Precise Molecular Constants for the6Li2A1Σ+u–X1Σ+gSystem by Sub-Doppler Polarization Spectroscopy
✍ Scribed by Xuejun Wang; Jie Yang; Jianbing Qi; A.Marjatta Lyyra
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 774 KB
- Volume
- 191
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
We report here new and more accurate molecular constants from sub-Doppler polarization spectroscopy of the A1Sigma+u-X1Sigma+g system of 6Li2 using single mode cw dye lasers. These new constants cover the range of vibrational levels from v" = 0-8 in the ground state and v' = 0-24 in the excited state. New molecular constants and RKR potential energy curves for the A1Sigma+u and X1Sigma+g states are given. The Te value for the A1Sigma+u state is 14068.043(34) cm-1. The analysis indicates that there is a noticeable breakdown of the Born-Oppenheimer approximation for the 6Li2 and 7Li2 isotopomers. Copyright 1998 Academic Press.