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Measurement of the absolute yield of CO(a 3 Pi) + O products in the dissociative recombination of CO<sub>2</sub><sup> + </sup> ions with electrons

J. Chem. Phys. 108, 8400 (1998); doi:10.1063/1.476267

Issue Date: 22 May 1998

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Miroslaw P. Skrzypkowski, Theodosia Gougousi, and Rainer Johnsen
Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260

Michael F. Golde
Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
A flowing-afterglow technique is described for measuring the absolute yield of a radiative product state from ion–electron recombination. The technique is applied to CO<sub>2</sub><sup> + </sup> + e– dissociative recombination. The measured yield of CO(a 3 Pi) + O(3P) is 0.29 ± 0.10. This includes cascade from higher triplet states of CO. The vibrational distribution in CO(a 3 Pi,v = 0–3) is approximately Boltzmann, with an effective temperature of 4200 ± 300 K. The measured rate constant for quenching of CO(a) by CO2 is (1.0 ± 0.2) × 10–11 cm3 s – 1, somewhat lower than previous measurements. ©1998 American Institute of Physics.
History: Received 23 January 1998; accepted 20 February 1998
Permalink: http://link.aip.org/link/?JCPSA6/108/8400/1
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KEYWORDS and PACS

Keywords
PACS
  • 34.80.Lx
    Atomic and molecular collision processes and interactions Electron scattering Electronion recombination and electron attachment
  • 34.80.Ht
    Atomic and molecular collision processes and interactions Electron scattering Dissociation and dissociative attachment by electron impact
  • YEAR: 1998

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
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