Photolytic spectroscopy of Cs2 molecules

Populations of the n(2)L(nL=7P, 6D) states of Cs atoms by photodissociation of Cs-2 molecules through the use of the fixed frequence line 441.6 nm of a He-Cd laser radiation are produced. Combining ratios of atomic to molecular fluorescence at the Cs density range between 1 and 9 X 10(15) cm(-3), the ratios of collisional rate coefficient to predissociation rates are estimated to be 2.9 X 101(7) cm(3) and 7.4 X 10(-8) cm(3), respectively. The branching ratios are defined as the ratios of nL(j) to nL(j), fluorescence. The ratios of the dissociation rates produced in n(2)L fine-structure states are 0.53 and 0.43, respectively. Fine-structure changing cross section has been measured for far wing excitation, the result is consistent with cross section obtained from other excitation of the n(2)L states. The cross section for excitation transfer out of the 6D doublet [i.e., Cs(6D) + Cs(6S)-states other than Cs(6D)] is 1.9 X 10(-14) cm(2).