Quantum effects on bremsstrahlung spectrum from electron–positron plasmas

Abstract

Quantum effects on the nonrelativistic electron–positron bremsstrahlung process in electron–positron plasmas are investigated using the corrected Kelbg potential taking into account the classical effect as well as the quantum-mechanical effect. The Born approximation is assumed for the initial and final states of the collision system. The results show that the electron–positron bremsstrahlung radiation cross section decreases with increasing thermal de Broglie wavelength (λ), i.e., decreasing plasma temperature (T). It is also found that the quantum effects on the bremsstrahlung radiation cross section increase with increasing radiation photon energy.