摘要
我们用脉冲光学 光学双共振荧光激发谱 (OODR) ,测量了在 35 5 0 0～ 380 0 0cm- 1 能量范围内的里德堡态 ,观察到7Li2 31 Πg 态的 10个振动能级。本文对观测的 31 Пg 态的 14 6条激发谱线进行了归属 ,得到了新的Dunham常数 ,RKR势能曲线以及A1 Σ+ u 到 31 Πg 态跃迁的夫兰克 康登因子 ,并且讨论了 31 Πg 态的双重分裂以及与附近里德堡态F(4) 1 Σ+g ,5 1 Σ+g ,6 1 Σ+g 和G(2 ) 1 Πg 的微扰。发现在我们的实验精度下(0 2cm- 1 ) 31 Πg
With pulsed optical optical double resonance (OODR) fluorescence excitation spectroscopy Rydberg states of 7Li 2 in the energy region of 35 500-38 000 cm -1 were studied and 146 transitions into the 3 1 Π g state of 7Li 2 were measured.They were assigned to 10 vibrational levels of the 3 1 Π g state.A new set of Dunham constants,RKR potential curve,and Franck Condon factors for the transitions form the A 1 Σ + u state are derived.The perturbations between the 4(F) 1 Σ + g,5 1 Σ + g,6 1 Σ + g,2(G) 1 Π g Rydberg states with the 3 1 Π g state are discussed.The Λ doubling splitting of the observed levels can be ignored with our accuracy (0 2 cm -1 ).
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2002年第3期363-367,共5页
Spectroscopy and Spectral Analysis
基金
SupportedbyNSF (1 980 4 0 0 8,2 0 1 730 2 9, 2 99730 2 0 )
NKBRSFofChina.
