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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
关键词Time-resolved Ir Spectrum Highly Vibrational Excited State Vibrational Energy Transfer
刊名CHINESE SCIENCE BULLETIN
1998-09-01
43期:18页:1536-1541
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]RATES ; N2O
英文摘要The 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.
语种英语
WOS记录号WOS:000076896600008
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138194
专题中国科学院大连化学物理研究所
作者单位1.Shandong Univ, Dept Chem, Jinan 250100, Peoples R China
2.Inst Chem, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
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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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