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arXiv · 1208.3649

Photoassociation to the 2(1)Sigma(g)(+) state in ultracold 85Rb2 in the presence of a shape resonance

M. A. Bellos·R. Carollo·D. Rahmlow·J. Banerjee·E. E. Eyler·P. L. Gould·W. C. Stwalley
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Abstract

We report the first observation of photoassociation to the 2(1)Sigma(g)(+) state of 85Rb2 . We have observed two vibrational levels (v'=98, 99) below the 5s1/2+5p1/2 atomic limit and eleven vibrational levels (v'=102-112) above it. The photoassociation---and subsequent spontaneous emission---occur predominantly between 15 and 20 Bohr in a region of internuclear distance best described as a transition between Hund's case (a) and Hund's case (c) coupling. The presence of a g-wave shape resonance in the collision of two ground-state atoms affects the photoassociation rate and lineshape of the J'= 3 and 5 rotational levels.

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M. A. Bellos, R. Carollo, D. Rahmlow, J. Banerjee, E. E. Eyler, P. L. Gould, W. C. Stwalley. 2012-08-17. Photoassociation to the 2(1)Sigma(g)(+) state in ultracold 85Rb2 in the presence of a shape resonance. https://doi.org/10.1103/physreva.86.033407

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