Fusion reactions in plasmas as probe of the high-momentum tail of particle distributions

Details Fusion reactions in plasmas as probe of the high-momentum tail of particle distributions Fusion reactions in plasmas as probe of the high-momentum tail of particle distributions

2005-12-16

arxiv.org/abs/nucl-th/0512066v1

Eur. Phys. J. B 50 (2006) 11-15

Physics

Nuclear Physics

Nuclear Theory

9 pages in ReVTeX preprint format, 3 figures, to appear in EPJ B

Scientific paper

10.1140/epjb/e2006-00143-8

In fusion reactions, the Coulomb barrier selects particles from the high-momentum part of the distribution. Therefore, small variations of the high-momentum tail of the velocity distribution can produce strong effects on fusion rates. In plasmas several potential mechanisms exist that can produce deviations from the standard Maxwell-Boltzmann distribution. Quantum broadening of the energy-momentum dispersion relation of the plasma quasi-particles modifies the high-momentum tail and could explain the fusion-rate enhancement observed in low-energy nuclear reaction experiments.

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