Abstract:
The photoassociative spectroscopy of the Cs2 0 g - long-range molecular state dissociating into the asymptote is performed, using cold cesium atoms in a vapor-cell magneto-optical trap (MOT). Vibrational levels from v =0 to v =132 are identified, and their rotational structure is well resolved up J =8 for levels below v =74. These data are analyzed in terms of the Rydberg-Klein-Rees (RKR) procedure, and correspond to 99.6% of an effective potential curve with a minimum at Å and a cm-1 depth. Both ab initio calculations and simple model estimations predict a double-well structure for this potential curve, which cannot be reproduced presently by the RKR approach but which is confirmed by the presence of giant structures in the spectrum. The 1u()long-range state is also observed for the first time in Cs2.
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Received: 20 May 1998 / Revised: 1st August 1998 / Accepted: 5 November 1998
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Fioretti, A., Comparat, D., Drag, C. et al. Photoassociative spectroscopy of the long-range state. Eur. Phys. J. D 5, 389–403 (1999). https://doi.org/10.1007/s100530050271
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DOI: https://doi.org/10.1007/s100530050271