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Absorption Spectroscopy of (8,1) Band in d3△-a3ПSystem of CS Radical
Chuan-liang Li1, Lun-hua Deng*2, Yan Zhang2, Ji-lin Wei1, Yang-qin Chen2
1.Department of Physics, School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;2.State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China
Abstract:
The CS radical was generated by discharging the mixture gas of CS2 and Helium. The Doppler limited spectra of CS were recorded in the region of 12350~12950 cm-1 using optical heterodyne concentration modulation absorption spectroscopy. Three hundred and twenty-six lines were recorded and assigned to the d3△-a3П(8,1) band, in which eighty-three transitions were first observed. A set of improved molecular constants for the d3△(v=8) and a3П(8,1)(v=1) levels were determined by a non-linear least-squares fitting of all the lines to the effective Hamiltonian.
Key words:  CS radical, Concentration modulation absorption spectroscopy, Molecular constant
FundProject:
CS自由基的d3△-a3П(8, 1)带吸收光谱
李传亮1, 邓伦华*2, 张燕2, 魏计林1, 陈扬骎2
1.太原科技大学,应用科学学院,物理系,太原030024;2.华东师范大学,精密光谱科学与技术国家重点实验,物理系,上海20062
摘要:
采用光外差-浓度调制吸收光谱技术测量了12350~12950 cm-1波段的氦气和二硫化碳混合气体放电生成硫化碳自由基分子的多普勒受限光谱. 通过光谱分析,发现了d3△-a3П(8, 1)带的326条谱线,其中有83条谱线为首次观测. 利用有效哈密顿量矩阵元,使用非线性最小二乘拟合方法对所有指认的谱线进行拟合,获得了d3△(v=8)和a3П(v=1)态的高精度分子常数.
关键词:  CS自由基,浓度调制吸收光谱,分子常数
DOI:10.1088/1674-0068/25/05/513-518
分类号: