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Register a new userInfluence of Electromagnetic Fields on Nuclear Processes
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Added by
Alfred Yiu-Fai Wong
Publication date
2020
fields
Physics
and research's language is
English
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Although the energies associated with nuclear reactions are due primarily to interactions involving nuclear forces, the rates and probabilities associated with those reactions are effectively governed by electromagnetic forces. Charges in the local environment can modulate the Coulomb barrier, and thereby change the rates of nuclear processes. Experiments are presented in which low-temperature electrons are attached to high-density rotating neutrals to form negative ions. The steady-state quiescent rotating plasma generated here lends itself to first prove the principle that low temperature systems can yield MeV fusion particles. It allows the use of high density of neutrals interacting with the wall to yield gain greater than unity. It also demonstrates that instabilities can be avoided with high neutral densities. Collective dynamic interactions within this steady-state quiescent plasma result in an arrangement of negative charges that lowers the effective Coulomb barrier to nuclear reactions at a solid wall of reactants. MeV alpha particles are synchronously observed with externally imposed pulses as evidence of fusion being enabled by Coulomb fields. Impacts on fusion, the source of energy in the universe, will be discussed.
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The dynamics of charged particles in electromagnetic fields is an essential component of understanding the most extreme environments in our Universe. In electromagnetic fields of sufficient magnitude, radiation emission dominates the particle motion and effects of nonlinear quantum electrodynamics (QED) are crucial, which triggers electron-positron pair cascades and counterintuitive particle-trapping phenomena. As a result of recent progress in laser technology, high-power lasers provide a platform to create and probe such fields in the laboratory. With new large-scale laser facilities on the horizon and the prospect of investigating these hitherto unexplored regimes, we review the basic physical processes of radiation reaction and QED in strong fields, how they are treated theoretically and in simulation, the new collective dynamics they unlock, recent experimental progress and plans, as well as possible applications for high-flux particle and radiation sources.
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