Using Three-Body Recombination to Extract Electron Temperatures of Ultracold Plasmas

Details Using Three-Body Recombination to Extract Electron Temperatures of Ultracold Plasmas Using Three-Body Recombination to Extract Electron Temperatures of Ultracold Plasmas

2007-06-18

arxiv.org/abs/0706.2672v1

Physics

Atomic Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.99.145001

Three-body recombination, an important collisional process in plasmas, increases dramatically at low electron temperatures, with an accepted scaling of T_e^-9/2. We measure three-body recombination in an ultracold neutral xenon plasma by detecting recombination-created Rydberg atoms using a microwave-ionization technique. With the accepted theory (expected to be applicable for weakly-coupled plasmas) and our measured rates we extract the plasma temperatures, which are in reasonable agreement with previous measurements early in the plasma lifetime. The resulting electron temperatures indicate that the plasma continues to cool to temperatures below 1 K.

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