Diffusion coefficient for electrons in magnetized ultracold plasmas

Abstract

The diffusion coefficients for electrons in an ultracold plasma in strong magnetic field were calculated for the first time by the molecular dynamics method. Earlier, we reported our results on the diffusion coefficients without magnetic field and obtained good agreement with experiment. In contrast to a convenient low-temperature plasma, strong magnetic field affects transport coefficients in an ultracold plasma event for field magnitudes 103–104 G. In the present paper a model of a system of charged particles consisting of electrons and protons interacting according to the Coulomb law without any correction of the potential at large or small distances was considered. Density of particles was varied from 1010 to 1012 cm−3; the initial temperature of the electrons was from 5 to 100 K, the temperature of the ions was from 10−3 to 2 K; induction of the magnetic field was from 0 to 5×104 G.