(ns_(1/2)+np_(1/2))(0_(g))~(-) Rb_(2) and Cs_(2) photo-associative spectroscopy of weakly bound levels: Lu-Fano analysis coupled to an improved LeRoy-Bernstein formula.

摘要

We report on the study of the (ns_(1/2)+np_(1/2))(0_(g))~(-)^sRb_(2) and Cs_(2) weakly-bound-level photoassociative spectroscopy in a magneto-optical trap. For the analysis, a Lu-Fano graph is plotted for each set of data. We show that an improved LeRoy-Bernstein formula must to be used. The data is then analysed by a classical procedure using the improved LeRoy-Bernstein formula. The (ns_(1/2)+np_(1/2))(0_(g))~(-)^sRb_(2) and Cs_(2) multipolar coefficients c_(6) are fitted. They are found to be in good agreement with previous results.