Global analysis of data on the spin-orbit-coupled A (1)Sigma( )(u) and b (3)Pi(u) states of Cs-2

作者：Bai Jianmei^*; Ahmed E H; Beser B; Guan Y; Kotochigova S; Lyyra A M; Ashman S; Wolfe C M; Huennekens J; Xie Feng; Li Dan; Li Li; Tamanis M; Ferber R; Drozdova A; Pazyuk E; Stolyarov A V; Danzl J G; Naegerl H C; Bouloufa N; Dulieu O; Amiot C; Salami H; Bergeman T

来源：Physical Review A, 2011, 83(3): 032514.

DOI：10.1103/PhysRevA.83.032514

• Ab initio
• Discrete variable representation
• Finite difference
• Fourier Transform spectroscopy
• Global analysis
• Hamiltonian matrix
• High resolution
• Laser induced fluorescence
• Morse oscillator
• Moscow State University
• Optical-optical double resonance
• Polarization spectroscopy
• Potential curves
• Spin orbit interactions
• Spin orbits
• Term value
• Tsinghua University

We present experimentally derived potential curves and spin-orbit interaction functions for the strongly perturbed A (1)Sigma( )(u) and b (3)Pi(u) states of the cesium dimer. The results are based on data from several sources. Laser-induced fluorescence Fourier transform spectroscopy (LIF FTS) was used some time ago in the Laboratoire Aim'e Cotton primarily to study the X (1)Sigma( )(g) state. More recent work at Tsinghua University provides information from moderate resolution spectroscopy on the lowest levels of the b (3)Pi( /-)(0u) state as well as additional high-resolution data. From Innsbruck University, we have precision data obtained with cold Cs-2 molecules. Recent data from Temple University was obtained using the optical-optical double resonance polarization spectroscopy technique, and finally, a group at the University of Latvia has added additional LIF FTS data. In the Hamiltonian matrix, we have used analytic potentials (the expanded Morse oscillator form) with both finite-difference (FD) coupled-channel and discrete variable representation (DVR) calculations of the term values. Fitted diagonal and off-diagonal spin-orbit functions are obtained and compared with ab initio results from Temple and Moscow State universities.

• 出版日期2011-3-28
• 单位清华大学