Dynamic plasma screening effects on low-energy bremsstrahlung emission in nonideal plasmas

Abstract

The dynamic screening effects on the low-energy electron-ion bremsstrahlung process are investigated for both the soft and hard photon radiations in nonideal plasmas. The impact-parameter analysis is employed to obtain the bremsstrahlung radiation cross section as a function of the impact parameter, projectile energy, radiation photon energy, thermal energy, and Debye length. The results show that the dynamic screening effect on the bremsstrahlung radiation is found to be more significant for distant encounters. In addition, the dynamic screening effect is found to be more important for the soft photon radiation and decreases with increasing the radiation photon energy. (c) 2006 Elsevier B.V. All rights reserved.