Li Qifeng, Wang Hua, Yu Yuanqin, Liu Shilin, Yu Shuqin, Ma Xingxiao. High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1[J]. Chinese Journal of Chemical Physics , 2005, 18(4): 474-478. doi: 10.1088/1674-0068/18/4/474-478
Citation: Li Qifeng, Wang Hua, Yu Yuanqin, Liu Shilin, Yu Shuqin, Ma Xingxiao. High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1[J]. Chinese Journal of Chemical Physics , 2005, 18(4): 474-478. doi: 10.1088/1674-0068/18/4/474-478

High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1

doi: 10.1088/1674-0068/18/4/474-478
Funds:  Project supported by the State Key Development Program for Basic Research of China (1999075304) and the National NaturalScience Foundation of China (20373066).
  • Received Date: 2004-04-23
  • The absorption spectrum of OCS molecules under jet-cooled conditions has been measured between 64150 and 65840 cm-1 with a highly resolved tunable vacuum ultraviolet (VUV) laser (about 0.2 cm-1), generated by two-photon resonant four wave mixing process. During the experiment, the VUV intensities prior and posterior to the OCS absorption were monitored simultaneously in order to increase the sensitivity of absorption measurement, and the absorption sensitivity △I/I was determined to be 1%. The measured spectrum is essentially similar to the S(1S) photofragment excitation spectrum under similar conditions, indicating that the dissociation to produce S(1S) fragment is the main pathway. The difference between these kinds of spectra, however, implies the existence of other dissociation channels in addition to the S(1S) pathway.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1

doi: 10.1088/1674-0068/18/4/474-478
Funds:  Project supported by the State Key Development Program for Basic Research of China (1999075304) and the National NaturalScience Foundation of China (20373066).

Abstract: The absorption spectrum of OCS molecules under jet-cooled conditions has been measured between 64150 and 65840 cm-1 with a highly resolved tunable vacuum ultraviolet (VUV) laser (about 0.2 cm-1), generated by two-photon resonant four wave mixing process. During the experiment, the VUV intensities prior and posterior to the OCS absorption were monitored simultaneously in order to increase the sensitivity of absorption measurement, and the absorption sensitivity △I/I was determined to be 1%. The measured spectrum is essentially similar to the S(1S) photofragment excitation spectrum under similar conditions, indicating that the dissociation to produce S(1S) fragment is the main pathway. The difference between these kinds of spectra, however, implies the existence of other dissociation channels in addition to the S(1S) pathway.

Li Qifeng, Wang Hua, Yu Yuanqin, Liu Shilin, Yu Shuqin, Ma Xingxiao. High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1[J]. Chinese Journal of Chemical Physics , 2005, 18(4): 474-478. doi: 10.1088/1674-0068/18/4/474-478
Citation: Li Qifeng, Wang Hua, Yu Yuanqin, Liu Shilin, Yu Shuqin, Ma Xingxiao. High Resolution Absorption Spectrum of Jet-cooled OCS Between 64150 and 65840 cm-1[J]. Chinese Journal of Chemical Physics , 2005, 18(4): 474-478. doi: 10.1088/1674-0068/18/4/474-478

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