Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
Phys Chem Chem Phys. 2011 Nov 14;13(42):18769-80. doi: 10.1039/c1cp21191a. Epub 2011 Aug 25.
Homo- and heteronuclear alkali quartet trimers of type K(3-n)Rb(n) (n = 0,1,2,3) formed on helium nanodroplets are probed by one-color femtosecond (fs) photoionization (PI) spectroscopy. The obtained frequencies are assigned to vibrations in different electronic states in comparison to high level ab initio calculations of the involved potentials including pronounced Jahn-Teller and spin-orbit couplings. Despite the fact that the resulting complex vibronic structure of the heavy alkali molecules complicates the comparison of experiment and theory we find good agreement for many of the observed lines for all species.
氦纳米液滴上形成的 K(3-n)Rb(n)（n = 0,1,2,3）型同核和异核碱 quartet trimers 被单波长飞秒（fs）光电离（PI）光谱法探测。与包括明显 Jahn-Teller 和自旋轨道耦合在内的高水准从头算（ab initio）计算所得的相关势能相比，获得的频率被分配到不同电子态的振动中。尽管重碱分子复杂的协同振动结构使得实验和理论的比较变得复杂，但我们发现对于所有物种的许多观测线都存在很好的一致性。
