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Quenching of two-photon-excited H(3s, 3d) and O(3p 3P2,1,0) atoms by rare gases and small molecules

✍ Scribed by J. Bittner; K. Kohse-höinghaus; U. Meier; Th. Just

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 548 KB
Volume: 143
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87068-4

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✦ Synopsis

Measurements of the quenchmg rate coefficients for hydrogen atoms in the 3s 'S and 3d *D states and of oxygen atoms in the 3p 'P state by rare gases and several combustion-relevant collision partners are presented. The excited atomic states are prepared by two-photon laser excitation. Quenching cross sections for most collision partners are found to be larger than classical collision cross sections; H atoms are mostly quenched faster than 0 atoms. For the quenching of H and 0 atoms by the rare gases, the rate coefficients increase significantly with the mass of the rare gas atom.

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