Scientific Results

Determination of the Rb-87 5p state dipole matrix element and radiative lifetime from the photoassociation spectroscopy of the Rb-2 0(g)(-)(P-3/2) long-range state

Year: 2002

Authors: Gutterres R.F., Amiot C., Fioretti A., Mazzoni M., Gabbanini C., Dulieu O.

Autors Affiliation: Laboratoire Aime´ Cotton, Baˆtiment 505, Campus d’Orsay, 91405 Orsay Cedex, France;
Instituto di Fisica Atomica e Molecolare del CNR, via Alfieri 1, I-56010 Ghezzano, Pisa, Italy;
Unita` INFM, Dipartimento di Fisica, Universita` di Pisa, Piazza Torricelli 2, I-56126 Pisa, Italy;
IEQ-CNR, Via Panciatichi, 56, 50127 Firenze, Italy

Abstract: We present a detailed study of the 0(g)(-)(P-3/2) pure long-range electronic state of the Rb-87(2) molecule. The high-resolution spectral data provided by photoassociative spectroscopy of Rb-87(2) is analyzed by using the generalized simulated annealing method. The dipole matrix element of the 5p Rb-87 atomic state and other effective asymptotic parameters for the 0(g)(-)(P-3/2) long-range state are determined and a complete analytical description of the potential well is obtained. We extract a radiative lifetime of the 5P(3/2) and 5P(1/2) states equal to 26.25(8) ns and 27.75(8) ns, respectively, with a precision (0.3%) comparable to atomic physics experiment.

Journal/Review: PHYSICAL REVIEW A

Volume: 66 (2)      Pages from: 024502-1  to: 024502-4

KeyWords: ATOMS; MOLECULES; POTENTIALS; CONSTANTS; LITHIUM; DIMERS; RB2
DOI: 10.1103/PhysRevA.66.024502

Citations: 62
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