Potential energy curves for selected electronic states of LiRb (ab initio calculations from Ref. 6).
Fluorescence progression following the X–B(0-0)P(36) excitation at 17000.92 cm. The vibrational numbering of the state was established from the characteristic intensity distribution of the vibrational progression. At the bottom of the strong lines collisional satellites are visible.
The range of experimental data for the state in LiRb for all four isotopologues.
A fluorescence spectrum recorded with laser excitation at 17943.91 cm of the transition (20,24)–(2,24). The progression to the state can be followed up to , but is missing due to absorption by the D2 transition of Rb. The two weaker lines close to the inverted atomic Rb D1 line around 12575 cm are due to fluorescence to the state . They can easily be assigned by their characteristic broadening from the underlying hyperfine structure.
Pointwise representation of the potential energy curve for the state of LiRb.
Selected Dunham coefficients for LiRb in cm. See supplementary material for the full list (Ref. 32).
Parameters of the analytic representation of the state potential with adiabatic Born-Oppenheimer correction and reference isotopologue LiRb. The energy reference is the dissociation asymptote. Parameters with an asterisk ensure smooth continuous extrapolation of the potential at .
Parameters of the analytic representation of the potential curve of the state. The energy reference is the dissociation asymptote. Parameters with an asterisk ensure smooth continuous extrapolation of the potential at .
List of experimentally observed Feshbach resonances in Li + Rb collisions (Refs. 11–13} and comparison with theoretical models. All values in Gauss. The numbers in brackets indicate the respective experimental uncertainty in units of the last digit shown for the measured field values. The results of model I and II are from Ref. 12.
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