PRODUCT STATE DISTRIBUTION IN THE PHOTODISSOCIATION OF VINYL-CHLORIDE AT 193 NM

被引：59

作者：

REILLY, PTA

XIE, YJ

GORDON, RJ

机构：

[1] Department of Chemistry (111), University of Illinois at Chicago, Chicago, IL 60680

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 178卷 / 5-6期

关键词：

D O I：

10.1016/0009-2614(91)87011-Y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The rotational state populations of HCl(upsilon" = 0, 1, and 2) and the fine structure population of Cl(2P(j)) 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 upsilon" = 1 and 2, with temperatures of 2100 +/- 250 and 1800 +/- 140 K, respectively. In contrast, for upsilon" = 0 a non-Boltzmann distribution was observed, with low- and high-J "temperatures" of 340 and 22600 K, respectively. The very different rotational distributions observed for upsilon" = 0 and upsilon" > 0 suggest the existence of a dual mechanism for elimination. 89% of the Cl atoms were observed in the 2P3/2 state, which is indicative of an adiabatic recoil mechanism.

引用

页码：511 / 516

页数：6

共 26 条

[1] DETECTION OF CL ATOMS AND HCL MOLECULES BY RESONANTLY ENHANCED MULTIPHOTON IONIZATION [J].