Primary product channels in the photodissociation of methane at 121.6 nm

Details Primary product channels in the photodissociation of methane at 121.6 nm Primary product channels in the photodissociation of methane at 121.6 nm

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jchph..98.2054m&link_type=abstract

Journal of Chemical Physics (ISSN 0021-9606), vol. 98, no. 3, p. 2054-2065.

Physics

Chemical Physics

94

Free Radicals, Hydrogen Atoms, Methane, Photochemical Reactions, Photodissociation, Atmospheric Chemistry, Ground State, Planetary Atmospheres, Titan

Scientific paper

The use of H(D)-atom photofragment translational spectroscopy to study the photodissociation of CH4(CD4) at 121.6 nm indicates that simple C-H bond fission is the dominant primary process following excitation at this wavelength. About a fourth of the resulting CH3 fragments possess so high an internal energy that they must undergo subsequent unimolecular decay; these may be predominantly CH and H2 fragments. Current models of hydrocarbon photochemistry must be reconsidered, in view of the CH3 and CH fragment yields of CH4 photodissociation at 121.6 nm.

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