从头算
原子物理学
从头算量子化学方法
双原子分子
铷
化学
激发
势能
光谱学
二聚体
电子结构
离解(化学)
物理
计算化学
物理化学
量子力学
有机化学
钾
分子
作者
W. Jastrzębski,P. Kowalczyk,J. Szczepkowski,A. Allouche,P. Crozet,Amanda Ross
摘要
Two-colour polarization labelling experiments have been used to explore the excitation spectrum of the rubidium dimer in the region 25,500-27,000 cm(-1), probing two mutually interacting states, identified from ab initio calculations as the 5(1)Σu(+) and 5(1)Πu states whose atomic dissociation products are Rb(5s) + Rb(5d). Treating the rather irregular progressions observed in the excitation spectra as transitions to single states with (numerous) local perturbations, we propose spectroscopic parameters and potential energy curves to describe the investigated levels. Observations cover more than 20 vibrational levels in the inner minima of both the 5(1)Πu and 5(1)Σu(+) states. Analysis was guided by ab initio calculations performed to describe the (1,3)Λg,u electronic states of Rb2 up to the Rb(5s) + Rb(5f) atomic asymptote. The theoretical potential energy curves are given in ASCII format in an electronic supplement to this paper.
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