Formation of ultracold metastable Rb2 molecules in their v"=0 level by blue-detuned photoassociation

Details Formation of ultracold metastable Rb2 molecules in their v"=0 level by blue-detuned photoassociation Formation of ultracold metastable Rb2 molecules in their v"=0 level by blue-detuned photoassociation

2011-05-02

arxiv.org/abs/1105.0451v1

Physics

Atomic Physics

Submitted to Physical Chemistry Chemical Physics

Scientific paper

We report on the observation of blue-detuned photoassociation in Rb2, in which vibrational levels are energetically above the corresponding excited atomic asymptote. 85Rb atoms in a MOT were photoassociated at short internuclear distances to levels of the (1)3Pi g state at a rate of approximately 5x10^4 molecules/s. We have observed most of the predicted vibrational levels for all four spin-orbit components 0g+, 0g-, 1g, and 2g, including levels of the 0g+ outer well. These molecules decay to the metastable a3Sigma u+ state, some preferentially to the v"=0 level, as we have observed for photoassociation to the v'=8 level of the 1g component.

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