Landau damping effects on the low-energy bremsstrahlung process in a quantum plasma

Abstract

The Landau damping effects on the low-energy bremsstrahlung process are investigated for both the soft- and hard-photon radiations in a quantum plasma composed of electrons and holes. The impact parameter method is applied to the motion of the projectile in order to investigate the variation of the bremsstrahlung cross-section as a function of the effective Debye length, impact parameter, and radiation photon energy. The results show that the Landau damping effects significantly enhance the bremsstrahlung radiation cross-section. It is important to note that the domain of the Landau damping effects is extended with increasing the radiation photon energy. Copyright (C) EPLA, 2007.