H+N2O collision dynamics: Branching ratios for T-V energy transfer and the effect of N2O vibrational excitation on the reaction kinetics

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	H+N2O collision dynamics: Branching ratios for T-V energy transfer and the effect of N2O vibrational excitation on the reaction kinetics
	Neil, WS; Li, JY; Sloan, JJ; Kong, FA
刊名	JOURNAL OF CHEMICAL PHYSICS
	1997-09-22
卷号	107 期号:12 页码:4537-4545
ISSN号	0021-9606
英文摘要	We report time-resolved Fourier transform spectroscopic measurements on the kinetics of the reaction of vibrationally excited N2O with hydrogen atoms. Vibrationally excited N2O is formed by T-V energy transfer in collisions with hydrogen atoms having 2.3 eV of translational energy. Although the T-V process is capable of exciting the N2O to vibrational levels up to 18500 cm(-1), collisions in which the relative translational energy is greater than 11000 cm(-1) result in rapid reaction to form either NH(X (3) Sigma) + NO(X (II)-I-2) or OH(A (2) Sigma(+)) + N-2(X (1) Sigma(+)). N2O which is vibrationally excited to energies between 6000 and 11000 cm(-1), reacts with thermal hydrogen atoms, with a rate constant which is about 1.7 X 10(-10) cm(-3) molecule(-1) s(-1). N2O vibrationally excited to levels below 6000 cm(-1) [the height of the barrier to reaction forming OH(X (II)-I-2) + N-2 on the ground-state surface] is lost very slowly, presumably by deactivation, with a rate constant which is about four orders of magnitude slower than the reaction. The results indicate that increasing the vibrational energy of the N2O by 11000 cm(-1) increases the cross section for the reaction with hydrogen atoms by about seven orders of magnitude. (C) 1997 American Institute of Physics.
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:A1997XX49300010
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/44765]
专题	中国科学院化学研究所
通讯作者	Neil, WS
作者单位	CHINESE ACAD SCI,INST CHEM,BEIJING 100080,PEOPLES R CHINA
推荐引用方式 GB/T 7714	Neil, WS,Li, JY,Sloan, JJ,et al. H+N2O collision dynamics: Branching ratios for T-V energy transfer and the effect of N2O vibrational excitation on the reaction kinetics[J]. JOURNAL OF CHEMICAL PHYSICS,1997,107(12):4537-4545.
APA	Neil, WS,Li, JY,Sloan, JJ,&Kong, FA.(1997).H+N2O collision dynamics: Branching ratios for T-V energy transfer and the effect of N2O vibrational excitation on the reaction kinetics.JOURNAL OF CHEMICAL PHYSICS,107(12),4537-4545.
MLA	Neil, WS,et al."H+N2O collision dynamics: Branching ratios for T-V energy transfer and the effect of N2O vibrational excitation on the reaction kinetics".JOURNAL OF CHEMICAL PHYSICS 107.12(1997):4537-4545.