Energy and momentum relaxation in a dense two-temperature plasma

Summary form only given. Microscopic expressions for the energy relaxation rate and the momentum relaxation rate in a dense two-temperature plasma have been obtained. These expressions are of the Kogan (1963) type, and can be derived in the lowest approximation using the Fermi golden rule, and in higher order using nonequilibrium Green function methods. The expressions contain the true electron-ion coupling constant, the electron response function, and the ion response function at their respective temperatures and densities. Calculations for the energy relaxation rate from the hot electrons to the cold ions in aluminum plasmas, in molten Si, and in molten C of the sort generated in pulsed laser experiments have been performed.