Equilibration of OH (v7; v9) in air-like gas ensembles

Turner, John (2011) Equilibration of OH (v7; v9) in air-like gas ensembles. Chemical Physics Letters, 515 (4-6). pp. 302-305. ISSN 00092614

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Abstract

The reaction H + O(3) -> OH + O(2) yields OH in v(OH) = 7-9. We report equilibration of OH v(OH) = 7 and v(OH) = 9 in baths of N(2) + O(2) in v = 0 at 300 K. Each relaxes initially by near-resonant, coupled, vibrational energy exchange with bath gas molecules, followed by further, slower, phases of energy transfer. Single (first) collision cross-sections are calculated to be 1.42; 1.51; 1.52 +/- 0.21 angstrom(2) for depopulation of v(OH) = 7; 8; 9 respectively. 'Equilibrated' OH rotation becomes the lowest of all nine possible modal temperatures in OH and the two bath gases, despite an initial sharp rise.

Item Type: Article
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science
Depositing User: John Turner
Date Deposited: 06 Feb 2012 20:46
Last Modified: 03 Oct 2012 12:20
URI: http://sro.sussex.ac.uk/id/eprint/27991
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