  The results of a theoretical investigation of an ultracold, neutral plasma
composed of equal mass positive and negative charges are reported. In our
simulations, the plasma is created by the fast dissociation of a neutral
particle. The temperature of the plasma is controlled by the relative energy of
the dissociation. We studied the early time evolution of this system where the
initial energy was tuned so that the plasma is formed in the strongly coupled
regime. In particular, we present results on the temperature evolution and
three body recombination. In the weakly coupled regime, we studied how an
expanding plasma thermalizes and how the scattering between ions affects the
expansion. Because the expansion causes the density to drop, the velocity
distribution only evolves for a finite time with the final distribution
depending on the number of particles and initial temperature of the plasma.
