| Original Articles |
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Assignment of Infrared and Far-Infrared Transitions of
CH2CF2 |
| LIU Yu-Yan1,2;HUANG Guang-Ming1,3;SHI Li-Hua1;DUAN Chuan-Xi3 |
| 1Department of Physics, Central China Normal University, Wuhan 430079
2Department of Physics, East China Normal University, Shanghai 200062
3Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 |
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| Cite this article: |
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LIU Yu-Yan, HUANG Guang-Ming, SHI Li-Hua et al 2002 Chin. Phys. Lett. 19 1280-1282 |
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Abstract Starting from the Watson A-reduced Hamitonian and considering the infrared transitions with ΔKa = 0, ΔKc = ±1 (A-type) or ΔKa = ±1, ΔKc = ±1 (B-type), and the far-infrared transitions with ΔKa = 0,±2 and ΔKc = ±1, we calculate all the possible infrared absorption and far-infrared emission transitions of the v4 and v9 bands of 1,1-difluoroethylene (CH2CF2) pumped by 10P10 and 10P12 CO2 laser lines, and assign four previously unassigned CH2CF2 far-infrared laser lines (291.3μm, 339.3μm, 349.5μm and 657.9μm), where Ka and Kc represent the quantum number K of the limiting prolate top and the limiting oblate top, respectively. The 291.3μm line is identified to be generated from the cascade transition. The assignment of the 288.5μm line by Lafferty et al. (J. Mol. Spectrosc. 87(1981)416) is also confirmed.
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| Keywords:
33.20.Vq
33.80.Be
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Published: 01 September 2002
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| PACS: |
33.20.Vq
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(Vibration-rotation analysis)
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33.80.Be
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(Level crossing and optical pumping)
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