Abstract
We have studied resonance-enhanced two-photon ionization of ultracold 39K85Rb molecules in highly excited long-range vibrational levels of the X 1Σ+ and a 3Σ+ states. These molecules are formed by photoassociation (PA) of ultracold 39K and 85Rb atoms, followed by spontaneous emission to the X 1Σ+ and a 3Σ+ states. In the range 15 500–17 200 cm−1, we observe many intermediate and long-range levels of the previously unobserved 4 3Σ+ and 4 1Σ+ states and evidence for the onset of the previously unobserved 3 3Π state. The observed vibrational spectra of these states are in very good agreement with calculated vibrational levels based on the ab initio potentials of Rousseau, Allouche and Aubert-Frécon. Such experiments illustrate some of the unique advantages of using PA-produced ultracold molecules for investigation of long-range vibrational levels and long-range forces, and for unravelling dense spectra because only a few rotational levels are populated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic, Molecular and Optical Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
