ICCAS OpenIR
The v-v energy transfer of highly vibrationally excited states (I) - Vibrational quenching of CO(v) by CO2
Wang, BS; Gu, YS; He, Y; Kong, FA
1998-09-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume43Issue:18Pages:1536-1541
AbstractThe relaxation of the highly vibrationally excited CO (v = 1-8) by CO2 is studied by time-resolved Fourier transform infrared emission spectroscopy (TR FTIR). 193 nm laser photolysis of the mixture of CHBr3 with O-2 generates the highly vibrationally excited CO(v) molecules. TR FTIR records the intense infrared emission of CO(v-->v - I). The vibrational populations of each level of CO(v) have been determined by the method of spectral simulation. Based on the evolution of the time resolved populations and the differential method, 8 energy transfer rate constants of CO (v = 1-8) to CO2 molecules are obtained: (5.7 +/- 0.1), (5.9 +/- 0.1), (5.2 +/- 0.2), (3.4 +/- 0.2), (2.4 +/- 0.3), (2.2 +/- 0.4), (2.0 +/- 0.4) and (1.8 +/- 0.6) (10(-14) cm(3).molecule(-1).s(-1)), respectively. A two-channel energy transfer model can explain the feature of the quenching of CO(v) by CO2. For the lower vibrational states of CO, the vibrational energy transfers preferentially to the upsilon(3) mode of CO2. For the higher levels, the major quenching channel changes to the vibrational energy exchange between CO(v-->v - 1) and the upsilon(1) mode of CO2.
KeywordTime-resolved Ir Spectrum Highly Vibrational Excited State Vibrational Energy Transfer
Indexed BySCI
Language英语
WOS IDWOS:000076896600008
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/74574
Collection中国科学院化学研究所
Corresponding AuthorWang, BS
Affiliation1.Shandong Univ, Dept Chem, Jinan 250100, Peoples R China
2.Inst Chem, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, BS,Gu, YS,He, Y,et al. The v-v energy transfer of highly vibrationally excited states (I) - Vibrational quenching of CO(v) by CO2[J]. CHINESE SCIENCE BULLETIN,1998,43(18):1536-1541.
APA Wang, BS,Gu, YS,He, Y,&Kong, FA.(1998).The v-v energy transfer of highly vibrationally excited states (I) - Vibrational quenching of CO(v) by CO2.CHINESE SCIENCE BULLETIN,43(18),1536-1541.
MLA Wang, BS,et al."The v-v energy transfer of highly vibrationally excited states (I) - Vibrational quenching of CO(v) by CO2".CHINESE SCIENCE BULLETIN 43.18(1998):1536-1541.
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