M. Chertanov et al., SPECTROSCOPIC STUDY OF CRYSTALLINE ND2O2S OPTICAL-ABSORPTION MEASUREMENTS, CRYSTAL-FIELD ANALYSIS AND INTENSITY CALCULATIONS, Journal of luminescence, 59(4), 1994, pp. 231-246
Room temperature and low temperature optical absorption measurements a
re performed on Nd2O2S in crystal and powder form. The experimental os
cillator strengths are deduced and compared with calculations at 8 and
300 K including the contribution of Judd-Ofelt and Jorgensen-Judd mec
hanisms. The global oscillator strengths are satisfactorily reproduced
by considering the sum of both contributions but the relative intensi
ties of the strong transitions are best reproduced by the Jorgensen-Ju
dd mechanism alone.