锂分子31Πg里德堡态的光谱研究 |
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引用本文: | 宋敏,易鹏,戴星灿,刘耀明,李丽.锂分子31Πg里德堡态的光谱研究[J].光谱学与光谱分析,2002,22(3). |
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作者姓名: | 宋敏 易鹏 戴星灿 刘耀明 李丽 |
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作者单位: | 溥华大学物理系和原子分子纳米科学重点实验室,北京,100084 |
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基金项目: | 国家自然科学基金,NKBRSF of China |
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摘 要: | 我们用脉冲光学-光学双共振荧光激发谱(OODR),测量了在35 500~38 000 cm-1能量范围内的里德堡态,观察到7Li231Πg态的10个振动能级.本文对观测的31Пg态的146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A1Σ+u到31Πg态跃迁的夫兰克-康登因子,并且讨论了31Πg态的双重分裂以及与附近里德堡态F(4)1Σ+g,51Σ+g,61Σ+g和G(2)1Πg的微扰.发现在我们的实验精度下(0.2 cm-1) 31Πg态的双重分裂可以忽略.
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关 键 词: | 31Πg 里德堡态 31Πg |
A Spectroscopic Study of the 31Πg Rydberg State of 7Li2 |
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Abstract: | With pulsed optical-optical double resonance (OODR) fluorescence excitation spectroscopy Rydberg states of 7Li2 in the energy region of 35 500-38 000 cm-1 were studied and 146 transitions into the 31Πg state of 7Li2 were measured.They were assigned to 10 vibrational levels of the 31Πg state.A new set of Dunham constants,RKR potential curve,and Franck-Condon factors for the transitions form the A1Σ+u state are derived.The perturbations between the 4(F)1Σ+g,51Σ+g,61Σ+g,2(G)1Πg Rydberg states with the 31Πg state are discussed.The Λ-doubling splitting of the observed levels can be ignored with our accuracy (0.2 cm-1). |
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Keywords: | Li2 7Li2 Li2 7Li2 Rydberg state |
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