| Study of hot bands in the B2Σ+u-X2Σ+g system of C-2 anion |
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| 作者姓名： | 喻姗姗 杨晓华 李本霞 Kaniki Kakule 吴升海 郭迎春 刘煜炎 陈扬骎 |
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| 作者单位： | Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;University of Kinshasa, Faculty of Engineering, P.O. Box 255 Kinshasa 11, Dem. Rep. of Congo;Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;Key Laboratory of Optical & Magnetic Resonance Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062, China;Department of Physics, East China Normal University, Shanghai 200062, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 10174020, 10204007) and Shanghai Priority Academic Discipline. |
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| 摘 要： | Optical heterodyne magnetic rotation enhanced velocity modulation spectroscopy was employed to observe the visible absorption spectra of the B^2Σ^+_u-X^2Σ^+_g electronic transition of C^-_2. Four hot bands (0,1), (1,2), (2,3) and (3,4) have been observed and the band (3,4) is measured directly for the first time, so far as we know, by absorption. A rotational analysis was carried out to obtain molecular constants. With the Franck－Condon principle and the vibrational Boltzmann distribution, we have estimated the vibrational temperature of C^-_2 to be about 3000K.
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| 关 键 词： | C2^－离子 二价碳阴离子 速度调制光谱 振动光谱 谱带 分子物理学 |
| 收稿时间： | 2002-12-10 |
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