles” of positive charge on the working surface 20 of the metallic hydride substrate 12. The appearance of these surface patches of protons or deuterons can be seen clearly in thermal neutron scattering data. These surface patches 10 of protons or deuterons have dimensions that are preferably from one to ten microns in diameter and are scattered randomly across the working surface 20. Importantly, when these surface patches 10 form, the protons or deuterons that comprise them spontaneously begin to oscillate together, collectively, in unison.
  • Electromagnetic coupling between SPP electrons 14 and collectively oscillating patches of protons or deuterons dramatically increases strength of electric fields in the vicinity of the patches 10.
  • the masses of local SPP electrons 14 exposed to the very high fields preferably > 10 ⁇ Volts/meter
  • Such field strengths are essentially equivalent to those normally experienced by inner-shell electrons in typical atoms.
  • heavy electrons, e*- are created in the immediate vicinity of the patches 10 in and around the working surface 20.
  • SPP electrons 14 in and around the patches can be heavy, those located away from the patches are not.
  • ULM generators with an upper working region 16 that is filled with hydrogen or deuterium gas are more tractable from a surface stability standpoint, as compared to electrolytic ULM generators using an aqueous electrolyte in which the nanoscale surface features of the cathodes typically change dramatically over time.
  • Figures 3 and 4 illustrate a ULM generator in which nanoparticles 22 are fabricated and affixed to its working surface 20.
  • Figure 3 is a representative side view, not drawn to scale;
  • Figure 4 is a representative top view, also not drawn to scale.
  • a ULM neutron generator would be constructed with a metallic substrate 12 that forms hydrides or deuterides, such as palladium, titanium, or nickel, or alloys thereof.
  • substrate is a working surface 20 capable of supporting surface plasmon polaritons 14 and the attachment of selected nanoparticles 22.
  • the thickness of the substrate 12 and the diameter of the surface nanoparticles 22 should be fabricated so that they do not exceed the skin depth of the SPPs 14.
  • the substrate 12 is fully loaded with H or D and the working surface 20 has an adequate coverage of patches 10 of protons or deuterons.
  • the surface nanoparticles 22 serve as preferred target materials for ULM neutron absorption during operation of the generator.
  • One example of a preferred nanoparticle target material for ULMN power generation applications are a variety of palladium-lithium alloys.
  • Palladium-lithium alloys represent an example of a preferable nanoparticle target material because: (a.) certain lithium isotopes have intrinsically high cross-sections for neutron absorption; (b.) nanoparticles composed of palladium-lithium alloys adhere well to palladium substrates; (c.) palladium-lithium alloys readily form hydrides, store large amounts of hydrogen or deuterium, and load easily; and finally (d.) there is a reasonably small, neutron-catalyzed LENR reaction network starting with Lithium-6 that produces substantial amounts of energy and forms a natural nuclear reaction cycle. Specifically, this works as follows (the graphic is excerpted from the referenced Widom-Larsen paper that published in The European Physical Journal C - Particles and Fields):
  • the net amount of energy (Q) released in the above LENR network compares favorably with that of strong interaction fusion reactions, yet it does not result in the production of energetic neutrons, hard radiation, or long-lived radioactive isotopes. Thus, substantial amounts of heat energy can be released safely by guiding the course of complex LENR nucleosynthetic and decay processes.
  • FIG. 8 is a representative sketch useful in understanding some of the scientific principles that are involved in various aspects of the present invention.
  • heavy electrons are produced in very high local collectively oscillating patches of protons or deuterons. These heavy electrons combine with the protons or deuterons to form the desired neutrons.
  • These ULM neutrons having extremely large cross sections of absorption, are quickly absorbed by the materials or targets in or upon the metallic substrate. As isotopes are produced, neutrinos and other reaction products are produced.
  • O dynamic processes may also shift the densities of final states allowing an appreciable production O of extremely low momentum neutrons which are thereby efficiently absorbed by nearby nuclei. No Coulomb barriers exist for the weak interaction neutron production or other resulting catalytic processes.
  • R f c(i) is the position of the k th proton at time is the polarization response function V ⁇ (x, y) arising t.
  • V ⁇ v ( ⁇ , y) ⁇ (J ⁇ ( ⁇ )J v (y)) + . (10) given by
  • Eq. (25) also holds true.
  • the value of ⁇ in Eq. (23) is simemployed to build heavy helium "halo nuclei" yielding ilar in magnitude for both the proton and the deuterium oscillation cases at hand. Since each deuterium electron lffe + i IHe , Theory of Interscience, 17, 48 (1935). 9 (1937). L.M. Led- Phys. Rev. G. Rev. C63, Theory of Press, Oxford Pitaevskii, Butter- the above reactions depend on the original production 107 (2001). Rev. 110, 130 (1960). and Academy of and neutrinos via the capture by protons of heavy Theory of Thermal NeuNew York (1996). Udovic, J.J. Rush, W. and D.Richter J. to the effective mass. There is no Coulomb barrier and I. Morrison, struction to the resulting neutron catalyzed nuclear Jap. J. Appl. Phys. Chemistry and Physics Raton (2000). Table of Radioactive (1999).
  • Low energy nuclear reactions in the neighborhood of metallic hydride surfaces may be induced by ultra-low momentum neutrons.
  • Heavy electrons are absorbed by protons or deuterons producing ultra low momentum neutrons and neutrinos.
  • the required electron mass renormalization is provided by the interaction between surface electron plasma oscillations and surface proton oscillations.
  • the resulting neutron catalyzed low energy nuclear reactions emit copious prompt gamma radiation.
  • LNR Low energy nuclear reactions
  • h ⁇ is of the order of a few eleca cutoff of about 10 MeV based on the mass renormal- tron volts and typical particle-hole pair creation energies ization of the original electron.
  • the excited heavy elecnear the Fermi surface are also of the order of a few electron hole pair will annihilate, producing very many soft tron volts.
  • the resulting strong electronic absorption of photons based on the photon spectrum which produced optical photons is most easily described by the metallic such a mass renormalization.
  • the dual role of the heavy electrical conductivity. For hard photons with an energy electrons is discussed in the concluding Sec. VT.
  • the heavy electrons are absorbed by protons creating tronic particle-hole solid state excitations with an energy ultra-low momentum neutrons and neutrinos which catspread which is so very large.
  • a normal metal is thus alyze further LENR, e.g. subsequent neutron captures ordinarily transparent to hard gamma rays. on nearby nuclei.
  • the heavy electrons also allow for the
  • the ultra low momentum neutron is created when a gamma radiation.
  • An absorbed hard gamma photon can heavy electron is absorbed by one of many protons parbe re-emitted as a very large number of soft photons, e.g. ticipating in a collective surface oscillation.
  • the neutron infrared and/or X-ray.
  • the mean free path of a hard wave length is thus comparable to the spatial size of the gamma photon estimated from physical kinetics [9] has collective oscillation, say ⁇ ⁇ 10 ⁇ 3 cm. With (for exthe form ample) 6 ⁇ 10 ⁇ 13 cm and n ⁇ 10 22 cm "3 , one finds a
  • Eqs.(24), (26) and (27) constitute the "unperturbed" B.
  • the hard gamma photons may thereafter be Suppose that the electron is in the field of soft radiatreated employing low order perturbation theory. Two tion.
  • the electron may be within a plane specific examples should suffice to illustrate the point. wave laser radiation beam.
  • an additional hard gamma photon is incident upon the electron. In this case (unlike the vacuum case) the hard photon
  • a classical free electron has a Hamilton-Jacobi action
  • the same electromagnetic oscillations which The heavy electron current response to the prompt hard increase the electron mass, also allow for the absorption photon may be written as of hard gamma photons by the surface heavy electron.
  • T(I- + 7 ⁇ SJ) ⁇ J J%(x)A ⁇ (x)d 4 x
  • function II depends on the soft radiation field which renormalized the electron mass in the first place.
  • the metallic hydride surface teracting with protons or deuterons is thus opaque to hard photons but not to softer X-ray radiation in the KeV regime.
  • surface heavy electrons play a r +d + n + n + i/ e . (49) dual role in allowing both Eqs,(49) for catalyzing LENR and Eq. (50) for absorbing the resulting hard prompt pho ⁇
  • the resulting ultra low momentum neutrons catalyze a tons.
  • the heavy surface electrons can act as a variety of different nuclear reactions, creating complex gamma ray shield.
  • nuclear reaction networks and related transmutations creating heavy electrons cease, ultra low momentum neuover time.

Abstract

Method and apparatus for generating ultra-low momentum neutrons ('ULMNs') using surface plasmon polariton electrons 14, hydrogen isotopes 10, surfaces 20 of metallic substrate 12, collective many-body effects, and weak interactions in a controlled manner. The ULMNs can be used to trigger nuclear transmutation reactions and produce heat. One aspect of the present invention effectively provides a 'transducer' mechanism that permits controllable, low-energy, scalable condensed matter system at comparatively modest temperatures and pressures.

Description

APPARATUS AND METHOD FOR GENERATION OF ULTRA LOW MOMENTUM
NEUTRONS Co-Inventors: Lewis G. Larsen, Allan Widom
Cross Reference and Priority Claim
[0001] The present application claims the benefit of the following provisional patent applications by the present inventors: (a) "Apparatus and Method for Generation of Ultra Low Momentum Neutrons," filed at the U.S. Patent and Trademark Office on April 29, 2005 and having serial number 60/676,264; and (b) "Apparatus and Method for Absorption of Incident Gamma Radiation and Its Conversion to Outgoing Radiation at Less Penetrating, Lower Energies and Frequencies," filed at the U.S. Patent and Trademark Office on September 9, 2005 having serial number 60/715,622. Background of the Invention
[0002] The present invention concerns apparatus and methods for the generation of extremely low energy neutrons and applications for such neutrons. Neutrons are uncharged elementary fermion particles that, along with protons (which are positively charged elementary fermion particles), comprise an essential component of all atomic nuclei except for that of ordinary hydrogen. Neutrons are well known to be particularly useful for inducing various types of nuclear reactions because, being uncharged, they are not repelled by Coulombic repulsive forces associated with the positive electric charge contributed by protons located in an atomic nucleus. Free neutrons are inherently unstable outside of the immediate environment in and around an atomic nucleus and have an accepted mean life of about 887 to 914 seconds; if they are not captured by an atomic nucleus, they break up via beta decay into an electron, a proton, and an anti-neutrino. Neutrons are classified by their levels of kinetic energy; expressed in units measured in MeV, meV, KeV, or eV — Mega-, milli-, Kilo- electron Volts. Depending on the mean velocity of neutrons within their immediate physical environment, energy levels of free neutrons can range from: (1) ultracold to cold (nano eVs to 25 meV); (2) thermal (in equilibrium with environment at an E approx. = kT = 0.025 eV); (3) slow (0.025 eV to 100 eV — at around 1 eV they are called epithermal); (4) intermediate (100 eV to about 10 KeV); (5) fast (10 KeV to 10 MeV), to ultrafast or high-energy (above 10 MeV). The degree to which a given free neutron possessing a particular level of energy is able to react with a given atomic nucleus/isotope via capture (referred to as the reaction capture "cross section" and empirically measured in units called "barns") is dependent upon: (a) the specific isotope of the nucleus undergoing a capture reaction with a free neutron, and (b) the mean velocity of a free neutron at the time it interacts with a target nucleus.
[0003] It is well known that, for any specific atomic isotope, the capture cross section for reactions with externally supplied free neutrons scales approximately inversely proportional to velocity (1/v). This means that the lower the mean velocity of a free neutron (i.e., the lower the momentum) at the time of interaction with a nucleus, the higher its absorption cross section will be, i.e., the greater the probability that it will react successfully and be captured by a given target nucleus/isotope.
[0004] Different atomic isotopes can behave very differently after capturing free neutrons. Some isotopes are entirely stable after the capture of one or more free neutrons (e.g., isotopes of Gadolinium (Gd), atomic number 64: 154Gd to 155Gd to 156Gd). (As used herein, superscripts at the top left side (or digits to the left side) of the elemental symbol represent atomic weight.) Some isotopes absorb one or more neutrons, forming a more neutron-rich isotope of the same element, and then beta decay to another element. Beta decay strictly involves the weak interaction, because it results in the production of neutrinos and energetic electrons (known as β-particles). In beta decay, the neutron number (N) goes down by one; the number of protons (atomic number = Z = nuclear charge) goes up by one; the atomic mass (A = Z + N) is unchanged. Higher-Z elements are thus produced from lower-Z "seed" elements. Other atomic isotopes enter an unstable excited state after capturing one or more free neutrons, and "relax" to a lower energy level by releasing the excess energy through the emission of photons such as gamma rays (e.g., the isotope Cobalt- 60 [60Co], atomic number 27). Yet other isotopes also enter unstable excited states after capturing one or more free neutrons, but subsequently "relax" to lower energy levels through spontaneous fission of the "parent" nucleus. At very high values of A, de-excitation processes start being dominated by fission reactions (involving the strong interaction) and alpha particle (Helium-4 nuclei) emission rather than beta decays and emission of energetic electrons and neutrinos. Such fission processes can result in the production of a wide variety of "daughter" isotopes and the release of energetic particles such as protons, alphas, electrons, neutrons, and/or gamma photons (e.g., the isotope 252Cf of Californium, atomic number 98). Fission processes are commonly associated with certain very heavy (high A) isotopes that can produce many more neutrons than they "consume" via initial capture, thus enabling a particular type of rapidly escalating cascade of neutron production by successive reactions commonly known as a fission "chain reaction" (e.g., the uranium isotope 235U, atomic number 92; or the plutonium isotope Pu, atomic number 94). For U, each external free "trigger" neutron releases another 100 neutrons in the resulting chain reaction. Isotopes that can produce chain reactions are known as fissile. Deliberately induced neutron- catalyzed chain reactions form the underlying basis for existing nuclear weapons and fission power plant technologies. Significant fluxes of free neutrons at various energies are useful in a variety of existing military, commercial, and research applications, with illustrative examples as follows. It should be noted that an advantage of the present invention is mentioned in the following Table I: -A-
Figure imgf000005_0001
Table I [0005]
[0006] Locations and Reaction Products of Fluxes of Free Neutrons Found in Nature:
[0007] Minor natural sources of free neutrons are produced by relatively rare accumulations of long-lived radioactive isotopes incorporated in a variety of minerals (e.g., Uraninite - UO2; with U comprised of about 99.28% of 238U and 0.72% 235U and a trace of 234U) found in planetary crusts, asteroids, comets, and interstellar dust. In addition to such radioactive isotopes and various man-made sources of free neutrons noted earlier, natural sources of significant fluxes of free neutrons are found primarily in stellar environments. In fact, since the Big Bang, nearly all of the elements and isotopes found in the Universe besides hydrogen and helium have been created by a variety of cosmic nucleosynthetic processes associated with various stages of stellar evolution.
[0008] Stellar nucleosynthesis is a complex collection of various types of nuclear processes and associated nuclear reaction networks operating across an extremely broad range of astrophysical environments, stellar evolutionary phenomena, and time-spans. According to current thinking, these processes are composed of three broad classes of stellar nucleosynthetic reactions as follows:
[0009] 1. Various nuclear reactions primarily involving fusion of nuclei and/or charged particles that start with hydrogen/helium as the initial stellar "feedstock" and subsequently create heavier isotopes up to 56Fe (iron), at which the curve of nuclear binding energy peaks. At masses above 56Fe, binding energies per nucleon progressively decrease; consequently, nucleosynthesis via fusion and charged particle reactions are no longer energetically favored. As a result, isotopes/elements heavier than 56Fe must be created via neutron capture processes. [0010] 2. S-Process - short-hand for the Slow (neutron capture) Process; it is thought to occur in certain evolutionary stages of cool giant stars. In this process, "excess" neutrons (produced in certain nuclear reactions) are captured by various types of "seed" nuclei on a long time-scale compared to β-decays. Heavier nuclides are built-up via successive neutron captures that ascend the so-called beta-stability valley from 56Fe (a common initial "seed" nucleus in stellar environments) all the way up to 209Bi (Bismuth). Masses above 209Bi require much higher neutron fluxes to create heavier elements such as Uranium (e.g. 238U).
[0011] 3. R-Process - short-hand for the Rapid (neutron capture) Process; -it is thought to occur in Type II supernovae and various high-energy events on and around neutron stars. In this process, intermediate products comprising very neutron-rich nuclei are built up by very large neutron fluxes produced under extreme conditions that are captured by various types of "seed" nuclei. These intermediate products then undergo a series of β- decays accompanied by fission of the heaviest nuclei. Ultimately, this process produces nuclei having even larger masses, i.e. above 209Bi, that are located on the neutron-rich side of the "valley of nuclear stability".
[0012 ] As evident from the Table I discussed above, various types of neutron generators have been known for many years. However, the neutron generators of the prior art do not produce ultra low momentum neutrons. Two prior publications have mentioned or involve "ultracold" neutrons (which are created at significantly higher energies and much greater momenta than "ultra low momentum" neutrons), but these are easily distinguished from the present invention. Specifically, RU2160938 (entitled "Ultracold Neutron Generator," by Vasil et al, dated December 20, 2000) and RU2144709 (entitled "Ultracold Neutron Production Process," by Jadernoj et al., dated January 20, 2000) both utilize either large macroscopic nuclear fission reactors or accelerators as neutron sources to create thermal neutrons, which are then subsequently extracted and brought down to "ultracold" energies with certain neutron moderators that are cooled-down to liquid helium temperatures.
[0013] An object of the present invention is to provide method and apparatus for directly producing large fluxes of ultra low momentum neutrons (ULMNs) that possess much lower momentum and velocities than ultracold neutrons. Illustratively, such fluxes of ULMNs produced in the apparatus of the Invention may be as high as ~1016 neutrons/sec/cm2.
[0014] Another object of the present invention is to generate ULM neutrons at or above room temperature in very tiny, comparatively low cost apparatus/devices.
[0015] A further obj ect of the present invention is to generate ULM neutrons without requiring any moderation; that is, without the necessity of deliberate "cooling" of its produced neutrons using any type of neutron moderator.
[0016] A further object of the present invention is to utilize controlled combinations of starting materials and successive rounds of ULM neutron absorption and beta decays to synthesize stable, heavier (higher-A) elements from lighter starting elements, creating transmutations and releasing additional energy in the process.
[0017] Yet another object of the present invention is to produce neutrons with extraordinarily high absorption cross-sections for a great variety of isotopes/elements. Because of that unique characteristic, the ULMN absorption process is extremely efficient, and neutrons will very rarely if ever be detected externally, even though large fluxes of ULMNs are being produced and consumed internally within the apparatus of the invention. One specific object of the present invention is to produce neutrons at intrinsically very low energies, hence the descriptive term "ultra low momentum" neutrons. ULM neutrons have special properties because, according to preferred aspects of the invention, they are formed collectively at extraordinarily low energies (which is equivalent to saying that at the instant they are created, ULMNs are moving at extraordinarily small velocities, v, approaching zero). Accordingly, they have extremely long quantum mechanical wavelengths that are on the order of one to ten microns (i.e., 10,000 to 100,000 Angstroms). By contrast, a "typical" neutron moving at thermal energies in condensed matter will have a quantum mechanical wavelength of only about 2 Angstroms. By comparison, the smallest viruses range in size from 50 to about 1,000 Angstroms; bacteria range in size from 2,000 to about 500,000 Angstroms. The great size of the domain of their wave function is the source of ULMNs' extraordinarily large absorption cross-sections; it enables them to be almost instantly absorbed by different local nuclei located anywhere within distances of up to 10,000 Angstroms from the location at which they are created. Summary of the Invention
[ 0018 ] The present invention has numerous features providing methods and apparatus that utilize surface plasmon polariton electrons, hydrogen isotopes, surfaces of metallic substrates, collective many-body effects, and weak interactions in a controlled manner to generate ultra low momentum neutrons that can be used to trigger nuclear transmutation reactions and produce heat. One aspect of the present invention effectively provides a "transducer" mechanism that permits controllable two-way transfers of energy back-and-forth between chemical and nuclear realms in a small-scale, low-energy, scalable condensed matter system at comparatively modest temperatures and pressures.
One aspect of the invention provides a neutron production method in a condensed matter system at moderate temperatures and pressures comprising the steps of providing collectively oscillating protons, providing collectively oscillating heavy electrons, and providing a local electric field greater than approximately 10n volts/meter. Another aspect of the invention provides a method of producing neutrons comprising the steps of: providing a hydride or deuteride on a metallic surface; developing a surface layer of protons or deuterons on said hydride or deuteride; developing patches of collectively oscillating protons or deuterons near or at said surface layer; and establishing surface plasmons on said metallic surface.
Another aspect of the invention provides a method of producing ultra low momentum neutrons ("ULMNs") comprising: providing a plurality of protons or deuterons on a working surface of hydride/deuteride-forming materials; breaking down the Born-Oppenheimer approximation in patches on said working surface; producing heavy electrons in the immediate vicinity of coherently oscillating patches of protons and/or deuterons; and producing said ULMNs from said heavy electrons and said protons or deuterons.
According to another aspect of the invention, a nuclear process is provided using weak interactions comprising: forming ultra low momentum neutrons (ULMNs) from electrons and protons/deuterons using weak interactions; and locally absorbing said ULMNs to form isotopes which undergo beta-decay after said absorbing.
According to a further aspect of the invention, a method of generating energy is provided. At first sites, the method produces neutrons intrinsically having, upon their creation, ultra low momentum (ULMNs). A lithium target is disposed at a second site near said first sites in a position to intercept said ULMNs. The ULMNs react with the Lithium target to produce Li-7 and Li-8 isotopes. The lithium isotopes decay by emitting electrons and neutrinos to form Be-8; said Be-8 decaying to He-4. This reaction produces a net heat of reaction.
The foregoing method of producing energy may further comprise producing helium isotopes by reacting helium with ULMNs emitted from said first sites to form He-5 and He-6; the He-6 decaying to Li-6 by emitting an electron and neutrino; the helium-to-lithium reactions yielding a heat of reaction and forming a nuclear reaction cycle.
The present invention also provides a method of producing heavy electrons comprising: providing a metallic working surface capable of supporting surface plasmons and of forming a hydride or deuteride; fully loading the metallic surface with H or D thereby to provide a surface layer of protons or deuterons capable of forming coherently oscillating patches; and developing at least one patch of coherently or collectively oscillating protons or deuterons on the surface layer.
In addition, the present invention also provides apparatus for a nuclear reaction. Such apparatus comprises: a supporting material; a thermally conductive layer; an electrically conductive layer in contact with at least a portion of said thermally conductive layer; a cavity within said supporting material and thermally conductive layer; a source of hydrogen or deuterium associated with said cavity; first and second metallic hydride-forming layers within said cavity; an interface between a surface of said first hydride-forming layer, said interface being exposed to hydrogen or deuterium from said source; a first region of said cavity being located on one side of said interface and having a first pressure of said hydrogen or deuterium; a second region of said cavity being located on one side of said second hydride- forming layer and having a second pressure of said hydrogen or deuterium; said first pressure being greater than said second pressure; said apparatus forming a sea of surface plasmon polaritons and patches of collectively oscillating protons or deuterons, and ultra low momentum neutrons in a region both above and below said interface. Optionally, a laser may be positioned to irradiate said sea and said interface. An electrically conductive layer may form a portion of an inside wall of the cavity.
Another aspect of the present invention provides a neutron generator for producing ultra low momentum neutrons ("ULMNs") comprising: a metallic substrate having a working surface capable of supporting surface plasmons and of forming a hydride or deuteride, located above the substrate. The metallic substrate is fully loaded with hydrogen or deuterium; a surface layer of protons or deuterons. At least one region of collectively oscillating protons or deuterons is on said surface layer, and surface plasmons are located above the surface layer and said region. A flux of protons or deuterons is incident on said surface plasmons, surface layer, and working surface. Optionally, a plurality of target nanoparticles can be positioned on the working surface.
Preferably, in the ULMN generator just mentioned, the Born-Oppenheimer approximation breaks down on the upper working surface. The invention may further comprise laser radiation incident on said working surface to stimulate and transfer energy into said surface plasmons. Brief Description of the Drawings
[0019] In describing examples of preferred embodiment of the present invention, reference is made to accompanying figures in which:
[0020] Figure 1 is a representative side view of a ULMN generator according to aspects of the present invention;
[0021] Figure 2 is a representative top view of the ULMN generator of Figure 1 ; [0022] Figure 3 is a representative side view of a ULMN generator according to aspects of the present invention, including optional nanoparticles;
[0023] Figure 4 is a representative top view of the ULM generator of Figure 3 with randomly positioned nanoparticles affixed to the working surface;
[0024] Figure 5 is a representative schematic side sketch of one alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention;
[0025] Figure 6 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention;
[0026] Figure 7 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention; and
[0027] Figure 8 is a sketch useful in understanding some of the physics used in aspects of the present invention.
Description of Preferred Embodiments of the Present Invention
[0028] One feature of the present invention provides a method for the creation of
(preferably large fluxes of) ultra low momentum neutrons in condensed matter systems, preferably at very moderate temperatures and pressures in various preferred types of very compact, comparatively low cost apparatus. Absorption of ULMNs by nuclei within the invention's apparatus initiates the formation of complex, coupled networks of local, neutron- catalyzed nuclear reactions that are broadly referred to herein as Low Energy Nuclear Reactions or LENRs.
[0029] Commercially, fluxes of such ULMNs can be utilized to trigger ULMN- catalyzed LENRs in preferred target materials for the generation of excess heat and/or for inducing transmutation reactions that are used to create other desired isotopes of commercial value. Excess heat can be converted into other usable forms of energy using various preferred types of energy conversion technologies used in power generation. [0030] Thus, an apparatus or method according to one aspect of the present invention forms neutrons from protons or deuterons and heavy electrons using the weak interaction. According to another aspect, it produces neutrons that intrinsically have very low momentum. According to yet another aspect, the heavy electrons that react with protons or deuterons to produce ULM neutrons and neutrinos serve a dual role by also effectively serving as a "gamma shield" against energetic gamma- and hard X-ray photons that may be produced as a result of ULM neutron absorption by nuclei and/or as a result of subsequent nuclear decay processes.
[0031] Preferably, in practicing the present invention, ULMNs are created solely through weak interactions between protons or deuterons and "heavy" electrons as defined in a paper by A. Widom and L. Larsen, the present inventors, entitled: "Ultra Low Momentum Neutron Catalyzed Nuclear Reactions on Metallic Hydride Surfaces," available on the Cornell pre-print server as arXiv:cond-mat/0505026 vl dated May 2, 2005, and further published in The European Physical Journal C- Particles and Fields (Digital Object Identifier 10.1140/epjc/s2006-02479-8). This contrasts sharply with the substantially "faster" (much higher momentum and kinetic energy) fission neutrons that are created via strong interactions involving high-A isotopes that are utilized in the existing nuclear power industry for generation of heat and transmutation of selected materials/isotopes. [0032 ] According to another aspect of the invention, heavy electrons may serve as a built-in gamma shield, as defined in a paper by A. Widom and L. Larsen, the present inventors, entitled: "Absorption of Nuclear Gamma Radiation by Heavy Electrons on Metallic Hydride Surfaces," also available on the Cornell pre-print server as arXivxond- mat/0509269 vl dated September 10, 2005. Heavy electrons formed in the preferred practice of the present invention have a unique property in that they have the ability to fully absorb a gamma ray photon coming from any direction and re-emit the absorbed energy in the form of an appropriately large number (based upon the conservation of energy) of lower-energy photons, mostly in the infrared, IR, with a small amount of radiation in the soft X-ray bands. In the range of heavy electron masses covered by the invention, gamma photons in the energy range of ~0.5 MeV to ~10.0 MeV are effectively "shielded" and converted into primarily infrared photons which are then in turn absorbed by nearby surrounding materials, thus producing heat. Since gamma photon energies from over 95% of all nuclear reactions fall within the natural active "shielding range" of the heavy electrons of the invention, very few energetic gammas will ever be detected outside the invention's apparatus. Consequently, from a biosafety perspective, the present invention requires little or no shielding against hard radiation produced by LENRs within the apparatus.
[0033] In comparison to thermal and fast neutrons (defined in Table I above),
ULMNs have enormously larger absorption cross sections for virtually any given isotope of an element. Accordingly, according to another aspect of the present invention, ULMNs produced by the present invention are captured with extremely high efficiency in neighboring target materials in close proximity to their creation site, thus forming neutron-rich isotopes. Specifically, since large fluxes of ULM neutrons with very large absorption cross-sections are produced in the invention, multiple neutrons can be absorbed by a many nuclei before the next beta decay, thus creating extremely neutron-rich, unstable intermediate isotope products. With very few exceptions, such unstable, ultra neutron-rich isotopes decay extremely rapidly via chains of successive beta decays, forming stable higher-A isotopes as end-products. This novel feature of the invention results in there being little or no residual long-lived radioactivity after ULM neutron production shuts down. This attribute of the invention, in conjunction with extremely efficient absorption of ULMNs, production of large fluxes of ULMNs (as much as 1016 ULMNs/sec/cm2), and intrinsic suppression of hard radiation emission, will enable the development of a new type of much safer, lower-cost nuclear power generation technology that is based primarily on the weak interaction (neutron absorption and beta decays) rather than the strong interaction (fission, fusion).
[0034] It is well known that neutron-rich isotopes of many elements (excluding certain very high-A elements such as uranium, plutonium) are short-lived and decay mainly via weak interaction beta processes. Individual beta decays can be very energetic, and can have positive Q-values ranging up to -20 MeV. Q-values of many beta decays thus compare favorably to net Q-values that are achievable with D-D/ D-T fusion reactions (total ~25 MeV). Chains of energetic beta decays can therefore be utilized for generating power. [0035] The present invention's novel approach to nuclear power generation is based primarily on utilization of the weak interaction. Preferably, chains of reactions characterized mainly by absorption of ULMNs and subsequent beta decays are employed (LENRs). hi some cases, preferred ULMN-catalyzed chains of nuclear reactions may have biologically benign beta decays interspersed with occasional "gentle" fissions of isotopes of other elements and occasional alpha-particle decays. These may have Q-values ranging up to several MeV, in sharp contrast to the very energetic 200+ MeV Q-value of the fission of very high-A, U. It is important to note that significant fluxes of very high energy fission neutrons have never once been detected experimentally in LENR systems. [0036] Importantly, since the invention utilizes primarily low energy, weak interaction nuclear processes, any production of large, biologically dangerous fluxes of hard radiation (very energetic X- and gamma rays), energetic neutrons, and long-lived highly radioactive isotopes can be avoided. Thus, the necessity for expensive shielding and containment of the invention's apparatus, and related waste disposal problems are obviated, in sharp contrast to existing nuclear fission and fusion technologies based on the strong interaction. Since no Coulomb barrier is involved in weak interactions and absorption of ULMNs, the invention's LENRs can take place under moderate physical conditions, unlike currently envisioned D-T (deuterium-tritium) fusion reactors.
[0037] Further scientific aspects of the present invention are set forth in the above- referenced paper by A. Widom and L. Larsen, the present inventors, entitled: "Ultra Low Momentum Neutron Catalyzed Nuclear Reactions on Metallic Hydride Surfaces." The referenced Widom-Larsen paper is incorporated by reference, is intended to form part of this disclosure, and is attached hereto. The abstract of the referenced paper states: "Ultra low momentum neutron catalyzed nuclear reactions in metallic hydride system surfaces are discussed. Weak interaction catalysis initially occurs when neutrons (along with neutrinos) are produced from the protons which capture "heavy" electrons. Surface electron masses are shifted upwards by localized condensed matter electric fields. Condensed matter quantum electrodynamic processes may also shift the densities of final states allowing an appreciable production of ultra low momentum neutrons which are thereby efficiently absorbed by nearby nuclei. No Coulomb barriers exist for the weak interaction neutron production or other resulting catalytic processes."
[0038] Similarly, further aspects of the present invention are set forth in the above- referenced paper by A. Widom and L. Larsen, the present inventors, entitled: "Absorption of Nuclear Gamma Radiation by Heavy Electrons on Metallic Hydride Surfaces," available on the Cornell pre-print server as arXiv:cond-mat/0509269 vl dated September 10, 2005. The referenced Widom-Larsen paper is incorporated by reference, is intended to form part of this disclosure, and is also attached hereto. The abstract of the referenced paper states: "Low energy nuclear reactions in the neighborhood of metallic hydride surfaces may be induced by heavy surface electrons. The heavy electrons are absorbed by protons producing ultra low momentum neutrons and neutrinos. The required electron mass renormalization is provided by the interaction between surface electron plasma oscillations and surface proton oscillations. The resulting neutron catalyzed low energy nuclear reactions emit copious prompt gamma radiation. The heavy electrons which induce the initially produced neutrons also strongly absorb the prompt nuclear gamma radiation. Nuclear hard photon radiation away from metallic hydride surfaces is thereby strongly suppressed."
[0039] While it is well known to use the strong interaction to achieve their primary utility as neutron generators, the present invention according to one of its aspects utilizes weak interactions between protons (p+) and "heavy" electrons (eh ") to produce a neutron (nuim) and a neutrino (ve)as follows:
eh " + p+ ► run + v~ e
[0040] The first referenced paper by Widom and Larsen explains the physics of how, under the appropriate conditions, a proton is able to capture a "heavy" electron to create an ultra low momentum neutron (n^) and a neutrino (photon). Similarly, they show how a deuteron ("D") can capture one "heavy" electron to create two ultra low momentum neutrons and a neutrino as follows:
eh " + D+ ► 2 nulm + v~ e
[0041] Importantly, the Coulomb barrier is not a factor in either of these reactions. In fact, in this situation, unlike charges actually help these reactions to proceed.
[0042] The second referenced paper by Widom and Larsen explains the physics of how, under the appropriate conditions in certain condensed matter systems, a heavy, mass renormalized electron can fully absorb a high-energy gamma photon and re-radiate the absorbed energy as a much larger number of much lower-energy photons, mostly in the infrared along with a small amount of soft X-rays. [0043] As noted earlier, quantum mechanical wave functions of ULMNs are very large, e.g., -10,000 to 100,000 Angstroms (1 - 10 microns); this is approximately the same size as coherent surface domain of oscillating protons or deuterons. According to Dr. S. K. Lamoreaux of Los Alamos National Laboratory, it would likely take roughly 1/10 to 2/10 of a millisecond for such a ULMN to interact with surrounding phonons in nearby materials and thermalize. As a newly created ULMN is "spooling-up" to much higher thermal energies, the spatial extent of its wave function (as well as implicitly, its capture cross section) will be contracting to dimensions (~2 Angstroms) and a related cross section that are "normal" for neutrons at such energies. However, the ULMN absorption process is so rapid and efficient that thermal neutrons will rarely if ever be released and detected outside the apparatus of the invention.
[0044] "LENRs" represents a broad descriptive term encompassing a complex family of low energy nuclear reactions catalyzed by ULMNs. As explained in the referenced papers by Widom and Larsen, creation of ULMNs on surfaces requires a breakdown of the Born- Oppenheimer approximation, collectively oscillating "patches" of protons or deuterons, as well as excited surface plasmons and fully loaded metal hydrides. Creation of ULMNs and resulting LENRs (as ULMNs are absorbed by nearby atoms) occurs in and around small, solid-state nanodomains (dimensions on the order of tens of microns or less) located on or very near metallic surfaces or at interfaces between a metal and a dielectric such as a ceramic solid-state proton conductor. In these small scale, nuclear-active domains, production of high local fluxes of ULMNs enables LENRs to be triggered in nearby materials. In certain preferred embodiments, preferred local isotopic compositions can generate substantial amounts of excess heat that can then, for example, be transferred to another device and converted into electricity or rotational motion. [0045] Turning now to the drawings, Figure 1 is a representative side view of a
ULMN generator according to aspects of the present invention. It consists of: randomly positioned surface "patches" from one to ten microns in diameter comprising a monolayer of collectively oscillating protons or deuterons 10; a metallic substrate 12 which may or may not form bulk hydrides; collectively oscillating surface plasmon polariton electrons 14 that are confined to metallic surface regions (at an interface with some sort of dielectric) within a characteristic skin depth averaging 200 - 300 Angstroms for typical metals such as copper and silver; an upper working region 16 which may be filled with a liquid, gas, solid-state proton conductor, or a mild vacuum; other substrate 18 which must be able to bond strongly with the metal substrate 12 and have good thermal conductivity but which may or may not be permeable to hydrogen or deuterium and/or form hydrides; and the working surface 20 of the metallic substrate 12 which may or may not have nanoparticles of differing compositions affixed to it. The upper working region 16 either contains a source of protons/deuterons or serves as a transport medium to convey ions, and/or electrons, and/or photons to the working surface 20 upon which the SPPs 14 are found.
[0046] Figure 2 is a representative top view of the apparatus of Fig. 1 according to aspects of the present invention. It shows randomly positioned "patches" of collectively oscillating protons or deuterons 10 located on top of the metallic substrate 12 and its working surface 20.
[0047] Figure 3 is a representative side view of a ULMN generator according to aspects of the present invention. It shows the ULM generator of Figure 1 with randomly positioned nanoparticles 22 affixed to the working surface 20. It is important that the maximum dimensions of the nanoparticles are less than the skin depth 14. [0048] Figure 4 is a representative top view of a ULMN generator according to aspects of the present invention. It shows the ULM generator of Figure 3 with randomly positioned nanoparticles 22 affixed to the working surface 20.
[0049] Figure 5 is a representative schematic side view of one alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention. It shows a pressurized reservoir of hydrogen or deuterium gas 24 connected via a valve 26 and related piping with an one-way check valve and inline pump 28 that injects gas under pressure (> 1 atmosphere) into a sealed container with two open cavities 30, 32 separated and tightly sealed from each other by a one or two layer ULM neutron generator. The side walls 34 of the cavities 30, 32 are thermally conductive, relatively inert, and serve mainly to provide support for the ULM neutron generator. The top and bottom walls 36, 38 of the two cavities 30, 32 are preferably constructed of materials that are thermally conductive. Optionally, in other alternative embodiments in which a laser 40 and electrical connector 42 is not optionally installed on the top wall 36, then the top 36 and bottom 38 walls can be made electrically conductive and a desired electrical potential gradient can be imposed across the ULM generator. If an additional chemical potential in the ULM generator is desirable, the ULM generator can optionally be constructed with two layers 12, 18, both of which must be able to form bulk metallic hydrides, but their materials are selected to maximize the difference in their respective work functions at the interface between them. Each layer 12, 18 of the ULM generator must preferably be made thicker than the skin depth of surface plasmon polaritons, which is about 20 - 50 nanometers in typical metals. If a semiconductor laser 40 is optionally installed, it should be selected to have the highest possible efficiency and its emission wavelengths chosen- to closely match the resonant absorption peaks of the SPPs found in the particular embodiment. The pressure gradient (from 1 up to 10 atmospheres) across the ULM generator insures that a sufficient flux of protons or deuterons is passing through the generator's working surface 20. Finally, the outermost walls of the container 44, completing enclosing the ULM generator unit (except for openings necessary for piping, sensors, and electrical connections), can be either solid-state thermoelectric/thermionic modules, or alternatively a material/subsystem that has an extremely high thermal conductivity such as copper, aluminum, Dylyn diamond coating, PocoFoam, or specially engineered heat pipes. In the case of the alternative embodiment having a ULM generator integrated with thermoelectric/thermionic devices, high quality DC power is generated directly from the ULM generator's excess heat; it serves as a fully integrated power generation system. In the other case where the container is surrounded by some type of thermal transfer components/materials/subsystems, the ULM generator functions as an LENR heat source that can be integrated as the "hot side" with a variety of different energy conversion technologies such as small steam engines (which can either run an electrical generator or rotate a driveshaft) and Stirling engines.
[0050] Figure 6 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention. It shows a subsystem 46 containing a ULM generator heat source (such as illustrated in Fig. 5) combined with a thermal transfer subsystem 48 that transfers heat to a steam engine 50 that converts heat into rotational motion that can either be used turn a driveshaft or an AC electrical generator. Overall operation of the ULM-based integrated power generation system is monitored and controlled by another subsystem 52 comprised of sensors, actuators, and microprocessors linked by communications pathways 54. [0051] Figure 7 is a representative schematic block diagram of another alternative preferred embodiment of a ULMN power generation system according to aspects of the present invention. It shows a subsystem 46 containing a ULM generator heat source combined with a thermal transfer subsystem 48 that transfers heat to a Stirling engine 56 that converts heat into rotational motion that can either be used turn a driveshaft or an AC electrical generator. Overall operation of the ULM-based integrated power generation system is monitored and controlled by another subsystem 52 comprised of sensors, actuators, and microprocessors linked by communications pathways 54. Methods of Operation
[0052] In the case of a metallic substrate 12 that forms a bulk hydride, the first step in the operation of the Invention is to deliberately "load" 90 - 99% pure hydrogen or deuterium into a selected hydride-forming metallic substrate 12 such as palladium, nickel, or titanium. Examples of alternative preferred methods for such loading (some can be combined) include a: 1. Pressure gradient; 2. Enforced difference in chemical potential; and/or 3. Imposition of electrochemical potential across the working surface.
[0053] When a metallic hydride substrate 12 is "fully loaded" (that is, the ratio of H or D to metal lattice atoms in the metallic hydride substrate reaches a preferred value of 0.80 or larger), protons or deuterons begin to "leak out" and naturally form densely covered areas in the form of "patches" 10 or "puddles" of positive charge on the working surface 20 of the metallic hydride substrate 12. The appearance of these surface patches of protons or deuterons can be seen clearly in thermal neutron scattering data. These surface patches 10 of protons or deuterons have dimensions that are preferably from one to ten microns in diameter and are scattered randomly across the working surface 20. Importantly, when these surface patches 10 form, the protons or deuterons that comprise them spontaneously begin to oscillate together, collectively, in unison.
[0054] The Born-Oppenheimer approximation will automatically break down in local regions of the working surface 20 that are in close proximity to surface patches 10 of collectively oscillating protons or deuterons. At this point, the collective motions of the electrons comprising the surface plasmon polaritons 14 become loosely coupled to the collective oscillations of local surface "patches" 10 of protons or deuterons. Energy can now be transferred back-and-forth between the surface patches 10 of protons or deuterons and the entire "sea" of SPPs covering the working surface 20.
[0055] Electromagnetic coupling between SPP electrons 14 and collectively oscillating patches of protons or deuterons dramatically increases strength of electric fields in the vicinity of the patches 10. As the local electric field strength of a patch increases, per the theory of Quantum Electrodynamics, the masses of local SPP electrons 14 exposed to the very high fields (preferably > 10π Volts/meter) are renormalized upward (their real mass is increased). Such field strengths are essentially equivalent to those normally experienced by inner-shell electrons in typical atoms. Thus, in practicing the present invention, heavy electrons, e*- are created in the immediate vicinity of the patches 10 in and around the working surface 20. SPP electrons 14 in and around the patches can be heavy, those located away from the patches are not.
[0056] Beyond the initial loading phase to form a fully-loaded hydride substrate 12, electric fields in the vicinity of the H or D patches 10 must be further increased by injecting additional energy into the "sea" of surface plasmon polaritons 14. Ultimately, this has the effect of further increasing the rate of ultra low momentum neutron, ULMN production. This can be accomplished by using one or more the following preferred methods (some can be combined):
[0057] 1. Creating a nonequilibrium flux of protons or deuterons as ions across the working surface interface 20 defined by the surface of the metallic hydride substrate (this is a rigid requirement in the case of a metallic substrate 12 that forms bulk hydrides); and/or, [0058] 2. Optionally, irradiating the metallic substrate's working surface 20 with laser 40 radiation of the appropriate wavelength that is matched to the photon absorption resonance peaks of the SPPs 14; this also has related surface roughness requirement to insure momentum coupling with the laser photons; and/or,
[0059] 3. Optionally, irradiating the metallic substrate's 12 working surface 20 with an appropriately intense beam of either energetic electrons or other preferred types of energetic positive ions besides protons or deuterons.
[0060] When the renormalized masses of local SPP heavy electrons 14 reach critical threshold values, as described in the included Widom and Larsen papers referenced above, they will react spontaneously with collectively oscillating protons or deuterons in adjacent patches 10 in a weak interaction, thus producing ultra low momentum neutrons, ULMNs and neutrinos. As stated earlier, the two types of weak interaction nuclear reactions between protons or deuterons and heavy electrons that produce ULM neutrons and neutrinos are as follows: p+ + e*" = nuim + neutrino d+ + e*" = 2nuim + neutrino
[0061] It must be emphasized that the strength of electric fields just above the patches is crucial to the production of ULM neutrons. If the local electric fields are not high enough (e.g., « 1011 V/m) critical field strength thresholds will not be reached and the SPP electrons 14 will be short of the minimum mass necessary to react spontaneously with protons or deuterons to form ULM neutrons. It is well known in nanotechnology and the semiconductor industry that micron- and nano-scale surface features/topology and the size/geometry/placement of nanoparticles on surfaces can have dramatic effects on local E-M fields. The size regime for such effects starts at tens of microns and extends down to the nanoscale at roughly 5 nanometers. For example, it is known in nanotechnology that the relative size, composition, geometry, and relative placement (positioned to touch each other in a straight line versus a more close-packed arrangement) of nanoparticles on surfaces can cause the local electric fields to vary by 105. That factor is easily the difference between reaching the necessary thresholds to create ULM neutrons or not. The implication of these facts is that to successfully produce substantial percentages of good working ULMN neutron generator devices and operate them for significant periods of time, techniques must be used that are capable of nanoscale control of initial fabrication steps and materials/designs/methods must be selected that can maintain key surface properties during extended device operation. In that regard, ULM generators with an upper working region 16 that is filled with hydrogen or deuterium gas are more tractable from a surface stability standpoint, as compared to electrolytic ULM generators using an aqueous electrolyte in which the nanoscale surface features of the cathodes typically change dramatically over time. [0062] Figures 3 and 4 illustrate a ULM generator in which nanoparticles 22 are fabricated and affixed to its working surface 20. Figure 3 is a representative side view, not drawn to scale; Figure 4 is a representative top view, also not drawn to scale. According to this particular embodiment, a ULM neutron generator would be constructed with a metallic substrate 12 that forms hydrides or deuterides, such as palladium, titanium, or nickel, or alloys thereof. Above that substrate is a working surface 20 capable of supporting surface plasmon polaritons 14 and the attachment of selected nanoparticles 22. The thickness of the substrate 12 and the diameter of the surface nanoparticles 22 should be fabricated so that they do not exceed the skin depth of the SPPs 14. The substrate 12 is fully loaded with H or D and the working surface 20 has an adequate coverage of patches 10 of protons or deuterons. In this embodiment the surface nanoparticles 22 serve as preferred target materials for ULM neutron absorption during operation of the generator. One example of a preferred nanoparticle target material for ULMN power generation applications are a variety of palladium-lithium alloys.
[0063] Palladium-lithium alloys represent an example of a preferable nanoparticle target material because: (a.) certain lithium isotopes have intrinsically high cross-sections for neutron absorption; (b.) nanoparticles composed of palladium-lithium alloys adhere well to palladium substrates; (c.) palladium-lithium alloys readily form hydrides, store large amounts of hydrogen or deuterium, and load easily; and finally (d.) there is a reasonably small, neutron-catalyzed LENR reaction network starting with Lithium-6 that produces substantial amounts of energy and forms a natural nuclear reaction cycle. Specifically, this works as follows (the graphic is excerpted from the referenced Widom-Larsen paper that published in The European Physical Journal C - Particles and Fields):
|Li -h rz. — J- 3LΪ ,
Figure imgf000028_0001
The chain (30) yields a quite large heat Q for the net nuclear reaction
Q{ 6 3U + In → 2 |He + e~ + ue) « 26.9 MeV . (31)
Having produced 4He products, further neutrons may be employed to build heavy helium "halo nuclei" yielding
Figure imgf000028_0002
2He + n -» ^He ,
Figure imgf000028_0003
The chain (32) yields a moderate heat for the net |Li producing reaction
Q{|He + 2n → ^Li + e- + Pe) « 2.95 MeV. (33)
The reactions (30) and (32) taken together form a nuclear reaction cycle. Other possibilities include the direct lithium reaction
The net amount of energy (Q) released in the above LENR network compares favorably with that of strong interaction fusion reactions, yet it does not result in the production of energetic neutrons, hard radiation, or long-lived radioactive isotopes. Thus, substantial amounts of heat energy can be released safely by guiding the course of complex LENR nucleosynthetic and decay processes.
[0064] Figure 8 is a representative sketch useful in understanding some of the scientific principles that are involved in various aspects of the present invention. As can be seen in Fig. 8, heavy electrons are produced in very high local collectively oscillating patches of protons or deuterons. These heavy electrons combine with the protons or deuterons to form the desired neutrons. These ULM neutrons, having extremely large cross sections of absorption, are quickly absorbed by the materials or targets in or upon the metallic substrate. As isotopes are produced, neutrinos and other reaction products are produced. Commercial Utility of the Invention
[0065] There are important commercial uses for low cost, compact sources of high fluxes of ULMNs produced according to the present invention. ULMN production within such devices according to the teachings of the invention, in conjunction with methods for selection/fabrication of appropriate seed materials (nuclei/isotopes) and utilization of related LENR pathways, enables:
[0066] (a) High volume manufacturing of compact devices that can sustain in situ operation of ULMN-catalyzed networks of LENRs. Devices taught by the invention can be designed to exploit differences between the aggregate nuclear binding energies of preferred initial seed materials and the final products (isotopes) of the reaction networks to create an overall net release of energy, primarily in the form of excess heat. This heat would be generated primarily by preferred weak interactions such as beta decays. When integrated with a variety of preferred energy conversion technologies, LENR heat source devices enabled by the invention could prove to be valuable in a variety of commercial applications. The invention may have a substantial commercial advantage in comparison to competing nuclear power generation technologies (fission and fusion) that rely primarily on the strong interaction. In commercial power generation systems based on the Invention, disposal of hazardous waste products, radiation shielding, and related environmental and biosafety problems will not be significant concerns. The absence of any requirement for heavy shielding on the invention's LENR ULM neutron generator systems further enables the possibility of developing revolutionary low cost, very compact, long-lived, battery-like portable power sources; and [0067] (b) Transmutation of various types of preferred seed materials/isotopes to produce significant recoverable quantities of specific, commercially useful isotopes. [0068] Further modifications and changes will become apparent to persons skilled in the art after consideration of this description and drawings. The scope of the invention is preferred to be defined by the appended claims and equivalents thereof.
Ultra Low Momentum Neutron Catalyzed Nuclear Reactions on Metallic Hydride Surfaces
A. Widom Physics Department, Northeastern University, 110 Forsyth Street, Boston MA 02115
L. Larsen Lattice Energy LLC, 175 North Harbor Drive, Chicago IL 60601
Ultra low momentum neutron catalyzed nuclear reactions in metallic hydride system surfaces are discussed. Weak interaction catalysis initially occurs when neutrons (along with neutrinos) are produced from the protons which capture "heavy" electrons. Surface electron masses are shifted upwards by localized condensed matter electromagnetic fields. Condensed matter quantum electro-
O dynamic processes may also shift the densities of final states allowing an appreciable production O of extremely low momentum neutrons which are thereby efficiently absorbed by nearby nuclei. No Coulomb barriers exist for the weak interaction neutron production or other resulting catalytic processes.
S1 PACS numbers: 24.60.-k, 23.20.Nx
QμAv — duAμ
= 0, then the average add a previously
. (5) "dress" an electron in a with an additional must be apcan in princicollidappears electrodynamics [S]. The photon propagators atom can decay into a growth obeys a thresh¬
(6)
Figure imgf000031_0001
via elecwhich holds true by a large margin for the rαuon but is tromagnetic field fluctuations on metallic hydride surcertainly not true for the vacuum mass of the electron. faces and the resulting neutron production are the main On the other hand, the electron mass in condensed matsubject matters of this work. The surface states of metalter can be modified by local electromagnetic field fluctulic hydrides are of central importance: (i) Collective surations. To see what is involved, one may employ a quasi- face plasmafl 1] modes are involved in the condensed matclassical argument wherein the electron four momentum ter weak interaction density of final states. The radiation frequencies of such modes range from the infrared to the the local electronic mass enhancement factor Eq. (6) is soft X-ray spectra, (ii) The breakdown[12] of the convengiven by tional Born-Oppenheimer approximation for the surface hydrogen atoms contributes to the large magnitude of electromagnetic fluctuations. Some comments regarding nuclear transmutation reactions which result from ultra 1+(iέ;) /-.*-e->SJ • (13) low momentum neutron production will conclude our disThe frequency scale Ω of the electric field oscillations may cussion of neutron catalyzed reactions. be defined via
ELECTROMAGNETIC FIELD FLUCTUATIONS , (14)
Figure imgf000032_0001
so that
The rigorous definition of electron mass growth due to the metallic hydride electromagnetic fields depends M.<Si on the non-local "self" mass M. in the electron Green's β(τ) = I + M^ wherein S = (15) function[13] G, i.e. which is an obviously gauge invariant result. When an
- irdμG(x, y) + | y ' M{x, z)G{z, y)diz = δ{x - y), electron wanders into a proton to produce a neutron and a neutrino, the electric fields forcing oscillations of the M(x, y) = Meδ(x - y) + -∑(x, y), (7) electrons are largely due to the protons themselves. Con¬
C siderable experimental information about the proton oswherein the non-local mass shift operator Σ depends on cillations in metallic hydride systems is available from the difference between the photon propagator neutron beams scattering off protons.
Dμv{x, y) = j- {Aμ{x)Aμ{y))+ (8) PROTON OSCILLATIONS in the presence of condensed matter and the photon propagator DμJ(x, y) in the vacuum. In Eq. (8), "+" denotes A neutron scattering from N protons in metallic hytime ordering. The source of the differences in the photon dride systems probes the quantum oscillations of protons propagators as described by the correlation function [14]
Dμv(x,y) - £ . (16) J J Dμ°] (x, x>)Vx (x
Figure imgf000032_0002
1, y')D^ (∑/, y)dix'diy' (9)
Here, Rfc(i) is the position of the kth proton at time is the polarization response function Vσλ(x, y) arising t. The differential extinction coefficient for a neutron to from condensed matter currents scatter from the metallic hydride with momentum transfer TiQ = Pi — P/ and energy transfer Tiω = ej — e/ is
Vμv(χ, y) = ^ (Jμ(χ)Jv(y))+ . (10) given by
The gauge invariant currents in Eq.(lO) give rise to the d2h ~ E dσ
G(Q, ω), (17) electromagnetic fluctuations which only at first sight apdΩfdef % [(KIf pear not to be gauge invariant. The average of the wherein p is the mean number of protons per unit volfield fluctuations appearing in Eq. (6) is in reality what ume and dσ is the elastic differential cross section for a is obtained after subtracting the vacuum field fluctuaneutron to scatter off a single proton into a final solid tions which partially induce the physical vacuum electron angle dΩ,f. mass; i.e. While the weak interaction neutron production may
AP(x)Aμ(x) = (A»(x)Aμ(x)) - (A»(x)Aμ(x))vac , occur for a number of metallic hydrides, palladium hydrides are particularly well studied. For a highly loaded +-AHx)A11(X) = D*μ(x, x) - DM»μ(x, x). (11) hydride, there will be a full proton layer on the hydride surface. The frequency scale Ω of oscillating surface pro¬
In terms of the spectral function £(r, ω) defined by the tons may be computed on the basis of neutron scattering electric field anti-commutator data[15, 16]. The electric field scale in Eq.(15) may be estimated by
2 J 5EE(r, ω) cos(u>t)dω = {E(r, i); E(r, 0)}, (12) £ w L4χ 1Q11 volts/meter (Hydrogen Monolayer). (18) The magnitude of the electric field impressed on the eleccapture yields two ultra low momentum neutrons, the tronic system due to the collective proton layer oscillanuclear catalytic reactions are somewhat more efficient tions on the surface of the palladium may be estimated for the case of deuterium, (iii) However, one seeks to by have either nearly pure proton or nearly pure deuterium systems since only the isotopically pure systems will eas¬
F= Φ! ily support the required coherent collective oscillations,
(Hydrogen Monolayer). (19) (iv) An enforced chemical potential difference or pres¬
3o3 sure difference across a palladium surface will pack the where u is the displacement of the collective proton ossurface layer to a single compact layer allowing for the recillations and the Bohr radius is given by quired coherent electric field producing motions, (v) The proton electric field producing oscillations can be amplia — ■ 0.5292 x 10~8 cm. (20) fied by inducing an enhancement in the weakly coupled e2Me electronic surface plasma modes. Thus, appropriate frequencies of laser light incident on a palladium surface
Thus launching surface plasma waves can enhance the production of catalytic neutrons, (vi) The captured electron
|E|2 w 6.86 x 10u (volts/meter) \ i-^ (21) is removed from the collective surface plasma oscillation creating a large density of final states for the weak inter¬
One may again appeal to neutron scattering from protons actions. Most of the heat of reaction is to be found in in palladium for the room temperature estimate these surface electronic modes, (vii) The neutrons themselves are produced at very low momenta, or equivalently, with very long wavelengths. Such neutrons exhibit very W 4.2 (Hydrogen Monolayer). (22) large absorption cross sections which are inversely pro
Figure imgf000033_0001
portional to neutron velocity. Very few of such neutrons will escape the immediate vicinity. These will rarely be
Prom Eqs.(15), (18), (21) and (22) follows the electron experimentally detected. In this regard, ultra low momass enhancement mentum neutrons may produce "neutron rich" nuclei in
/3 ∞ 20.6 (Palladium Hydride Surface). (23) substantial quantities. These neutrons can yield interesting reaction sequences[17]. Other examples are discussed
The threshold criteria derived from Eq. (6) is satisfied. below in the concluding section. On palladium, surface protons can capture a heavy electron producing an ultra low momentum neutron plus a neutrino; i.e. LOW ENERGY NUCLEAR REACTIONS
(e~p+) ≡ H - ■ n + ve (24) The production of ultra low momentum neutrons can induce chains of nuclear reactions in neighboring con¬
Several comments are worthy of note: (i) The collective densed matter [18, 19]. For example, let us suppose an iniproton motions for a completed hydrogen monolayer on tial concentration of lithium very near a suitable metallic the Palladium surface require a loose coupling between hydride surface employed to impose a substantial chemielectronic surface plasma modes and the proton oscillacal potential difference across the hydride surface. In that tion modes. The often assumed Born Oppenheimer apcase, the existence of weak interaction produced surface proximation is thereby violated. This is in fact the usual neutrons allow for the following chain of reactions situation for surface electronic states as has been recently discussed. It is not possible for electrons to follow the %Li + n → I∑i , nuclear vibrations on surfaces very well since the surface
Figure imgf000033_0002
+ n → 3Li , geometry precludes the usual very short Coulomb screen+ e~ + t>e , ing lengths, (ii) The above arguments can be extended to heavy hydrogen (e~p+n) ≡ (e~d+) ≡ D wherein the
Figure imgf000033_0003
→ + %He. (26) neutron producing heavy electron capture has the threshThe chain Eq. (26) yields a quite large heat Q of the net old electron mass enhancement nuclear reaction
n + n + Ve) > 6.E (25) Q{ %IΛ + 2n → 2 JHe + e- + Pe} « 26.9 MeV. (27)
Having produced ^He products, further neutrons may be
Eq. (25) also holds true. The value of β in Eq. (23) is simemployed to build heavy helium "halo nuclei" yielding ilar in magnitude for both the proton and the deuterium oscillation cases at hand. Since each deuterium electron lffe + i IHe ,
Figure imgf000034_0001
Theory of Interscience, 17, 48 (1935). 9 (1937). L.M. Led- Phys. Rev. G. Rev. C63, Theory of Press, Oxford Pitaevskii, Butter- the above reactions depend on the original production 107 (2001). Rev. 110, 130 (1960). and Academy of and neutrinos via the capture by protons of heavy Theory of Thermal NeuNew York (1996). Udovic, J.J. Rush, W. and D.Richter J. to the effective mass. There is no Coulomb barrier and I. Morrison, struction to the resulting neutron catalyzed nuclear Jap. J. Appl. Phys. Chemistry and Physics Raton (2000). Table of Radioactive (1999).
be
Figure imgf000034_0002
detected.
Absorption of Nuclear Gamma Radiation by Heavy Electrons on Metallic Hydride Surfaces
A. Widom Physics Department, Northeastern University, 110 Forsyth Street, Boston MA 02115
L. Larsen Lattice Energy LLC, 175 North Harbor Drive, Chicago IL 60601
Low energy nuclear reactions in the neighborhood of metallic hydride surfaces may be induced by ultra-low momentum neutrons. Heavy electrons are absorbed by protons or deuterons producing ultra low momentum neutrons and neutrinos. The required electron mass renormalization is provided by the interaction between surface electron plasma oscillations and surface proton oscillations. The resulting neutron catalyzed low energy nuclear reactions emit copious prompt gamma radiation.
O O The heavy electrons which induce the initially produced neutrons also strongly absorb the prompt <N nuclear gamma radiation, re-emitting soft photons. Nuclear hard photon radiation away from the metallic hydride surfaces is thereby strongly suppressed.
Cu CD PACS numbers: 24.60.-k, 23.20.Nx
OQ
O I. INTRODUCTION trons: The hard photon scatters off a very slowly moving conduction electron giving up a finite fraction of its en¬
Low energy nuclear reactions (LENR) may take place ergy to this electron.
> in the neighborhood of metallic hydride surfaces[l, 2]. The combined action of surface electron density plasma 7 + ei → y' + ef (2) oscillations and surface proton oscillations allow for the production of heavy mass renormalized electrons. A The final photon j1 is nonetheless fairly hard. heavy electron, here denoted by er , may produce ultras- (3) Creation of electron-positron pairs: The hard gamma low momentum neutrons via the reaction [3] photon creates an electron-positron pair. Kinematics disallows this one photon process in the vacuum. Pair pro¬
' +p+ → n + ve. (1) duction can take place in a metal wherein other charged particles can recoil during the pair production process.
Once the ultra low momentum neutrons are created, Roughly, the resulting mean free paths of hard prompt other more complex low energy nuclear reactions may gamma photons is of the order of centimeters when all of be catalyzed [4]. Typically, neutron catalyzed nuclear rethe above above mechanisms are taken into account. actions release energy in large part by the emission of Let us now consider the situation in the presence of prompt hard gamma radiation. However, the copious heavy electrons. The processes are as follows: gamma radiation and neutrons have not been observed (1) The absence of a heavy electron photoelectric effect: away from the metallic hydride surface. Our purpose is The surface heavy electrons are all conduction electrons. to theoretically explain this experimental state of affairs. They do not occupy bound core states since the energy is In particular, we wish to explore the theoretical reasons much too high. Thus, there should be no heavy electron why copious prompt hard gamma radiation has not been photoelectric effect. There will be an anomalously high
Figure imgf000035_0001
observed for LENR on metallic hydride surfaces. The surface electrical conductivity due to these heavy conexperimental fact that a known product particle is not duction electrons. This anomaly occurs as the threshold observed far from the metallic hydride surface is related proton (or deuteron) density for neutron catalyzed LENR to the fact that the mean free path of the product paris approached. ticle to be converted to other particles is short. As an (2) Compton scattering from heavy conduction electrons: example of such arguments, we review in Sec. II, why the When the hard gamma photon is scattered from a heavy mean free path of an ultra low momentum neutron is so electron, the final state of the radiation field consists of short. A short mean free path implies that the product very many very soft photons; i.e. the Compton Eq.(2) is particle never appears very far from the surface in which replaced by it was first created.
For hard gamma radiation, the mean free path compuy + si ∑Υs°ft + er (3) tation in metals is well known [5, 6]. For normal metals, there exists three processes determining prompt gamma It is the final state soft radiation, shed from the mass photon mean, free path. The processes are as follows: renormalized electrons, that is a signature for the heavy
(1) The photoelectric effect: The hard photon blasts a electron Compton scattering. bound core electron out of the atom. (3) Creation of heavy electron-hole pairs: In order to
(2) Compton scattering from normal conduction elecachieve heavy electron pair energies of several MeV, it is not required to reach way down into the vacuum Dirac quantum electrodynamic coupling strength is electron sea[7]. The energy differences between electron states in the heavy electron conduction states is suffiezRυaι a = cient to pick up the "particle-hole" energies of the order 4πa %c 137.036 (6) of MeV. Such particle-hole pair production in conducThe number density of heavy electrons on a metallic hytion states of metals is in conventional condensed matter dride surface is of the order of the number density of surphysics described by electrical conductivity. face hydrogen atoms when there is a proton or deuteron
In Sec. Ill, the theory of electromagnetic propagation flux moving through the surface and LENR are being in metals is explored. We show that an optical photon neutron catalyzed. These added heavy electrons prowithin a metal has a very short mean free path for abduce an anomalously high surface electrical conductivsorption. The short mean free path makes metals opaque ity at the LENR threshold. Roughly, ή2/3 ~ 1015/cm2, to optical photons. The effect can be understood on the ϊ ~ 10~6 cm so that the mean free path of a hard prompt basis of the Bohr energy rule gamma ray is L7 ~ 3.4 x 10~8 cm. Thus, prompt hard gamma photons get absorbed within less than a nanome¬
AE = fih). (4) ter from the place wherein they were first created. The energy spread of the excited particle hole pair will have
For optical frequencies, hω is of the order of a few eleca cutoff of about 10 MeV based on the mass renormal- tron volts and typical particle-hole pair creation energies ization of the original electron. The excited heavy elecnear the Fermi surface are also of the order of a few electron hole pair will annihilate, producing very many soft tron volts. The resulting strong electronic absorption of photons based on the photon spectrum which produced optical photons is most easily described by the metallic such a mass renormalization. The dual role of the heavy electrical conductivity. For hard photons with an energy electrons is discussed in the concluding Sec. VT. In deof the order of a few MeV, there are ordinarily no electail, the heavy electrons are absorbed by protons creating tronic particle-hole solid state excitations with an energy ultra-low momentum neutrons and neutrinos which catspread which is so very large. A normal metal is thus alyze further LENR, e.g. subsequent neutron captures ordinarily transparent to hard gamma rays. on nearby nuclei. The heavy electrons also allow for the
On the other hand, the non-equilibrium neutron catalstrong absorption of prompt hard gamma radiation proysis of LENR near metallic hydride surfaces is due to duced from LENR. heavy electrons with a renormalized mass having energy spreads of several MeV. These large energy spreads for the heavy surface electrons yield the mechanism for hard II. NEUTRON MEAN FREE PATH gamma ray absorption. This mechanism is explained in detail in Sees. IV and V. In Sec. IVA, we review the Suppose there are n neutron absorbers per unit volume reasons for which a single electron in the vacuum cannot with an absorption cross section Σ. The mean free path absorb a hard single massless photon. In Sec. IVB, we A of the neutron is then given by review the reasons why a single electron within a plain wave radiation beam can absorb a hard single massless A -i v 4πfi.n . . 4πhnb
A — ri∑ = Qm JF(O) = (7) photon. The proof requires the well established exact P P solutions of the Dirac wave functions in a plane wave rawhere p is the neutron momentum and .F(O) is the fordiation field[8] and contains also the proof of the induced ward scattering amplitude. The imaginary part of the electron mass renormalization in this radiation field. The scattering length is denoted by b. In terms of the ultra electrical conductivity of induced non-equilibrium heavy low momentum neutron wave length λ = (2πh/p), Eq. (7) electrons on the metallic hydride surface as seen by hard implies photons will explored in Sec. V. The energy spread of heavy electron-hole pair excitations implies that a high A = (8) conductivity near the surface can persist well into the 2nλb MeV photon energy range strongly absorbing prompt The ultra low momentum neutron is created when a gamma radiation. An absorbed hard gamma photon can heavy electron is absorbed by one of many protons parbe re-emitted as a very large number of soft photons, e.g. ticipating in a collective surface oscillation. The neutron infrared and/or X-ray. The mean free path of a hard wave length is thus comparable to the spatial size of the gamma photon estimated from physical kinetics [9] has collective oscillation, say λ ~ 10~3 cm. With (for exthe form ample) 6 ~ 10~13 cm and n ~ 1022 cm"3, one finds a
3 , 1/3 neutron mean free path of A ~ 10~6 cm. An ultra low momentum neutron is thus absorbed within about ten
Figure imgf000036_0001
nanometers from where it was first created. The likelihood that ultra low momentum neutrons will escape where n is the number of heavy electrons per unit volcapture and thermalize via phonon interactions is very ume, I is the mean free path of a heavy electron and the small. III. OPTICAL PHOTON MEAN FREE PATH If the conductivity is described in terms of elastic electron scattering from impurities or phonons, then the conduc¬
Consider an optical photon propagating within a metal tivity in a volume Ω containing conduction electrons is with conductivity σ. From Maxwell's equations described by the Kubo formula[10]
- ωfi) + δ(ω + ωfi)},
Figure imgf000037_0001
(18) it follows that wherein v/{ is a matrix element of the electron velocity operator v. If one starts from the interaction between an d V 4π electron and a photon in the form
- A } B - — curlJ = 0. (10) c2 W c v, (19)
C
Employing Ohms law in the form applies Fermi's Golden rule for photon absorption, averages over initial states and sums over final states, then the J = σE result for the frequency dependent optical photon mean
»•" = "? (§) <"> free path L(ω) is
— ϊ-÷ = — 3te{σ(ω + iθ+)} = RυaJSte{σ{ω + iθ+)}, yields the wave equation with dissipative damping L\u) c
(20) where Eq.(18) has been taken into account. Eqs.(18) and
~ ) + 4^ ( £ ) - c>Δ > B -= 0. (12) (20) are merely the microscopic version of Eq.(13) which followed directly from Maxwell's equations and Ohm's law. In thermal equilibrium , the energy differences be¬
The transition rate per unit time for the optical photon tween electron states are of the order of electron volts. As absorption is then 4πσ. This argument yields an optical the photon frequency is increased to the nuclear physics photon mean free path L given by scale of MeV, the electrical conductivity Ue{σ(ω + iθ+)} rapidly approaches zero. Thus, a metal in thermal equi¬
1 4πσ
- = — = Rvaoσ (13) librium is almost transparent to hard nuclear gamma radiation. As will be discussed in what follows, for the wherein Rυac is the vacuum impedance. In SI units, the surfaces of metallic hydrides in non-equilibrium situaoptical photon mean free path is given by tions with heavy electrons, strong absorption of nuclear gamma radiation can occur.
L = — ^- - where ^^ ≡ 29.9792458 Ohm. (14) Rvaccr 4π rv. HARD PHOTONS - HEAVY ELECTRONS
For a metal with low resistivity
Heavy electrons appear on the surface of a metallic hyσ"1 < 10~5 Ohm cm, (15) dride in non-equilibrium situations. Sufficient conditions include (i) intense LASER radiation incident on a suitthe mean free path length of an optical photon obeys ably rough metallic hydride surface, (ii) high chemical potential differences across the surface due electrolytic
L < 3 x lCr8 cm. (16) voltage gradients and (iii) high chemical potential differences across the surface due to pressure gradients. Under
An optical photon in a metal is absorbed in less than such non-equilibrium conditions, weakly coupled surface a nanometer away from the spot in which it was born. plasmon polariton oscillations and proton oscillations inThus, normal metals are opaque to visible light. duce an oscillating electromagnetic field
To see what is involved from a microscopic viewpoint, let us suppose an independent electron model in which Fμυ (x) = dμAv (x) - dvAμ (x) (21) occupation numbers are in thermal equilibrium with a felt by surface electrons. From a classical viewpoint, the Fermi distribution electrons obey the Lorentz force equation 7) d
/(£) = e(B-μ)/kBT + I (1 *2χrκ -!*-.<•>£• (22) Prom the quantum mechanical viewpoint, the electron Eq. (30) serves as the starting point for the computation wave function obeys the Dirac equation of a single hard photon absorption (with wave vector k and polarization e) by an electron in the vacuum. The = 0. (23) vanishing amplitude is computed as
Figure imgf000038_0001
The quantum motions are intimately related to the clasF(er +y → eJ- ) = ^ J Jμ i(x)Aμ(x)dix, (x)1 μψi(x)Aμ(x)d4xJ ) x
) *
Figure imgf000038_0002
^(er + γ -→ ej) = 0. (31)
S-M- (25)
Of central importance is the impossibility of satisfying
Prom the quantum mechanical biewpoint, one seeks a the four momentum conservation law pi + Uk = pf for solution to the Dirac Eq. (24) having the form fixed electron mass p2 = p2f = —m2c2 and zero photon mass, φ(x) = u(x)eiS^'n. (26) kμkμ = 0. (32)
The classical velocity field vμ (x) makes its appearance in the equation of motion for the spinor u(x); It is exactly Thus, hard photon absorption by a single electron in the vacuum is not possible.
{7" ( - iWμ + mυμ(x)) + me} u{x) = 0. (27)
Eqs.(24), (26) and (27) constitute the "unperturbed" B. Electrons and Electromagnetic Oscillations electron states in the classical electromagnetic field Fμυ describing soft radiation from a non-perturbation theory viewpoint. The hard gamma photons may thereafter be Suppose that the electron is in the field of soft radiatreated employing low order perturbation theory. Two tion. For example, the electron may be within a plane specific examples should suffice to illustrate the point. wave laser radiation beam. Further suppose an additional hard gamma photon is incident upon the electron. In this case (unlike the vacuum case) the hard photon
A. Free Electrons in the Vacuum can indeed be absorbed. For a plane wave electromagnetic oscillation of the form
A classical free electron has a Hamilton-Jacobi action Aμ sofi(x) = aμ(φ), which obeys φ = qμxμ where qμqμ = 0, dμS{x)dμS{x) + rn2c2 = 0, S{x) = xμ, σμΛsoft\x) — 1μ d i — u> (33) pμpμ = -m2c2. (28) the action function is [12]
For a classical free electron, the velocity field is uniform S(x) =PμXμ + Wp(φ). (34) in space and time; i.e.
To find the function Wp(φ), one may compute the velocdxμ pβ_ ity field dτ m xμ = (V- \ T. (29) mvμ(x) = pμ - -aμ(φ) + qμW'(φ), (35) and impose the Hamilton-Jacobi condition vμvμ = — c2.
The free particle quantum theory solutions follow from Solving this condition for Wp(φ) taking Eq. (33) into acEqs.(26), (27), (28) and (29) according to count yields
(lμPμ + mc)u(p) = 0. (30) 2(P.q)w;) = tψ.),
Figure imgf000038_0003
are also capable of absorbing prompt gamma radiation
Wp(φ) -f WJ' φ)dφ. (36)
Jo via the electrical conductivity which now extends to frequencies as high as about Uωmax ~ 10 MeV. Just as for
If Wp (φ) remaines finite during a oscillation period, then the optical photon case of Sec. Ill, we may proceed via on phase averaging Wv' — p — p. This leads to mass Maxwell's equations for the hard photon field renormalization m → m of the electron in the laser field
SF111, = dμδAu - duδAμ,
P2 + (me)2 = 0, dμδAv = 0,
(me)2 = (me)2 + (^) ^tø). (37) dμδFi" = -RυacδJI*. (41)
Importantly, the same electromagnetic oscillations which The heavy electron current response to the prompt hard increase the electron mass, also allow for the absorption photon may be written as of hard gamma photons by the surface heavy electron. The gamma ray absorption amplitude for a heavy elecRυacδJμ(x) = J IP"(z, y; A)δA1/(y)diy. (42) tron has the form[13]
Especially note that the heavy electron current response
T(I- + 7 → SJ) = ± J J%(x)Aμ(x)d4x, function II depends on the soft radiation field which renormalized the electron mass in the first place. To
T _(.e% + I → e} .) = eμ x lowest order in the quantum electrodynamic coupling in
Figure imgf000039_0001
Eq. (6), we have the independent electron model relativis- tic Kubo formula in the one loop insertion form[14]
/ e»(W1(ψ)-W/(ψ))/Rd4a.) {-i^ ( -i^&) + ≡} g(x,y, -,A) = δ{x - y), jP(e- +7 → SJ) = ∑eμK*f(n) x π""(a;, y; A) = A-πia tr {jμ9(x, y; A)ηvQ(y, x; A)} . (43) n
The equation of motion for the hard prompt gamma phoδ(βt + Αk -pf - Unq) . (38) ton is thereby
The conservation of four momentum for heavy electrons = 0, (44) II which in turn field oscillations. hard prompt the energy the
(45) unit volI. (ii) We values
path is then
estigamma
Figure imgf000039_0002
Let us now return to the heavy electron oscillations on Thus, the hard photon is absorbed at a distance of less the surface of metallic hydrides. The same heavy electhan a nanometer away from where it was first created. trons required to produce neutrons for catalyzed LENR This constitutes the central result of this work. VI. CONCLUSION heavy electrons which drastically lowers the radiation frequencies of the finally produced photons via
Our picture of LENR in non-equilibrium situations near the surface of metallic hydrides may be described βj + Jhard → ef + Y^ J30 fi. (50) in the following manner: from the weakly coupled proton and electronic surface plasmon polariton oscillations, In the range of energies ?iω7 less than the renormalthe electrons have their mass substantially renormalized ized energy of the heavy electrons, the prompt photon upward. This allows for the production of ultra low moin Eq. (50) impies a prompt hard gamma mean free path mentum neutrons and neutrinos from heavy electrons inof less than a nanometer. The metallic hydride surface teracting with protons or deuterons is thus opaque to hard photons but not to softer X-ray radiation in the KeV regime. In certain non-equilibrium e +p+ n + Ve, metallic hydride systems, surface heavy electrons play a r +d+ n + n + i/e. (49) dual role in allowing both Eqs,(49) for catalyzing LENR and Eq. (50) for absorbing the resulting hard prompt pho¬
The resulting ultra low momentum neutrons catalyze a tons. Thus, the heavy surface electrons can act as a variety of different nuclear reactions, creating complex gamma ray shield. Once the non-equilibrium conditions nuclear reaction networks and related transmutations creating heavy electrons cease, ultra low momentum neuover time. The prompt hard gamma radiation which tron production and gamma absorption both stop very accompanies the neutron absorption is absorbed by the rapidly.
[1] Y. Iwainura, M.Sakano and T. Itoh, Jap. J. Appl. Phys. Quantum Electrodynamics, Butterworth Heinmann, Sec.
41, 4642 (2002). 41, Oxford (1997). [2] S. Focardi, V. Gabbani, V. Montalbano, F. Piantelli and [9] E.M. Lifehitz and L.P. Pitaevskii, Physical Kinetics, But¬
S. Veronesi, Il Nuoυo Ciemento HlA, 1233 (1998). terworth Heinmaim, Chapt. IX, Oxford (1995). [3] R.E. Marshak, Riazuddin and CP. Ryan, Theory of [10] R. Kubo, J. Phys. Soc. Japan 12, 570 (1957).
Weak Interaction of Elementary Particles, Interscience, [11] L.D. Landau and E.M. Lifshitz, The Classical Theory of
New York (1969). Fields, Sec.17, Pergamon Press, Oxford (1975).
[4] A. Widom and L. Larsen, cond-mat/0505026 (2005). [12] L.D. Landau and E.M. Lifshitz, op. cit, Sec.42 Prob. 2. [5] W. Heitler, The Quantum Theory of Radiation, Chapt. [13] V.B. Berestetskii. E.M. Lifshitz and L.P. Pitaevskii, op.
VII, Oxford University Press, Oxford (1953). cit, Sec.101. [6] J. Bartels, D. Haidt and A. Zichichi, Eur. J. Phys. C [14] J. Schwinger, Proceedings of the National Academy of
16, 168-170, (2000). Sciences 37, 452 (1951). [7] P.A.M. Dirac, Rapport du 7e Conseil Solvay de Physique, [15] J.M. Ziman, Theory of Solids, Sec. 7.2, Cambridge Uni¬
Structure et Proprietes des Noyaux Atomiques , p. 203 versity Press, Cambridge, (1995).
(1934). [8] V.B. Berestetskii. E.M. Lifehitz and L.P. Pitaevskii,

Claims

Claims
1. A neutron production method in a condensed matter system at moderate temperatures and pressures comprising: providing collectively oscillating protons; providing collectively oscillating heavy electrons; and providing a local electric field greater than approximately 10 l volts/meter.
2. The method of claim 1 wherein said providing collectively oscillating protons comprises providing a metallic substrate and fully loading at least the upper portion thereof with hydrogen or deuterium.
3. The method of claim 1 wherein the Born-Oppenheimer approximation breaks down on a working surface of a substrate.
4. A method of producing neutrons comprising the steps of: providing a hydride or deuteride on a metallic surface; developing a surface layer of protons or deuterons on said hydride or deuteride; developing patches of collectively oscillating protons or deuterons near or at said surface layer; and exciting surface plasmons on said metallic surface.
5. The method of claim 4 further comprising providing target materials on said metallic surface.
6. The method of claim 5 wherein the target materials are nanoparticles.
7. The method of claim 6 wherein the target materials are alloys.
8. The method of claim 7 wherein the target materials are Palladium-Lithium alloy.
9. The method of claim 4 and further comprising directing a flux of protons or deuterons toward said metallic surface.
10. The method of claim 4 and including loading hydrogen or deuterium via one or more of an enforced chemical potential difference, an electrical current, and a pressure gradient.
11. The method of claim 4 further comprising directing laser light toward said metallic surface.
12. The method of claim 4 wherein the neutrons are produced with intrinsically very low energies.
13. A method of producing ultra low momentum neutrons ("ULMNs") comprising: providing a plurality of protons or deuterons on a working surface of hydride/deuteride-forming materials; breaking down the Born-Oppenheimer approximation in patches on said working surface; producing heavy electrons in the immediate vicinity of coherently oscillating patches of protons and/or deuterons; and producing said ULMNs from said heavy electrons and said protons or deuterons.
14. The method of claim 13 including forming surface plasmon polaritons.
15. A nuclear process using weak interactions comprising: forming ultra low momentum neutrons (ULMNs) from electrons and protons/deuterons using weak interactions; and locally absorbing said ULMNs to form isotopes which undergo beta-decay after said absorbing.
16. A method of generating energy comprising the steps of: at first sites, producing neutrons intrinsically having, upon their creation, ultra low momentum (ULMNs); disposing a lithium target at a second site near said first sites in a position to intercept said ULMNs; said ULMNs reacting with said Lithium target to produce Li-7 and Li-8 isotopes; said lithium isotopes decaying by emitting electrons and neutrinos to form Be-8; said Be-8 decaying to He-4; said reaction producing a net heat of reaction.
17. The method of claim 16 further comprising: producing helium isotopes by reacting helium with ULMNs emitted from said first sites to form He-5 and He-6; said He-6 decaying to Li-6 by emitting an electron and neutrino; said helium to lithium reactions yielding a heat of reaction and forming a nuclear reaction cycle.
18. A method of producing heavy electrons comprising: providing a metallic working surface capable of supporting surface plasmons and of forming a hydride or deuteride; fully loading said metallic surface with H or D thereby to provide a surface layer of protons or deuterons capable of forming coherently oscillating patches; and developing at least one patch of coherently or collectively oscillating protons or deuterons on said surface layer.
19. The method of claim 18 including breaking down the Born-Oppenheimer approximation on said upper working surface.
20. The method of claim 18 wherein said metallic surface comprises a surface of palladium or a similar metal and/or alloy capable of forming a hydride or deuteride; and providing a plurality of target nanoparticles on said metallic working surface.
21. The method of claim 20 wherein said target nanoparticles comprise a palladium-lithium alloy.
22. The method of claim 18 further comprising directing laser radiation to said working surface to stimulate and transfer energy into said surface plasmons.
23. The method of claim 18 wherein said H or D surface layer is fully loaded by one or more of an enforced chemical potential difference, an electrical current, or a pressure gradient.
24. Apparatus for a nuclear reaction comprising: a supporting material; a thermally conductive layer; an electrically conductive layer in contact with at least a portion of said thermally conductive layer; a cavity within said supporting material and thermally conductive layer; a source of hydrogen or deuterium associated with said cavity; first and second metallic hydride-forming layers within said cavity; an interface between a surface of said first hydride-forming layer, said interface being exposed to hydrogen or deuterium from said source; a first region of said cavity being located on one side of said interface and having a first pressure of said hydrogen or deuterium; a second region of said cavity being located on one side of said second hydride- forming layer and having a second pressure of said hydrogen or deuterium; said first pressure being greater than said second pressure; said apparatus forming a sea of surface plasmon polaritons and patches of collectively oscillating protons or deuterons, and ultra low momentum neutrons in a region both above and below said interface.
25. The apparatus of claim 24 wherein a Fermi-level difference between said first and second layers is greater than or equal to about 0.5eV.
26. The apparatus of claim 24 further comprising a laser positioned to irradiate said sea and said interface.
27. The apparatus of claim 24 further comprising an electrically conductive layer forming a portion of an inside wall of said cavity.
28. A neutron generator for producing ultra low momentum neutrons ("ULMNs") comprising: a metallic substrate having a working surface capable of supporting surface plasmons and of forming a hydride or deuteride, located above said substrate; said metallic substrate being fully loaded with hydrogen or deuterium; a surface layer of protons or deuterons; at least one region of collectively oscillating protons or deuterons on said surface layer; surface plasmons located above the surface layer and said region; and a flux of protons or deuterons incident on said surface plasmons, surface layer, and working surface.
29. The ULMN generator of claim 28 further comprising a plurality of target nanoparticles on said working surface.
30. The ULMN generator of claim 28 wherein the Born-Oppenheimer approximation breaks down on said upper working surface.
31. The ULMN generator of claim 28 wherein said substrate comprises palladium or a similar metal and/or alloy capable of forming a hydride or deuteride.
32. The ULMN generator of claim 28 further comprising laser radiation incident on said working surface to stimulate and transfer energy into said surface plasmons.
33. The ULMN generator of claim 29 wherein said target nanoparticles comprise a palladium-lithium alloy.
34. The ULMN generator of claim 28 wherein said H or D surface layer is fully loaded by one or more of an enforced chemical potential difference, an electrical current, or a pressure gradient.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITGE20120004A1 (en) * 2012-01-16 2013-07-17 Clean Nuclear Power Llc NUCLEAR REACTOR WORKING WITH A NUCLEAR FUEL CONTAINING ATOMES OF ELEMENTS HAVING LOW ATOMIC NUMBER AND LOW NUMBER OF MASS
EP3076396A1 (en) * 2015-04-02 2016-10-05 Mauro Schiavon Method for the producing heavy electrons
JPWO2015008859A1 (en) * 2013-07-18 2017-03-02 水素技術応用開発株式会社 Heat generating device and heat generating method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011064530A (en) * 2009-09-16 2011-03-31 Mitsubishi Heavy Ind Ltd Nuclide transformation device and nuclide transformation method
EP3803902A4 (en) * 2018-06-03 2022-06-22 Metzler, Florian System and method for phonon-mediated excitation and de-excitation of nuclear states
US11378714B2 (en) * 2020-11-13 2022-07-05 Saudi Arabian Oil Company Large depth-of-investigation pulsed neutron measurements and enhanced reservoir saturation evaluation

Family Cites Families (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL50089C (en) * 1937-01-23
US3170841A (en) * 1954-07-14 1965-02-23 Richard F Post Pyrotron thermonuclear reactor and process
US3005767A (en) * 1958-11-10 1961-10-24 Boyer Keith Rotating plasma device
US3006835A (en) * 1959-02-25 1961-10-31 Warren E Quinn Neutron source using magnetic compression of plasma
US3155592A (en) * 1960-08-19 1964-11-03 Litton Systems Inc Fusion reactor
DE1489023A1 (en) * 1964-08-12 1969-04-24 Inst Plasmaphysik Gmbh Method and arrangement for generating short neutron pulses with a high surface current density
US3546512A (en) * 1967-02-13 1970-12-08 Schlumberger Technology Corp Neutron generator including an ion source with a massive ferromagnetic probe electrode and a permanent magnet-electrode
US3756682A (en) * 1967-02-13 1973-09-04 Schlumberger Technology Corp Method for outgassing permanent magnets
US3860827A (en) * 1972-09-05 1975-01-14 Lawrence Cranberg Neutron generator target assembly
NL7312546A (en) * 1973-09-12 1975-03-14 Philips Nv EQUIPMENT, IN PARTICULAR A NEUTRONENERATOR, EQUIPPED WITH A DISMANTLE HIGH VOLTAGE CONNECTION.
US4269659A (en) * 1973-09-12 1981-05-26 Leon Goldberg Neutron generator
US4090086A (en) * 1974-03-18 1978-05-16 Tdn, Inc. Method and apparatus for generating neutrons
US3899681A (en) * 1974-04-01 1975-08-12 Us Energy Electron beam device
US3946240A (en) * 1974-04-04 1976-03-23 The United States Of America As Represented By The Secretary Of The Army Energetic electron beam assisted fusion neutron generator
US3959659A (en) * 1974-04-04 1976-05-25 The United States Of America As Represented By The Secretary Of The Army Intense, energetic electron beam assisted fusion neutron generator
US3996473A (en) * 1974-05-08 1976-12-07 Dresser Industries, Inc. Pulsed neutron generator using shunt between anode and cathode
US3892970A (en) * 1974-06-11 1975-07-01 Us Energy Relativistic electron beam device
US3968378A (en) * 1974-07-11 1976-07-06 The United States Of America As Represented By The Secretary Of The Army Electron beam driven neutron generator
US3968377A (en) * 1974-08-14 1976-07-06 Radiation Dynamics, Inc. Beam splitting to improve target life in neutron generators
US3949232A (en) * 1974-09-30 1976-04-06 Texaco Inc. High-voltage arc detector
FR2293710A1 (en) * 1974-12-06 1976-07-02 Commissariat Energie Atomique ACTIVATION ANALYSIS METHOD AND DEVICE
US3973131A (en) * 1974-12-26 1976-08-03 Texaco Inc. Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface
US4008411A (en) * 1975-07-08 1977-02-15 The United States Of America As Represented By The United States Energy Research And Development Administration Production of 14 MeV neutrons by heavy ions
US4076990A (en) * 1975-10-08 1978-02-28 The Trustees Of The University Of Pennsylvania Tube target for fusion neutron generator
US4028546A (en) * 1975-11-03 1977-06-07 Texaco Inc. Behind well casing water flow detection system
US3993910A (en) * 1975-12-02 1976-11-23 The United States Of America As Represented By The United States Energy Research & Development Administration Liquid lithium target as a high intensity, high energy neutron source
US4055686A (en) * 1976-02-20 1977-10-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method of forming metal hydride films
US4119858A (en) * 1976-08-11 1978-10-10 Lawrence Cranberg Compact long-lived neutron source
US4041309A (en) * 1976-09-02 1977-08-09 Dresser Industries, Inc. Background subtraction system for pulsed neutron logging of earth boreholes
US4092545A (en) * 1976-09-08 1978-05-30 Texaco Inc. Means and method for controlling the neutron output of a neutron generator tube
US4102185A (en) * 1976-12-09 1978-07-25 Texaco Inc. Acoustic-nuclear permeability logging system
US4136279A (en) * 1977-07-14 1979-01-23 Dresser Industries, Inc. Method and apparatus for pulsed neutron spectral analysis using spectral stripping
US4136278A (en) * 1977-07-14 1979-01-23 Dresser Industries, Inc. Method and apparatus for pulsed neutron spectral analysis using spectral stripping
US4168428A (en) * 1977-07-14 1979-09-18 Dresser Industries, Inc. Sync transmission method and apparatus for high frequency pulsed neutron spectral analysis systems
US4135087A (en) * 1977-08-31 1979-01-16 Dresser Industries, Inc. Method and apparatus for neutron induced gamma ray logging for lithology identification
US4157469A (en) * 1977-11-02 1979-06-05 Dresser Industries, Inc. Pulsed neutron well logging apparatus having means for determining background radiation
SU748926A1 (en) * 1978-01-09 1980-07-15 Предприятие П/Я В-8584 X-ray generator
DE2804393A1 (en) * 1978-02-02 1979-08-09 Christiansen Jens METHOD FOR GENERATING HIGH PULSED ION AND ELECTRON CURRENTS
NL7810299A (en) * 1978-10-13 1980-04-15 Philips Nv NEUTRON GENERATOR WITH A TREF PLATE.
US4302285A (en) * 1978-11-23 1981-11-24 Pronman Izmail M Neutron activation analysis installation
JPS55106832A (en) * 1979-02-13 1980-08-16 Nippon Denso Co Ltd Flasher unit for vehicle
US4239965A (en) * 1979-03-05 1980-12-16 Dresser Industries, Inc. Method and apparatus for neutron induced gamma ray logging for direct porosity identification
US4284886A (en) * 1979-04-11 1981-08-18 Schlumberger Technology Corporation Random pulsing of neutron source for inelastic neutron scattering gamma ray spectroscopy
US4264823A (en) * 1979-06-29 1981-04-28 Halliburton Services Well logging digital neutron generator control system
US4288696A (en) * 1979-06-29 1981-09-08 Halliburton Company Well logging neutron generator control system
US4309249A (en) * 1979-10-04 1982-01-05 The United States Of America As Represented By The United States Department Of Energy Neutron source, linear-accelerator fuel enricher and regenerator and associated methods
US4568509A (en) * 1980-10-10 1986-02-04 Cvijanovich George B Ion beam device
US4381280A (en) * 1980-10-31 1983-04-26 The United States Of America As Represented By The Secretary Of The Army Method and device for producing nuclear fusion
US4404163A (en) * 1980-12-03 1983-09-13 Halliburton Company Neutron generator tube ion source control system
US4430567A (en) * 1981-01-22 1984-02-07 Dresser Industries, Inc. Method and apparatus for neutron induced gamma ray logging for direct porosity identification
US4432929A (en) * 1981-07-17 1984-02-21 Halliburton Company Pulsed neutron generator tube power control circuit
US4446368A (en) * 1981-12-03 1984-05-01 Dresser Industries, Inc. Method and apparatus for neutron induced gamma ray well logging
US4487737A (en) * 1982-01-25 1984-12-11 Halliburton Company Pulsed neutron generator control circuit
US4996017A (en) * 1982-03-01 1991-02-26 Halliburton Logging Services Inc. Neutron generator tube
US4666651A (en) * 1982-04-08 1987-05-19 Commissariat A L'energie Atomique High energy neutron generator
US4529571A (en) * 1982-10-27 1985-07-16 The United States Of America As Represented By The United States Department Of Energy Single-ring magnetic cusp low gas pressure ion source
US4938916A (en) * 1982-12-13 1990-07-03 Ltv Aerospace And Defense Co. Flux enhancement for neutron radiography inspection device
US4596927A (en) * 1983-02-24 1986-06-24 Dresser Industries, Inc. Method and apparatus for induced gamma ray logging
US4565926A (en) * 1983-12-21 1986-01-21 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for determining the content and distribution of a thermal neutron absorbing material in an object
US4657724A (en) * 1984-04-06 1987-04-14 Halliburton Company Neutron generator ion source pulser
US4830813A (en) * 1985-06-07 1989-05-16 Ltv Aerospace & Defense Company Lightweight, low energy neutron radiography inspection device
FR2588969B1 (en) * 1985-10-18 1988-02-26 Commissariat Energie Atomique DEVICE FOR DETECTION OF EXPLOSIVE EXAMPLES
US4780266A (en) * 1986-12-22 1988-10-25 Exxon Production Research Company Method for detecting drilling fluid in the annulus of a cased wellbore
FR2630251B1 (en) * 1988-04-19 1990-08-17 Realisations Nucleaires Et HIGH-FLOW NEUTRON GENERATOR WITH LONG LIFE TARGET
US4973839A (en) * 1989-03-23 1990-11-27 Schlumberger Technology Corporation Method and apparatus for epithermal neutron decay logging
US5135704A (en) * 1990-03-02 1992-08-04 Science Research Laboratory, Inc. Radiation source utilizing a unique accelerator and apparatus for the use thereof
US5191517A (en) * 1990-08-17 1993-03-02 Schlumberger Technology Corporation Electrostatic particle accelerator having linear axial and radial fields
FR2666477A1 (en) * 1990-08-31 1992-03-06 Sodern HIGH FLOW NEUTRONIC TUBE.
US5293410A (en) * 1991-11-27 1994-03-08 Schlumberger Technology Corporation Neutron generator
US5392319A (en) * 1992-12-22 1995-02-21 Eggers & Associates, Inc. Accelerator-based neutron irradiation
US5543617A (en) * 1994-06-27 1996-08-06 Schlumberger Technology Corporation Method of measuring flow velocities using tracer techniques
US5784424A (en) * 1994-09-30 1998-07-21 The United States Of America As Represented By The United States Department Of Energy System for studying a sample of material using a heavy ion induced mass spectrometer source
WO1996024139A2 (en) * 1995-01-23 1996-08-08 Schaefer Daniel R Trapping and storage of free thermal neutrons in fullerene molecules
NO325157B1 (en) * 1995-02-09 2008-02-11 Baker Hughes Inc Device for downhole control of well tools in a production well
US5730219A (en) * 1995-02-09 1998-03-24 Baker Hughes Incorporated Production wells having permanent downhole formation evaluation sensors
US20030223528A1 (en) * 1995-06-16 2003-12-04 George Miley Electrostatic accelerated-recirculating-ion fusion neutron/proton source
US5754536A (en) * 1995-10-30 1998-05-19 Motorola, Inc. Digital speech interpolation method and apparatus
US5870447A (en) * 1996-12-30 1999-02-09 Brookhaven Science Associates Method and apparatus for generating low energy nuclear particles
US6005244A (en) * 1997-10-02 1999-12-21 Schlumberger Technology Corporation Detecting bypassed hydrocarbons in subsurface formations
DE19745669B4 (en) * 1997-10-17 2004-03-04 Bruker Daltonik Gmbh Analysis system for the non-destructive identification of the contents of objects, especially explosives and chemical warfare agents
RU2199136C2 (en) * 1998-01-23 2003-02-20 Циньхуа Юниверсити Neutron generator in sealed tube containing built-in detector of bound alpha particles for hole logging
US6438189B1 (en) * 1998-07-09 2002-08-20 Numat, Inc. Pulsed neutron elemental on-line material analyzer
US6589312B1 (en) * 1999-09-01 2003-07-08 David G. Snow Nanoparticles for hydrogen storage, transportation, and distribution
US6925137B1 (en) * 1999-10-04 2005-08-02 Leon Forman Small neutron generator using a high current electron bombardment ion source and methods of treating tumors therewith
US20010046274A1 (en) * 2000-04-28 2001-11-29 Craig Richard A. Method and apparatus for the detection of hydrogenous materials
US6907097B2 (en) * 2001-03-16 2005-06-14 The Regents Of The University Of California Cylindrical neutron generator
US7139349B2 (en) * 2001-03-16 2006-11-21 The Regents Of The University Of California Spherical neutron generator
US20020150193A1 (en) * 2001-03-16 2002-10-17 Ka-Ngo Leung Compact high flux neutron generator
US6603122B2 (en) * 2001-05-24 2003-08-05 Ut-Battelle, Llc Probe for contamination detection in recyclable materials
US20030074010A1 (en) * 2001-10-17 2003-04-17 Taleyarkhan Rusi P. Nanoscale explosive-implosive burst generators using nuclear-mechanical triggering of pretensioned liquids
US6985553B2 (en) * 2002-01-23 2006-01-10 The Regents Of The University Of California Ultra-short ion and neutron pulse production
US6922455B2 (en) * 2002-01-28 2005-07-26 Starfire Industries Management, Inc. Gas-target neutron generation and applications
US6870894B2 (en) * 2002-04-08 2005-03-22 The Regents Of The University Of California Compact neutron generator
US20090086877A1 (en) * 2004-11-01 2009-04-02 Spindletop Corporation Methods and apparatus for energy conversion using materials comprising molecular deuterium and molecular hydrogen-deuterium

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHECHIN ET AL.: 'Critical Review of Theoretical Models for Anomalous Effects in Deuterated Metals' INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS vol. 33, no. 3, 1994, pages 617 - 670, XP008123084 *
DUFOUR, J.: 'Cold fusion by sparking in hydrogen isotopes' FUSION TECHNOLOGY (USA) vol. 24, no. 2, September 1993, pages 205 - 228, XP008123082 *
'Report on the Review of Low Energy Nuclear Reactions', 01 December 2004, U.S. DEPARTMENT OF ENERGY, WASHINGTON D.C. XP008124345 *
'Tenth Int. Conference on Cold Fusion', 2003, CAMBRIDGE, MA (USA) article LETTS D. ET AL: 'Laser Stimulation Of Deuterated Palladium: Past and Present', XP008123085 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITGE20120004A1 (en) * 2012-01-16 2013-07-17 Clean Nuclear Power Llc NUCLEAR REACTOR WORKING WITH A NUCLEAR FUEL CONTAINING ATOMES OF ELEMENTS HAVING LOW ATOMIC NUMBER AND LOW NUMBER OF MASS
WO2013108159A1 (en) * 2012-01-16 2013-07-25 Clean Nuclear Power Llc Nuclear reactor consuming nuclear fuel that contains atoms of elements having a low atomic number and a low mass number
JPWO2015008859A1 (en) * 2013-07-18 2017-03-02 水素技術応用開発株式会社 Heat generating device and heat generating method
EP3023991A4 (en) * 2013-07-18 2017-03-08 Hydrogen Engineering Application& Development Company Reactant, heating device, and heating method
AU2014291181B2 (en) * 2013-07-18 2018-04-19 Clean Planet Inc. Reactant, heating device, and heating method
EP3076396A1 (en) * 2015-04-02 2016-10-05 Mauro Schiavon Method for the producing heavy electrons

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