| CO三重带系d3Δ-a3Π(4,0)和(5,0)带激光光谱研究 |
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| 引用本文： | 李本霞,杨晓华,郭迎春,Kaniki K,喻姗姗,刘煜炎,陈扬骎.CO三重带系d3Δ-a3Π(4,0)和(5,0)带激光光谱研究[J].光学学报,2004,24(2):255-259. |
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| 作者姓名： | 李本霞 杨晓华 郭迎春 Kaniki K 喻姗姗 刘煜炎 陈扬骎 |
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| 作者单位： | 1. 华东师范大学物理系光谱学与波谱学教育部重点实验室,上海,200062
2. 金沙萨大学工程系,刚果民主共和国,金沙萨 |
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| 基金项目： | 国家自然科学基金 (10 174 0 2 0 )，上海市重点学科和波谱学与原子分子物理国家重点实验室资助课题 |
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| 摘 要： | 光外差磁旋转浓度调制激光光谱技术属于一种高灵敏度的吸收光谱测量方法 ,可以用于瞬态分子和激发态分子光谱的检测。采用这种技术分别在 16 4 0 0～ 16 6 5 0cm-1和 174 5 0～ 1775 0cm-1波段内直接观测到CO三重带系d3 Δ←a3 Π(4,0 ) (5 ,0 )振转吸收光谱。这种跃迁的上态d3 Δ1(v =4 ) ,d3 Δ2 (v =4 ) ,d3 Δ1(v =5 )分别与A1Π(v =0 ) ,D1Δ(v =0 )和A1Π(v =1)态存在微扰相互作用。通过对所测量到的 CO三重带系 (4,0 ) (5 ,0 )振转谱带作了包含微扰相互作用在内的分析 ,获得了上态d3 Δ(v =4 ,5 )的精确的分子转动光谱常数。
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| 关 键 词： | 分子光谱学 CO分子三重带系光谱常数 光外差磁旋转浓度调制光谱技术 CO分子 |
| 收稿时间： | 2002/12/24 |
Study of the (4,0) and (5,0) Spectral Bands in the Triplet System d3Δ-a3Π of CO |
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| Li Benxia Yang Xiaohua Guo Yingchun Kakule K Yu Shanshan Liu Yuyan Chen Yangqin Key Laboratory of Optical & Magnetic Resonance Spectroscopy,and.Study of the (4,0) and (5,0) Spectral Bands in the Triplet System d3Δ-a3Π of CO[J].Acta Optica Sinica,2004,24(2):255-259. |
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| Authors: | Li Benxia Yang Xiaohua Guo Yingchun Kakule K Yu Shanshan Liu Yuyan Chen Yangqin Key Laboratory of Optical & Magnetic Resonance Spectroscopy and |
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| Institution: | Received 29 December 2002; revised 20 March 2003 |
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| Abstract: | Optical heterodyne magnetic rotation enhanced concentration modulation spectroscopy which is a high sensitive spectroscopic technique for detection of transient and excited molecules, is employed to directly observe the rovibronic absorption spectrum of CO (d3Δ←a3Π) in the regions of 16400～16500 cm-1 and 17450～17750 cm-1 respectively. The (4,0) and (5,0) bands of CO triplet system were observed and analyzed by taking account of the perturbation interaction between the d3Δ1 (v=4),d3Δ2 (v=4) states and A1Π(v=0),D1Δ (v=0) states, respectively, d3Δ1 (v=5) and A1Π (v=1) states as well. A set of precise rotational molecular constants for the d3Δ (v=4,5) have been determined. |
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| Keywords: | molecular spectroscopy spectral constants of CO triplet system optical heterodyne-magnetic rotation-concentration modulation spectroscopy (OH -MR -CMS) CO molecule |
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