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The dissociation dynamics of the methyl radical following excitation to the B̃ 2A′1 state

✍ Scribed by Steven H.S. Wilson; Michael N.R. Ashfold; Richard N. Dixon

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
655 KB
Volume
222
Category
Article
ISSN
0009-2614

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✦ Synopsis

The translational energy spectrum of H Rydberg atoms resulting from the photolysis of methanethiol ( CHsSH ) at 2 16 nm includes peaks which arise from the secondary photolysis of methyl radicals -one of the primary products. The measured times of flight of these secondary H atoms indicate that the partner CH2 fragments resulting from predissociation of CHs (8) radicals are formed predominantly in their ground (8 3BI ) electronic state rather than the 2 'A, excited state as previously presumed. The dynamics of this dissociation are discussed and rationalised in the light of two coupled model potential energy surfaces for CHs-+CH2+H.

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