  Electron heating in an ultracold neutral plasma is modeled using classical
molecular dynamics simulations in the presence of an externally applied
magnetic field. A sufficiently strong magnetic field is found to reduce
disorder induced heating and three body recombination heating of electrons by
constraining electron motion, and therefore heating, to the single dimension
aligned with the magnetic field. A strong and long-lasting temperature
anisotropy develops, and the overall kinetic electron temperature is
effectively reduced by a factor of three. These results suggest that
experiments may increase the effective electron coupling strength using an
applied magnetic field.
