Interaction of ultracold non-ideal ion–electron plasma with a uniform magnetic field

The method of molecular dynamics is used to study the behavior of an ultracold non-ideal ion–electron Be⁺ plasma in a uniform magnetic field. Our simulations yield an estimate for the rate of electron–ion collisions which is non-monotonically dependent on the magnetic field magnitude. Also they explicitly show that there are two types of diffusion: a classical one, corresponding to Brownian motion of particles, and Bohm diffusion when the trajectory of particles (guiding centers) includes substantial lengths of drift motion. (paper)