Hyperfine, rotational, and vibrational structure of the a 3 Σ u + state of Rb 87 2
作者： K. Winkler , R. Grimm , J. Hecker Denschlag , E. Tiemann , C. Strauss
DOI: 10.1103/PHYSREVA.82.052514
关键词: Molecule 、 Feshbach resonance 、 Magnetic field 、 Atomic physics 、 Spectroscopy 、 Hyperfine structure 、 Binding energy 、 Singlet state 、 Physics 、 Ground state
摘要: We have performed high-resolution two-photon dark-state spectroscopy of an ultracold gas Rb molecules in the triplet ground state at a magnetic field about 1000 G. The vibrational ladder as well hyperfine and low-lying rotational structure is mapped out. Energy shifts spectrum are observed due to singlet-triplet mixing binding energies deep few hundred GHz x h. This information together with data from other sources used optimize potentials singlet states coupled-channel model. find that depends weakly on level. provides possible explanation for inaccuracies recent Feshbach resonance calculations.
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