Intensity study of LIF spectrum for the B0+u and X0+g system of a tellurium natural sample

The fluorescence spectrum of a tellurium sample in its natural isotopic abundance, induced by the 4764.8 A line of an argon ion laser is studied. The study of natural tellurium samples allows us to bring out and analyze the intensity of three fluorescence series not previously reported. Photographic plates and densitometric techniques were used when recording experimental intensities. The radiative transition probabilities for the observed fluorescence series were calculated by using hybrid Perturbed-Morse-Oscillator (PMO) - Rydberg-Klein-Rees (RKR)- Long Range potential energy curves for the B0+u and X0+g states and a function for the transition dipole moment in the framework of the r-centroid approximation. Radiative lifetimes of the rovibrational levels for the upper state pumped by the laser line have also been calculated. The transition probabilities and lifetimes are in good agreement with the corresponding observed measurements usually within the experimental uncertainty. (Copyright (c) 1998 Elsevier Science B.V., Amsterdam. All rights reserved.)