Spin interference and nonideal effects on electron-electron collisions in nonideal plasmas

Abstract

The spin interference and nonideal effects on electron-electron collisions are investigated in nonideal plasmas. An effective pseudopotential model taking into account the screening and nonideal effects is applied to describe the electron-electron interaction potential in nonideal plasmas. The total spin states of the collision system are considered to obtain high-energy electron-electron collision cross sections. The results show that the differential collision cross section is found to decrease with increasing nonideality plasma parameter γ in the region 0<γ<2 and, however, it increases in the region 2<γ<4. It is found that the spin interference and nonideal screening effects are especially important at the scattering angle θL=π/4. It should also be noted that the differential cross sections have minima near γ=2 and the nonideal effect is found to be more significant at the minima.

First Principle Thermodynamic and Dynamic Simulations for Dense Quantum Plasmas

“…Such potentials have been derived by many authors, including Kelbg [18,19], Deutsch [20], Klakow, Toepffer and Reinhard [13] and others, e.g. [21][22][23][24][25][26]. In most cases, these potentials are derived by perturbation theory with respect to the classical coupling parameter and fail when the coupling parameter approaches one.…”

The phenomenon of runaway electrons in partially ionized non-ideal plasma

“…In tokamaks, plasma electrons run away at generation above a critical energy due to the decrease of the Coulomb collision frequency with the increase of electron energy. In this connection, it is necessary to analyze the probability of runaway electrons in a system by studying physical properties of non-ideal plasma and to do numerical simulations to investigate this problem [4,5].…”