NASA’s Lattice Confined Fusion (LCF)


  • Abstract

    Light–wave quantum electronics utilizes the oscillating carrier wave to control electronic properties with intense laser pulses. Without direct light–spin interactions, however, magnetic properties can only be indirectly affected by the light electric field, mostly at later times. A grand challenge is how to establish a universal principle for quantum control of charge and spin fluctuations, which can allow for faster-than-THz clock rates. Using quantum kinetic equations for the density matrix describing non–equilibrium states of Hubbard quasiparticles, here we show that time–periodic modulation of electronic hopping during few cycles of carrier–wave oscillations can dynamically steer an antiferromagnetic insulating state into a metalic state with transient magnetization. While nonlinearities associated with quasi-stationary Floquet states have been achieved before, magneto–electronics based on quasiparticle acceleration by time–periodic multi–cycle fields and quantum femtosecond/attosecond magnetism via strongly–coupled charge–spin quantum excitations represents an alternative way of controlling magnetic moments in sync with quantum transport.


    Light-wave control of correlated materials using quantum magnetism during time-periodic modulation of coherent transport - Communications Physics
    With no direct coupling between spin and light, transient magnetic switching typically proceeds on longer timescales and requires indirect coupling via…
    www.nature.com



    Discussion

    We have shown that light-driven itinerant electron spin and charge quantum excitations that interact strongly with an AFM local spin background can destabilize an equilibrium AFM insulating state with lattice displacements Qi ≠ 0 towards a metallic transient state with Qi ~ 0 and finite magnetization. Based on these results, we can envision in sync quantum THz tuning and coherent control of electronic and magnetic properties of quantum materials by tunable multicycle THz/MIR electric fields. For example, recent results in topological quantum materials indicate that a metastable phase with unique topological switching dynamics assisted by phonons emerges during cycles of lattice coherence oscillations, driven by a few-cycle THz electric field above threshold6,35. Also, coherent control of structural phase transitions9 has been suggested. Importantly, the ability to experimentally control coherent electronic transport on sub-cycle timescales sets the stage for attosecond magnetism2, quantum femtosecond magnetism5,52,55,57,77,78,79,80, and light-wave quantum electronics1,3,4,25,41,42 before the system reaches a steady state. Our results suggest a microscopic mechanism of quantum femtosecond/attosecond magnetism2,5,77,78 driven by the light electric field and spin quantum fluctuations. In weakly correlated magnetic systems, it has been debated whether femtosecond magnetization arises from adiabatic processes associated with electron, spin, and phonon populations, or from coherent processes associated with angular momenta interacting with photoexcited electrons55,77. Here, we propose a different mechanism, based on the strong coupling of electric quantum transport with local moment quantum fluctuations. Understanding the time evolution of a quantum state by simultaneous light-wave control of electronic, magnetic, and lattice properties prior to heating is important for THz magneto-electronics and coherent spintronics, as well for designing quantum materials properties far from equilibrium, leading, for example, to a light-induced switch that twists both spins and the crystal lattice35.


    Author information

    Affiliations

    1. Department of Physics, University of Crete, Box 2208, Heraklion, Crete, 71003, Greece

      Panagiotis C. Lingos

    2. Department of Physics, University of Alabama at Birmingham, Birmingham, AL, 35294-1170, USA

      Myron D. Kapetanakis & Ilias E. Perakis

    3. Department of Physics and Astronomy, Iowa State University and Ames Laboratory—USDOE, Ames, IA, 50011, USA

      Jigang Wang

    Contributions

    P.C.L., M.D.K., and I.E.P. developed the theory, performed the numerical calculations, and analyzed the numerical data. J.W. contributed to the analysis and interpretation of the numerical data. I.E.P. conceived, designed, and supervised the study, and wrote the paper with help from all authors.

    Corresponding author

    Correspondence to Ilias E. Perakis.


    Edited for brevity by Alan Smith.


  • Do the authors of this plastered paper (as in plastered onto many threads here) really understand what is going on or are there disagreements between individual authors? The mathematics and statistical analyses are horrendous, and fade into mumbo-jumbo that few people can understand. And this is the result of clinging dogmatically to the standard model of quantum physics.

  • Gregory Byron Goble


    Could you edit posts to a more reasonable length please. As a good journalist you should be aware of the TLDR phenomenon, 'too long didn't read' is a very human reaction.


    For example it would be better to paste in the abstract (including the author's names at the top), followed by a link to the paper and also extracts and your comments on the whole thing. I am sure that very few members are interested in knowing about the publisher's advertising affiliations or job vacancies. If you are reluctant to edit this, then perhaps I will do it for you.

  • @'Gregory Byron Goble


    Could you edit posts to a more reasonable length please. As a good journalist you should be aware of the TLDR phenomenon, 'too long didn't read' is a very human reaction.

    For example it would be better to paste in the abstract (including the author's names at the top), followed by a link to the paper

    The article posted above is apparently from Nature: Communication Physics, published on 25 March 2021 under Creative Commons. The rights and permissions include the following:

    "This is an open access article distributed under the terms of the Creative Commons CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited."

  • ....permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

    'Properly Cited' means just that. It does not mean 'paste in everything'. It means giving a clear attribution to the source of the information - like a link. This link will give the following information,, which constitutes 'a proper citation' the name of the book, article, or other resource; the name of its author; and the date it was published...

  • Properly Cited' means just that. It does not mean 'paste in everything'. It means giving a clear attribution to the source of the information - like a link.

    Yes, understood. That is why I included the link to the original article, in case the bigwigs at Nature happened to notice it missing in the original post. It's probably not an issue but they are known to occasionally be testy about such things.

  • Spotted by Carl Page.


    NASA’s New Shortcut to Fusion Power
    Lattice confinement fusion eliminates massive magnets and powerful lasers
    spectrum.ieee.org


    Paper by Larry Forsley and coleagues.


    " .....governments, universities, and companies have long looked to fusion.....


    Among those interested parties is NASA. The space agency has significant energy needs for deep-space travel, including probes and crewed missions to the moon and Mars. For more than 60 years, photovoltaic cells, fuel cells, or radioisotope thermoelectric generators (RTGs) have provided power to spacecraft. RTGs, which rely on the heat produced when nonfissile plutonium-238 decays, have demonstrated excellent longevity—both Voyager probes use such generators and remain operational nearly 45 years after their launch, for example. But these generators convert heat to electricity at roughly 7.5 percent efficiency. And modern spacecraft need more power than an RTG of reasonable size can provide.


    One promising alternative is lattice confinement fusion (LCF), a type of fusion in which the nuclear fuel is bound in a metal lattice. The confinement encourages positively charged nuclei to fuse because the high electron density of the conductive metal reduces the likelihood that two nuclei will repel each other as they get closer together.


    A row of clear vials with white plastic caps on a countertop. Each vial contains a pile of moist wipes on top of small metal chunks. The deuterated erbium (chemical symbol ErD3) is placed into thumb-size vials, as shown in this set of samples from a 20 June 2018 experiment. Here, the vials are arrayed pre-experiment, with wipes on top of the metal to keep the metal in position during the experiment. The metal has begun to crack and break apart, indicating it is fully saturated. NASAA row of upside down vials on a metal rack. The vials are amber-colored and contain metal chunks on top of chemical wipes. The vials are placed upside down to align the metal with the gamma ray beam. Gamma rays have turned the clear glass amber.NASA

    We and other scientists and engineers at NASA Glenn Research Center, in Cleveland, are investigating whether this approach could one day provide enough power to operate small robotic probes on the surface of Mars, for example. LCF would eliminate the need for fissile materials such as enriched uranium, which can be costly to obtain and difficult to handle safely. LCF promises to be less expensive, smaller, and safer than other strategies for harnessing nuclear fusion. And as the technology matures, it could also find uses here on Earth, such as for small power plants for individual buildings, which would reduce fossil-fuel dependency and increase grid resiliency.

  • We have discussed this one already, and it was featured in one of our newsletters, we usually notice these things quickly thanks to our members. :)

    I certainly Hope to see LENR helping humans to blossom, and I'm here to help it happen.

  • Shortcut to Fusion: No more magnets, no more lasers? - Anthropocene Institute


    The Anthropocene Institute has been partnering with Lawrence Forsley, the deputy principal investigator for NASA’s lattice confinement fusion project, based at NASA Glenn Research Center. He and other researchers’ work have now been highlighted in IEEE Spectrum, “NASA’s New Shortcut to Fusion Power, Lattice confinement fusion eliminates massive magnets and powerful lasers.”

    In the article, Larry and his coauthors Bayarbadrakh Baramsai, Theresa Benyo, and Bruce Steinetz explain how NASA has traditionally powered deep-space travel, including photovoltaic cells, fuel cells, and radioisotope thermoelectric generators (RTGs). Now NASA is turning its attention to lattice confinement fusion (LCF), a fusion in which hydrogen is bound in a metal lattice, encouraging positively charged nuclei to fuse. These researchers are not alone in their endeavors. Researchers at Lawrence Berkeley National Laboratory, with funding from Google Research, achieved favorable results with a similar electron-screened fusion setup.

    The authors and other scientists and engineers at NASA Glenn Research Center are investigating whether this approach can provide enough power to operate robotic probes on the surface of Mars, for instance. The good news: LCF would eliminate the need for fissile materials such as enriched uranium. The process would also be less expensive, smaller, and safer than other ways of harnessing nuclear energy.

    Most promising: LCF could also find uses here on Earth as it matures. Imagine LCF powering small power plants for individual buildings, which would reduce fossil-fuel dependency and increase grid resiliency. These researchers are making significant strides in creating a new way of generating clean nuclear energy, both for space missions and for people on Earth.

    Congratulations to Larry Forsley and others making breakthroughs on the LCF front. It’s time these new developments get the support they deserve.

  • The Anthropocene Institute has been partnering with Lawrence Forsley, the deputy principal investigator for NASA’s lattice confinement fusion project, based at NASA Glenn Research Center.

    Not sure what they mean by partnering, but interesting.

  • This came in the Anthropocene Institute Newsletter that was sent today, in case anyone wonders.

    I certainly Hope to see LENR helping humans to blossom, and I'm here to help it happen.

  • Not sure what they mean by partnering, but interesting.

    I honestly think this is all rooted in the ARPA-E LENR Workshop, I guess it has been an ongoing collaboration since then.

    I certainly Hope to see LENR helping humans to blossom, and I'm here to help it happen.

  • The most recent NASA white paper.

    https://ntrs.nasa.gov/api/citations/20210026340/downloads/White%20Paper%20regarding%20LCF%20and%20Fusion-fast-fisson.pdf


    The lattice confinement fusion is the fast neutron source for fast fission of depleted uranium or thorium. NASAs interest in this is its ability to produce compact nuclear power sources that do not need enriched uranium or plutonium. The reactors are not radioactive on takeoff.

  • If anybody is interested in this, erbium, the raw material is relatively cheap.


    https://www.ebay.co.uk/itm/394…06ca53:g:eEAAAOSwgxdiZ~F-

    Er does not absorb hydrogen to compress D2 at space between the nano metal era particle.

    This is the meaning of lattice cold fusion.

    (PDF) Cold Fusion mechanism of bond compression
    PDF | Cold fusion is caused by the compression against D2 covalent bond at the expanded tetrahedral site (T site) on the nano-roughness of the metal... | Find,…
    www.researchgate.net

  • The reactors are not radioactive on takeoff.

    They haven't taken off yet.. maybe by 2026,2030?


    "We expect to reach
    TRL 5 after three years by demonstrating scaled output with modeling and extended lifetime experiments."


    To be sure...NASA might give them a few hundred hours burn before they do..

    in which case there will be plenty of activated neutrons,and less stable actinide isotopes

    which may have gamma.beta,alpha emissions much higher than background

    .. as long as they are encased in heavy metal like the Topaz of Soviet yore

    they should be OK?

  • Er+2d=Er+4proton=Hf.

    This transmutation is inevitable but Hf is stable it is ok. No neutron from cold fusion due to it is Not via excited state of 4He.

  • transmutation of Er

    Uranium?.. Thorium?....,,

    ,the intended fuel is not just Erbium..

    Dash et al had some interesting results with deuterium plus Uranium

    https://www.researchgate.net/publication/237517673_EFFECTS_OF_GLOW_DISCHARGE_WITH_HYDROGEN_ISOTOPE_PLASMAS_ON_RADIOACTIVITY_OF_URANIUM

    Forsley et al got


    Strontium 85..92

    Xenon 125 131

    Cadmium 109 Cesium 137 etc

    WO2009108331A2 - A hybrid fusion fast fission reactor - Google Patents

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