Nonthermal effects on occurrence scattering time in generalized Lorentzian distribution plasmas

Abstract

Nonthermal effects on the occurrence time advance for the elastic electron–ion collisions in generalized Lorentzian (kappa) distribution plasmas are investigated using the first-order eikonal analysis. The electron–ion interaction potential in the Lorentzian plasmas is obtained by the introduction of the plasma dielectric function (εκ). The semiclassical straight-line trajectory method is applied to the path of the projectile electron in order to obtain the eikonal phase and the scattering amplitude as functions of the impact parameter, Debye length, and spectral index (κ), and collision energy. The occurrence time advance is found to be increased with the increasing scattering angle. It is found that the occurrence time advance has the maximum value for the case of the thermal Maxwellian distribution plasmas. It is also found that the occurrence time advance decreases with the decreasing spectral index, i.e., increasing the nonthermal character of the plasma.