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We have studied the X 1{\Sigma}+ and B 1{\Pi} states of 7Li85Rb using LaserInduced Fluorescence (LIF) spectroscopy and Fluorescence ExcitationSpectroscopy (FES). We extract molecular constants for levels v" = 0-2 of the X1{\Sigma}+ state and levels v' = 0-20 of the B 1{\Pi} state. For the B 1{\Pi}state, we have observed rotational perturbations in the e-parity component ofthe v' = 2 level, and determined the dissociation energy. We discussimplications of our measurements in finding efficient photoassociation pathwaysfor production of ultra-cold ground state LiRb molecules, and their detectionvia state selective ionization.

Laser spectroscopy of the X 1{\Sigma}+ and B 1{\Pi} states of the LiRb molecule