Double excitation transitions in Mn2+ -doped alkali halides

It is shown in this work that the room-temperature excitation spectra of as-grown crystals of LiF, NaF, NaCl, KCl, and KBr doped with Mn2+ reveal the existence of double excitation peaks. These peaks are related to the formation of precipitated phases containing Mn2+ in the alkali halide lattice. In the case of LiF:Mn2+ the position of the [A14(G), E4(G)] and T14(G) peaks suggests an anomalously small Mn2+- F- distance for the precipitated phase. Â© 1983 The American Physical Society.

Financial support by the Comision Asesora para la Investigacion Cientifica y Tecnica, is gratefully acknowledged.

4 págs.; 4 figs.

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