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The low-lying 2-sigma-minus states of OHThe configuration-interaction method is used to determine the electronic wave functions of the two lowest 2-sigma-minus states of OH using four different atomic orbital basis sets. Potential energy curves, transition moments, oscillator strengths, and photodissociation cross sections are obtained. Electronic transition dipole moments connecting the excited 1 2-sigma-minus and 2(D)2-sigma-minus states with each other and with the ground chi-2-pi state are presented as functions of internuclear distance. The theoretical absorption oscillator strengths for the D-2-sigma-minus(v prime = 0) from chi-2-pi(v double prime = 0) transition are in good agreement with the empirical value derived from astronomical measurement. The photodissociation cross sections for absorption from the v prime = 0, 1, and 2 levels of the ground state into the continuum of the 1 2-sigma-minus state are calculated, and the interstellar and cometary photodissociation rates are derived.
Document ID
19830047310
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Van Dishoeck, E. F.
(Leiden, Rijksuniversiteit, Sterrewacht, Leiden, Netherlands; Harvard-Smithsonian Center for Astrophysics, Cambridge MA, United States)
Langhoff, S. R.
(NASA Ames Research Center Moffet Field, CA, United States)
Dalgarno, A.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 11, 2013
Publication Date
April 1, 1983
Publication Information
Publication: Journal of Chemical Physics
Volume: 78
Subject Category
Atomic And Molecular Physics
Report/Patent Number
AFOSR-TR-83-1163
AD-A136075
Accession Number
83A28528
Funding Number(s)
CONTRACT_GRANT: AF-AFOSR-78-3677
CONTRACT_GRANT: NSG-7421
Distribution Limits
Public
Copyright
Other

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