✦ LIBER ✦

Product state distribution in the photodissociation of vinyl chloride at 193 nm

✍ Scribed by Peter T.A. Reilly; Yongjin Xie; Robert J. Gordon

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 500 KB
Volume: 178
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(91)87011-y

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✦ Synopsis

The rotational state populations of HCI ( u" = 0, 1, and 2) and the tine structure population of Cl( 'P,) produced in the UV photodissociation of vinyl chloride were measured in a molecular beam pump-and-probe experiment. Boltzmann-like distributions were observed for the rotational populations in vibrational states u" = 1 and 2, with temperatures of 2100 k 250 and 1800 f 140 K, respectively. In contrast, for un = 0 a non-Boltzmann distribution was observed, with low-and high-.! "temperatures" of 340 and 22600 K, respectively. The very different rotational distributions observed for D'I = 0 and c" > 0 suggest the existence ofa dual mechanism for elimination. 89% of the Cl atoms were observed in the 'P,,, state, which is indicative of an adiabatic recoil mechanism.

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