Evolution of Ultracold, Neutral Plasmas

Details Evolution of Ultracold, Neutral Plasmas Evolution of Ultracold, Neutral Plasmas

2001-11-17

arxiv.org/abs/physics/0111149v1

Physics

Plasma Physics

4 pages, 3 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.88.055001

We present the first large-scale simulations of an ultracold, neutral plasma, produced by photoionization of laser-cooled xenon atoms, from creation to initial expansion, using classical molecular dynamics methods with open boundary conditions. We reproduce many of the experimental findings such as the trapping efficiency of electrons with increased ion number, a minimum electron temperature achieved on approach to the photoionization threshold, and recombination into Rydberg states of anomalously-low principal quantum number. In addition, many of these effects establish themselves very early in the plasma evolution ($\sim$ ns) before present experimental observations begin.

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