The fluorescence spectra of theAthinsp;1Sgr;+undash;Xthinsp;1Sgr;+ganda3pgr;undash;Xthinsp;1Sgr;+gtransitions in Cs2have been measured as a function of temperature and Xe buffer gas density. The observed spectra were normalized to the Cs atomic emission. The Xe density dependence of the normalized fluorescence was used to determine an average formation rate constant for theAthinsp;1Sgr; state of 4.2times;10minus;30cm6/sec. Using a value of 10minus;29cm6/sec for theathinsp;3pgr; formation rate constant, predissociation and quenching rate constants from theathinsp;3pgr; to thexthinsp;3Sgr; were determined to be 2.5times;109secminus;1and 9.8times;10minus;11cm3/sec. Also, the net collisional transfer rate constant from theAthinsp;1Sgr; toathinsp;3pgr; was 1.5times;10minus;11cm3/sec. The fluorescence spectra were also used to predict the Cs atomic excited state fraction needed to produce an inversion on theAndash;Xtransition. The experimentally inferred value was 11percnt; compared wit a theoretical prediction of 0.25percnt;. This result, coupled with the large loss rates, indicate that Cs2is not an attractive laser candidate on theAndash;Xtransition.
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