Long-range states of the NaRb molecule near the Na($3^2{S}_{1/2}$)+Rb($5^2{P}_{3/2}$) asymptote

Abstract

We report a high-resolution spectroscopic investigation of the long-range states of the ${}^{23}$Na${}^{87}$Rb molecule near its Na($3^2{S}_{1/2}$)+Rb($5^2{P}_{3/2}$) asymptote. This study was performed with weakly bound ultracold molecules produced via magneto-association with an inter-species Feshbach resonance. We observed several regular vibrational series, which are assigned to the 5 attractive long-range states correlated with this asymptote. The vibrational levels of two of these states have sharp but complex structures due to hyperfine and Zeeman interactions. For the other states, we observed significant linewidth broadenings due to strong predissociation caused by spin-orbit couplings with states correlated to the lower Na($3^2{S}_{1/2}$)+Rb($5^2{P}_{1/2}$) asymptote. The long-range $C_6$ van der Waals coefficients extracted from our spectrum are in good agreement with theoretical values.

Phys.Rev. A in press

References in corpus (11)

• A High Phase-Space-Density Gas of Polar Molecules
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Magneto-optical trapping of a diatomic molecule
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Quo vadis, cold molecules? - Editorial review
• Quantum Gas of Deeply Bound Ground State Molecules
• Ultracold dense gas of deeply bound heteronuclear molecules
• Reactions of ultracold alkali metal dimers
• Coherent optical transfer of Feshbach molecules to a lower vibrational state
• Formation of Ultracold NaRb Feshbach Molecules

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• High Resolution Molecular Spectroscopy for Producing Ultracold Absolute Ground-State ${}^{23}$Na${}^{87}$Rb Molecules
• Observation of photon recoil effects in single-beam absorption spectroscopy with an ultracold strontium gas
• Empirical LiK excited state potentials: connecting short range and near dissociation expansions