Analytical studies of the fluorescence of samarium in calcium tungstate

Trace analysis of lanthanides by laser excitation of precipitates

“…Fluorescence from a specific crystallographic site of a specific rare earth ion in the lattice can be selectively excited and monitored with a nitrogen laser pumped dye laser and a high resolution monochromator. Wright (4) has show that this technique can be applied to the analysis of nonfluorescent ions as well if a new crystallographic site is formed by the presence of a nonfluorescent impurity ion residing near a fluorescent probe ion in the lattice.…”