Coulomb scattering in plasma revised

Details Coulomb scattering in plasma revised Coulomb scattering in plasma revised

2003-05-13

arxiv.org/abs/physics/0305050v1

Physics

Plasma Physics

5 pages, 2 figures

Scientific paper

A closed expression for the momentum evolution of a test particle in weakly-coupled plasma is derived, starting from quantum many particle theory. The particle scatters from charge fluctuations in the plasma rather than in a sequence of independent binary collisions. Contrary to general belief, Bohr's (rather than Bethe's) Coulomb logarithm is the relevant one in most plasma applications. A power-law tail in the distribution function is confirmed by molecular dynamics simulation.

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