PHOTODISSOCIATION DYNAMICS OF ACETALDEHYDE - VIBRATIONAL-ENERGY DISTRIBUTION IN THE PHOTOFRAGMENT HCO

Citation
T. Gejo et al., PHOTODISSOCIATION DYNAMICS OF ACETALDEHYDE - VIBRATIONAL-ENERGY DISTRIBUTION IN THE PHOTOFRAGMENT HCO, Chemical physics letters, 218(4), 1994, pp. 343-348
Citations number
26
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
ISSN journal
00092614
Volume
218
Issue
4
Year of publication
1994
Pages
343 - 348
Database
ISI
SICI code
0009-2614(1994)218:4<343:PDOA-V>2.0.ZU;2-X
Abstract
Vibrationally excited HCO radicals have been observed in the photodiss ociation of acetaldehyde in a supersonic jet with the pump-probe techn ique. The threshold wavelength for the bending and CO-stretching excit ations was 308.7 and 302.6 nm, respectively. The nascent vibrational d istribution relative to the ground state has been determined as a func tion of the excitation wavelength for the 280-300 nm region. The obser ved vibrational distribution of HCO was found to be consistent with th e model in which the excess energy above the reaction barrier is stati stically distributed among the fragments' degrees of freedom.