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Radio-Frequency Transitions on Weakly Bound Ultracold Molecules



C Chin, Paul S. Julienne


We show that radio-frequency spectroscopy on weakly-bound molecules is a powerful and sensitive tool to probe molecular energy structure as well as atomic scattering properties. An analytic expression of the rf excitation lineshape is derived, which in general contains a bound-free component and a bound-bound component. In particular, we show that the bound-free process strongly depends on the sign of the scattering length in the outgoing channel and acquires a Fano-type profile near a Feshbach resonance. The derived lineshapes provide an excellent t to both the numerical calculation and the experimental measurements.
Physical Review A (Atomic, Molecular and Optical Physics)
No 1


Feshbach resonance, lineshape, lithium, radio frequency spectroscopy, scattering length, ultracold molecule


Chin, C. and Julienne, P. (2005), Radio-Frequency Transitions on Weakly Bound Ultracold Molecules, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed June 25, 2024)


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Created December 31, 2004, Updated October 12, 2021