Observation and deperturbation of near-dissociation ro-vibrational structure of the Cs2 state 0u(+) (A(1)Σu(+)∼b(3)Π0+u) at the asymptote 6S1/2 + 6P1/2

Wenliang Liu; Rundong Xu; Jizhou Wu; Jinxin Yang; Sergey S Lukashov; Vladimir B Sovkov; Xingcan Dai; Jie Ma; Liantuan Xiao; Suotang Jia

doi:10.1063/1.4931646

Observation and deperturbation of near-dissociation ro-vibrational structure of the Cs2 state 0u(+) (A(1)Σu(+)∼b(3)Π0+u) at the asymptote 6S1/2 + 6P1/2

J Chem Phys. 2015 Sep 28;143(12):124307. doi: 10.1063/1.4931646.

Authors

Affiliations

¹ State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China.
² State Key Laboratory for Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China.
³ Department of Physics, St. Petersburg State University, Ulyanovskaya Street 1, Petrodvoretz, St. Petersburg 198504, Russia.

PMID: 26429011
DOI: 10.1063/1.4931646

Abstract

New ro-vibrational structures of cold Cs2 in the 0u(+) state near the asymptote 6S1/2 + 6P1/2 are resolved. The variation of the rotational constants shows that the related energy spectra are strongly perturbed. An analysis of new data along with the empirical and theoretical information available from other sources is performed. For this purpose the model of spin-orbit coupling of the Hund's case (a) states A(1)Σu(+)∼b(3)Πu proposed by Bai et al. [Phys. Rev. A 83, 032514 (2011)] is extrapolated to the dissociation limit, and the parameters of the extrapolation are fitted from the near-dissociation experimental data.