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Science 16 October 1981:
Vol. 214. no. 4518, pp. 263 - 269
DOI: 10.1126/science.214.4518.263
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Articles

The Spectroscopy of Very Cold Gases

Donald H. Levy 1

1 Professor in the James Franck Institute and the Department of Chemistry, University of Chicago, Chicago, Illinois 60637

The technique of supersonic free jet spectroscopy can be used to study the structure and dynamics of molecules which have been cooled to far below their boiling points but which remain in the gas phase. Cooling of the internal degress of freedom, the molecular rotations and vibrations, produces a highly resolved and greatly simplified molecular spectrum. The principles of the technique are discussed and its utility is demonstrated by two examples. the spectroscopy of porphyrins in the gas phase and the photochemistry of van der Waals molecules.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Chemistry and Chemical Intermediates in Supersonic Free Jet Expansions.
T. A. Miller (1984)
Science 223, 545-553
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