二聚钠吸收光谱的理论研究
Theoretical study of the absorption spectra of the sodium dimer
摘要：
从理论上研究了Na（3s）-Na（3s）相关的钠二聚体分子态的辐射吸收。用量子力学方法研究了从单重态X Sigma-g ~+到第一激发单重态A Sigma-u ~+和单重态B Pi-u，以及从三重态a Sigma-u ~+到第一激发三重态b Sigma-g ~+和三重态c Pi-g的振动束缚和连续跃迁.理论和实验数据被用来表征的分子性质，利用最近获得的从头计算，光谱学，和超冷原子碰撞研究的知识。进行量子力学计算的温度范围从500至3000 K，并与以前的计算和测量进行比较。
英文摘要：
Absorption of radiation from the sodium dimer molecular states correlating to Na(3s)-Na(3s) is investigated theoretically. Vibrational bound and continuum transitions from the singlet X Sigma-g+ state to the first excited singlet A Sigma-u+ and singlet B Pi-u states and from the triplet a Sigma-u+ state to the first excited triplet b Sigma-g+ and triplet c Pi-g states are studied quantum-mechanically. Theoretical and experimental data are used to characterize the molecular properties taking advantage of knowledge recently obtained from ab initio calculations, spectroscopy, and ultra-cold atom collision studies. The quantum-mechanical calculations are carried out for temperatures in the range from 500 to 3000 K and are compared with previous calculations and measurements where available.
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