The Analysis of Vibrational Structure of the Electronic Spectra of Diatomic Molecules
YU Chun-ri1,2, CUI Zhi-feng2,WANG Rong-kai3
1. School of Physics and Electrical Engineering of Anqing Teachers College, Anqing 246011, China 2. Department of Physics, Anhui Normal University, Wuhu 241000, China 3. School of Physics and Chemistry, Guizhou Normal University, Guiyang 550001, China
Abstract：On the basis of the spectrum term of a electronic rotational-vibrational energy level, the law of vibrational band sequences and progressions in diatomic molecules was analysed. According to the law, the Deslandres table and its nature were summarized. How to indicate the measured values of a electronic-vibrational spectrum was illustrated by taking the Swan band spectra of the C2 molecule as an example. In the example, the measured values were put in order which formed the Deslandres table in terms of the law of vibrational structure. The authors can gain some important data, such as anharmonicity constants and harmonic oscillator frequencies in different vibrational states, concerning the band spectra of molecules. Furthermore, the formula of wave numbers of every band spectrum was derived.
Key words：Electronic spectra;Analysis of vibrational structure;Deslandres table
余春日1,2,崔执凤2,汪荣凯3. 双原子分子电子光谱的振动结构分析[J]. 光谱学与光谱分析, 2006, 26(06): 1012-1017.
YU Chun-ri1,2, CUI Zhi-feng2,WANG Rong-kai3 . The Analysis of Vibrational Structure of the Electronic Spectra of Diatomic Molecules. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1012-1017.
