Quantum Theory of Energy Loss by Test Ions to Plasma Electrons

Abstract

Full quantum-theoretical calculations are carried out for the rate of energy loss by energetic (but nonrelativistic) test ions to Maxwellian plasma electrons. The calculations are based on the kinetic theory of Kihara and Honda. For a test ion of speed V and charge Ze, the rate is given in terms of the quantum-theoretical Coulomb logarithm and tabulated universal functions of V, Z and the electron temperature T. It is shown that the loss rate formula derived here contains all known formulae as appropriate limiting cases. Several numerical examples are discussed.