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Revista mexicana de física
Print version ISSN 0035-001X
Abstract
PEREZ-SALAS, R. et al. Optical vibronic spectra of aggregates in Eu2+ -doped KCl and KBr crystals. Rev. mex. fis. [online]. 2003, vol.49, n.2, pp.102-106. ISSN 0035-001X.
The vibronic structure on the optical absorption, emission, and excitation spectra of aggregates in Eu2+-doped KCl and KBr crystals has been obtained. The crystals were annealed at 435K. During the aggregation process, four groups of narrow bands were found in KCl:Eu2+ and two, in KBr:Eu2+, which were considered as the signature of different Eu2+-ion aggregated phases. The vibration frequency for each group is very similar.
Keywords : Luminiscence in solids; alkali halides with europium.