UV photodissociation of methyl bromide and methyl bromide cation studied by velocity map imaging - Archive ouverte HAL
Article Dans Une Revue The Journal of Chemical Physics Année : 2009

UV photodissociation of methyl bromide and methyl bromide cation studied by velocity map imaging

Résumé

We employ the velocity map imaging technique to measure kinetic energy and angular distributions of state selected CH3 (v2=0,1,2,3) and Br (2P3/2,2P1/2) photofragments produced by methyl bromide photolysis at 215.9 nm. These results show unambiguously that the Br and Br* forming channels result in different vibrational excitation of the umbrella mode of the methyl fragment. Low energy structured features appear on the images which arise from CH3Br+ photodissociation near 330 nm. The excess energy of the probe laser photon is channeled into CH3+ vibrational excitation, most probably in the nu_4 degenerate bend
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Dates et versions

hal-00354806 , version 1 (21-01-2009)

Identifiants

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Valérie Blanchet, Peter C. Samartzis, Alec M. Wodtke. UV photodissociation of methyl bromide and methyl bromide cation studied by velocity map imaging. The Journal of Chemical Physics, 2009, 130, pp.034304. ⟨10.1063/1.3058730⟩. ⟨hal-00354806⟩
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