Accession Number : ADA266891
Title : Electronic Spectroscopy of the Gas-Phase OH-Kr van der Waals Complex.
Descriptive Note : Final rept. Nov 91-Jan 93,
Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
Personal Author(s) : Sausa, Rosario C. ; Lemire, George W.
Report Date : JUL 1993
Pagination or Media Count : 27
Abstract : The first observation of hydroxyl-krypton (OH-Ar) vdW complexes was made by Goodman and Brus (1977) in noble gas matrices. Their investigation was concerned primarily with the understanding of hydrogen bonding. The complexes were detected by laser-induced fluorescence (LIF) near the OH A(2) sum(+) reverse transition X (2)Pi(sub i) ultraviolet system and with wavelength dispersed emission. A series of progressions were observed in the excitation spectra near the OH (2,0), (1,0), and (0,0) bands and assigned to the vdW stretching motion. The observed emissions were broad continua, red-shifted from the OH bands. Although most of their quantitative data dealt with OH-Ar and OD-Ar complexes, one progression in the OH-Kr complex was reported near the (2-0) band of OH. The bands in this OH-Kr progression were so broad that only the band positions were reported. As a result of their observations, Goodman and Brus (1977) determined that the upper electronic state of the OH and OD rare-gas complexes have significantly higher binding energies and shorter vdW bond lengths than the ground state
Descriptors : *ELECTRON SPECTROSCOPY, *ELECTRONIC STATES, *GASES, *HYDROXYL RADICALS, *KRYPTON, *PHASE, *LASER INDUCED FLUORESCENCE, HYDROGEN BONDS, ULTRAVIOLET SPECTRA, COMBUSTION, ATMOSPHERIC CHEMISTRY, RARE GASES, PHOTOLYSIS, DISPERSIONS, EMISSION, EXCITATION, CHEMICAL BONDS.
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE