Classical Electron‐Ion Coulomb Bremsstrahlung in Weakly Coupled Plasmas

Abstract

In weakly coupled plasmas the classical electron-ion Coulomb bremsstrahlung process are investigated. The cross section for the electron-ion Coulomb bremsstrahlung in weakly-coupled plasmas is obtained by the Debye-Huckel model with the modified hyperbolic-orbit trajectory method. The results show that the plasma-screening effects on the scaled doubly differential bremsstrahlung radiation (SDDBR) cross section increase as the radiation frequency increases. For a given projectile electron energy, the SDDBR cross section obtained by the modified hyperbolic-orbit trajectory method and by the straight-line trajectory method tend to the same value with increasing radiation photon energy. The SDDBR cross sections using the modified hyperbolic-orbit trajectory method are increased by the plasma screening in the small impact parameter domain and decreased for large and intermediate impact parameters with increasing radiation frequency.