Compton Fokker-Planck Equation for Hot Plasmas

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Abstract
The Fokker-Planck equation for Compton scattering in a plasma is developed without recourse to a non-relativistic expansion. Using calculated energy exchange rates for scattering in a relativistic Maxwellian plasma, an equation is obtained which is valid for electron temperatures up to 100 keV and photon energies up to 1 MeV. Numerical comparisons are presented which show excellent agreement between Fokker-Planck and Monte Carlo calculations. Results using the nonrelativistic Fokker-Planck, valid to only 20 keV, are also presented to indicate the improvement made.

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