Vibrational relaxation of the bending modes of D/sub 2/O, D/sub 2/S, and H/sub 2/Se gas mixtures
The method of laser-excited vibrational fluorescence has been used to measure vibrational relaxation of the bending modes ..nu../sub 2/ of H/sub 2/Se and D/sub 2/S in gas mixtures at 295 K. For H/sub 2/Se relaxed by H/sub 2/Se, H/sub 2/, D/sub 2/, He, and N/sub 2/ rates of 30 +- 2, 11 +- 1, 3.4 +- 0.2, 1.5 +- 0.1, and 1.1 +- 0.1 (all x 10/sup -13/ cm/sup 3/ molecule/sup -1/ s/sup -1/ were found). For D/sub 2/S relaxed by D/sub 2/S and by N/sub 2/, rates are 5.5 +- 0.6 and (0.12--0.37) (both x 10/sup -13/ cm/sup 2/ molecule/sup -1/ s/sup -1/). Fluorescence from HDO (..nu../sub 2/) following excitation of D/sub 2/O (..nu../sub 2/) gave a rate for vibration--vibration transfer of a bending quantum from D/sub 2/O to HDO of about (1.4 +- 0.6) x 10/sup -11/ cm/sup 3/ molecule/sup -1/ s/sup -1/. D/sub 2/O (..nu../sub 2/) is relaxed to translation and rotation at approximately the same rate by HDO as by D/sub 2/O.
- Research Organization:
- Boris Kidric Institute of Nuclear Sciences-Vinca, Department of Chemistry, 11001 Beograd, Yugoslavia
- OSTI ID:
- 6805083
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:10; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CHALCOGENIDES
COLLISIONS
DEUTERIUM
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUORESCENCE
HEAVY WATER
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
HYDROGEN SULFIDES
ISOTOPES
LIGHT NUCLEI
LUMINESCENCE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NITROGEN
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OSCILLATION MODES
OXYGEN COMPOUNDS
RELAXATION
SELENIDES
SELENIUM COMPOUNDS
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
VIBRATIONAL STATES
WATER