ROTATIONAL AND VIBRATIONAL-ENERGY TRANSFER IN CH(A2-DELTA)

被引:38
作者
COOPER, JL [1 ]
WHITEHEAD, JC [1 ]
机构
[1] UNIV MANCHESTER,DEPT CHEM,MANCHESTER M13 9PL,LANCS,ENGLAND
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 09期
关键词
D O I
10.1039/ft9938901287
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
Rate constants have been obtained for rotational and vibrational energy transfer within the A 2DELTA state of CH by collisions with Ar and N2. By using laser photolysis of CHBr3 as the source of CH(A), it was possible to produce a wide range of rotational and vibrational levels (N less-than-or-equal-to 25, v less-than-or-equal-to 2). The rate constants for rotational relaxation are comparable to gas kinetic rates (k < 2.5 x 10(-10) cm3 molecule-1 s-1) and decrease with increasing rotational quantum number. The efficiency of vibrational relaxation is ca. 10 times less than that of rotational relaxation (k < 6.5 x 10(-12) cm3 molecule-1 s-1).
引用
收藏
页码:1287 / 1290
页数:4
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