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Study of (2, 0) Band of A2∏u-X2∑+ g System of N2+ by Optical Heterodyne Detected Velocity Modulation Spectroscopy
Yan-dan Wu1,2, Jin-wen Ben1,2, Ling Li1,2, Li-juan Zheng1,2, Yang-qin Chen1,2, Xiao-hua Yang*1,2
1.Key Laboratory of Optical and Magnetic Resonance Spectroscopy, Ministry of Education, and Department of Physics, East China Normal University, Shanghai 200062, China;2.Department of Physics and Electronic Engineering, Hanshan Normal University, Chaozhou 52
Abstract:
The (2, 0) band of the A2∏u-X2∑§+g system of N2+ was rotationally studied via optical heterodyne detected velocity modulation spectroscopy. Owing to the high sensitivity of the spectroscopy employed, the frequencies of 310 lines of this band were accurately determined. Moreover, those overlapped lines were also well determined via deconvolution method. A nonlinear least-squares fitting procedure using a standard Hamiltonian was applied to analyze this band. Therefore, the most accurate molecular constants were obtained.
Key words:  N2+ molecular ion, Spectrum, Molecular constant
FundProject:
附件
N2+分子离子A2∏u-X2∑+g 系(2,0)带光外差速度调制光谱
吴燕丹,贲景文,李玲,郑利娟,陈扬骎,杨晓华*
光谱学与波谱学教育部重点实验室,华东师范大学物理系,上海 200062
摘要:
采用光外差速度调制光谱技术研究了N2+分子离子A2∏u-X2∑+g 系(2,0)带转动光谱.由于所用技术的高灵敏度特性,精确地确定了该带310条谱线的频率,其中,那些重叠谱线的频率也通过解谱精确地确定了.利用标准Hamilton量,采用非线性最小二乘方法对该带进行了分析,获得了最精确的分子常数.
关键词:  N2+分子离子,光谱,分子常数
DOI:10.1088/1674-0068/20/3/285-290
分类号: