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Global analysis of data on the spin-orbit-coupled A 1Σu+ and b 3Π<inf>u</inf> states of Cs<inf>2</inf>
Bai, J Ahmed, EH Beser, B Guan, Y Kotochigova, S Lyyra, AM Ashman, S Wolfe, CM Huennekens, J Xie, F
Bai, J
Ahmed, EH
Beser, B
Guan, Y
Kotochigova, S
Lyyra, AM
Ashman, S
Wolfe, CM
Huennekens, J
Xie, F
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Journal Article
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2011-03-28
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10.1103/PhysRevA.83.032514
Abstract
We present experimentally derived potential curves 1?and spin-orbit interaction functions for the strongly perturbed AΣu+ 3?and bΠu 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 Aimé Cotton primarily to study the XΣg+ state. More recent work at Tsinghua University provides information from moderate 3?resolution spectroscopy on the lowest levels of the bΠ0u± state as well as additional high-resolution data. From Innsbruck University, we have precision data obtained with cold Cs2 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. © 2011 American Physical Society.
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Physical Review A - Atomic, Molecular, and Optical Physics
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