Electron–electron collision effects on the bremsstrahlung emission in Lorentzian plasmas

Abstract

Electron–electron collision effects on the electron–ion bremsstrahlung process are investigated in Lorentzian plasmas. The effective electron–ion interaction potential is obtained by including the far-field terms caused by electron–electron collisions with an effective Debye length in Lorentzian plasmas. The bremsstrahlung radiation cross section is obtained as a function of the electron energy, photon energy, collision frequency, spectral index and Debye length using the Born approximation for the initial and final states of the projectile electron. It is shown that the non-Maxwellian character suppresses the bremsstrahlung radiation cross section. It is also shown that the electron–electron collision effect enhances the bremsstrahlung emission spectrum. In addition, the bremsstrahlung radiation cross section decreases with an increase in the plasma temperature.