State-to-state rotational excitation of CO by H2 near 1000 cm-1 collision energy

被引：14

作者：

Antonova, S ^{[1
]}

Tsakotellis, AP ^{[1
]}

Lin, A ^{[1
]}

McBane, GC ^{[1
]}

机构：

[1] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2000年 / 112卷 / 02期

关键词：

D O I：

10.1063/1.480547

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：

Relative state-to-state rotationally inelastic cross sections for excitation of carbon monoxide by hydrogen were measured in a crossed molecular beam experiment at collision energies 795, 860, and 991 cm(-1). The results are compared to predictions of a recent ab initio potential energy surface [J. Chem. Phys. 108, 3554 (1998)]. The agreement is very good. A comparison with older data on thermally averaged total depopulation cross sections [Chem. Phys. 53, 165 (1980)] indicates that the absolute magnitudes of the cross sections predicted by the surface are too high. The CO excitation is dominated by collisions that are elastic in H-2 rotation, and the collision dynamics are very similar for different rotational levels of hydrogen. (C) 2000 American Institute of Physics. [S0021-9606(00)01702-5].

引用

页码：554 / 559

页数：6

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