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Satellite bands of the RbCs molecule in the range of highly excited states

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4952758· OSTI ID:22657822
; ;  [1]; ; ;  [2];  [3]
  1. Institute of Physics, Bijenička cesta 46, Zagreb 10000 (Croatia)
  2. Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, Université Paris-Saclay, Bât. 505, Campus d’Orsay, Orsay Cedex 91405 (France)
  3. Physics Department, Kuwait University, PO Box 5969, Safat—13060 (Kuwait)
We report on the observation of three RbCs satellite bands in the blue and green ranges of the visible spectrum. Absorption measurements are performed using all-sapphire cell filled with a mixture of Rb and Cs. We compare high resolution absorption spectrum of Rb-Cs vapor mixture with pure Rb and Cs vapor spectra from the literature. After detailed analysis, the new satellite bands of RbCs molecule at 418.3 nm, 468.3, and 527.5 nm are identified. The origin of these bands is discussed by direct comparison with difference potentials derived from quantum chemistry calculations of RbCs potential energy curves. These bands originate from the lower Rydberg states of the RbCs molecule. This study thus provides further insight into photoassociation of lower Rydberg molecular states, approximately between Cs(7s) + Rb(5s) and Cs(6s) + Rb(6p) asymptotes, in ultracold gases.
OSTI ID:
22657822
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 20 Vol. 144; ISSN JCPSA6; ISSN 0021-9606
Country of Publication:
United States
Language:
English