Abstract
Ternary M-K-Zn (M ≡; Mg, Ca, Ba) sulphate glasses doped with 1 mol.% praseodymium sulphate were prepared by quenching. Absorption spectra were recorded for these glasses in the UV-visible and near-IR regions. The Racah, spin-orbit and configuration interaction parameters were evaluated by least-squares fit from the observed energies of the bands. Using Judd-Ofelt theory, theoretical intensity parameters, radiative lifetimes, branching ratios and absorption cross-sections were calculated for the excited 3P 1, 3P 0 and 1D 2 levels.
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