Electron-atom interactions in dense semiclassical helium plasma

Abstract

The effective optical potential of the electron-atom interaction in dense semiclassical helium plasma is derived. The Hartree-Fock, polarization, and exchange potentials consider the collective screening effect and the quantum-mechanical effect of diffraction. It was shown that when three components of the optical potential act together the characteristics of electron-helium scattering change significantly in comparison with results based on their separate involvement. The influence of the quantum-mechanical effect of diffraction was also discussed.