Experimental investigation of the Cs2 a 3Σu+ triplet ground state: Multiparameter Morse long range potential analysis and molecular constants

We have observed the vibrational levels v ''=0-40 of the Cs-2 a (3)Sigma(+)(u) state by perturbation facilitated infrared-infrared double resonance excitation and spectrally resolved fluorescence measurements, and derived a multiparameter Morse long range potential and molecular constants based on these data. (c) 2009 American Institute of Physics. [DOI: 10.1063/1.3075580]