Doppler-free UV-visible optical–optical double resonance polarization spectroscopy of the 2 1Σu+ double minimum state and the C 1Πu state of Li2
作者： Shunji Kasahara , Paweł Kowalczyk , Md. Humayun Kabir , Masaaki Baba , Hajime Katô
DOI: 10.1063/1.1308089
关键词: Potential energy 、 Spectral line 、 Atomic physics 、 Spectroscopy 、 Polarization (waves) 、 Rotational spectroscopy 、 Quantum tunnelling 、 Semiclassical physics 、 Chemistry 、 Rectangular potential barrier
摘要: Doppler-free UV-visible optical–optical double resonance polarization spectra of the 2 1Σu+←X 1Σg+ and C 1Πu←X 1Σg+ transitions in 7Li2 molecules were measured. In case minimum 2 1Σu+ state to all vibrational levels (except lowest two) localized inner potential well, several outer well some beyond barrier observed. Potential energy curves C 1Πu(v=0–10) are determined by RKR method. A V(R) curve describing whole (including both wells) is constructed using Inverted Perturbation Approach (IPA). Tunneling splittings shifts observed, their magnitudes represented a semiclassical model IPA potential. Perturbations between C 1Πu(v,J) 2 1Σu+(v′,J) detected region above state, where rotational constant the...
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