Abstract
A Fokker-Planck equation has been generalized to treat large-angle as well as small-angle binary collisions in plasmas. For moderately coupled plasmas [2[approx lt] Coulomb logarithm (ln[Lambda][sub [ital b]])[approx lt]10], calculations have been made of the relaxation rates and transport coefficients. In general they differ from the standard (Braginskii) results by terms of order 1/ln[Lambda][sub [ital b]]. Using a modified collision operator, a new vector potential that has a direct and practical connection to the Rosenbluth potentials is obtained. In addition, we calculate a reduced electron-ion collision operator that, for the first time, manifests the 1/ln[Lambda][sub [ital b]] corrections.
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