Velocity Slip in Ultra-cold Molecular Beams

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1988

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Ohio State University

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Recent experiments(1) performed in this laboratory have shown that subsillikelvin translational temperatures are accessible in a pure hellum expansion. Since the experimental apparatus is somewhat unique an overview of the apparatus will be presented along with the results of an experiment to measure the velocity slip of noble gasses mixed with hellum. If the velocity slip goes to zero in the limit of infinitive dilution then a method for testing the Wigner Threshold Laws(2) might become available.

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$^{1}$ Jue Wang, Vasgen A. Shamamian, Bruce R. Thomas, James M. Wilkinson, Joelle Riley, Clayton F. Giece, and W. Ronald Gentry, Phys. Rev. Lett. 60, 696(1988) $^{2}$ E. P. Wigner, Phys. Rev. 73. 1002(1948)
Author Institution: Chemical Dynamics Laboratory, University of Minnesota

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http://hdl.handle.net/1811/17745

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1980-1989