title: Spectroscopy and applications of the 3 3Σ+ electronic state of 39K85Rb.
abstract: We report new results on the spectroscopy of the 3 (3)Σ(+) electronic state of (39)K(85)Rb. The observations are based on resonance-enhanced multiphoton ionization of ultracold KRb molecules starting in vibrational levels v'' = 18-23 of the a (3)Σ(+) state and ionized via the intermediate 3 (3)Σ(+) state. The a-state ultracold molecules are formed by photoassociation of ultracold (39)K and (85)Rb atoms to the 3(0(+)) state of KRb followed by spontaneous emission. We discuss the potential applications of this state to future experiments, as a pathway for populating the lowest vibrational levels of the a state as well as the X state.
authors.affiliation: Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA.
authors.forename: Jayita
authors.initials: J
authors.lastname: Banerjee
authors.forename: David
authors.initials: D
authors.lastname: Rahmlow
authors.forename: Ryan
authors.initials: R
authors.lastname: Carollo
authors.forename: Michael
authors.initials: M
authors.lastname: Bellos
authors.forename: Edward E
authors.initials: EE
authors.lastname: Eyler
authors.forename: Phillip L
authors.initials: PL
authors.lastname: Gould
authors.forename: William C
authors.initials: WC
authors.lastname: Stwalley