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Collision-Induced Absorption by H2 Pairs in the Second Overtone Band at 298 and 77.5 K: Comparison between Experimental and Theoretical ResultsThe collision-induced spectra of hydrogen in the region of the second overtone at 0.8 microns have been recorded at temperatures of 298 and 77.5 K and for gas densities ranging from 100 to 800 amagats. The spectral profile defined by the absorption coefficient per squared density varies significantly with the density, so that the binary absorption coefficient has been determined by extrapolations to zero density of the measured profiles. Our extrapolated measurements and our recent ab initio quantum calculation are in relatively good agreement with one another. Taking into account the very weak absorption of the second overtone band, the agreement is, however, not as good as it has become (our) standard for strong bands.
Document ID
19990058164
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Brodbeck, C.
(Centre National de la Recherche Scientifique Orsay, France)
Bouanich, J.-P.
(Centre National de la Recherche Scientifique Orsay, France)
van-Thanh, Nguyen
(Centre National de la Recherche Scientifique Orsay, France)
Fu, Y.
(Michigan Technological Univ. Houghton, MI United States)
Borysow, A.
(Niels Bohr Inst. Copenhagen, Denmark)
Date Acquired
August 19, 2013
Publication Date
March 8, 1999
Publication Information
Publication: Journal of Chemical Physics
Publisher: American Inst. of Physics
Volume: 110
Issue: 10
ISSN: 0021-9606
Subject Category
Atomic And Molecular Physics
Funding Number(s)
CONTRACT_GRANT: NAG5-4534
Distribution Limits
Public
Copyright
Other

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