Abstract
The relative amounts of Cl(2P3/2) [Cl], Cl(2P,1/2) [Cl*], H, and HCl produced by 193 nm photodissociation of CH3CF2Cl and CH3CFCl2 were studied by a laser pump-and-probe technique. An excimer laser photodissociated the parent molecules and a frequency doubled tunable dye laser probed the photofragments via ( 2 + 1 ) resonantly enhanced multiphoton ionization coupled with a time-of-flight mass spectrometer. Only atomic products were observed; no HCl was found. The profiles were well fitted to Gaussians. The Cl*/Cl branching ratios were almost identical, 0.18 ±0.04 and 0.16±0.04, while the H/(Cl+Cl*) ratios were 0.67±0.21 and 0.18±0.07, for CH3CF2Cl and CH3CFCl2, respectively. The mechanism for the production of the atomic species is discussed.
Original language | English |
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Pages (from-to) | 8476-8482 |
Number of pages | 7 |
Journal | Journal of Chemical Physics |
Volume | 107 |
Issue number | 20 |
DOIs | |
State | Published - 22 Nov 1997 |
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry