Temperature dependences of CH2 (a1A1) removal rates by Ar, NO and H2

P Biggs, G Hancock, Mathew R. Heal, D J McGarvey, A D Parr

Research output: Contribution to journalArticlepeer-review


Absolute rate constants for the removal of CH2 (a 1A1) by Ar, NO and H2 have been measured over the temperature range 295-431 K using laser flash kinetic absorption spectroscopy. For NO and H2, no marked temperature dependence is observed. For Ar, the rate constants increase by some 50% over this range and the results are discussed in terms of a theoretical model which relates the removal rate constants to the fractional population of CH2 (a 1A1) in states perturbed by nearby triplet levels.

Original languageEnglish
Pages (from-to)533-540
Number of pages8
JournalChemical Physics Letters
Issue number6
Publication statusPublished - 7 Jun 1991


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