Resumen de Optical vibronic spectra of aggregates in Eu^(2+)-doped KCI and Kbr crystals
R. Pérez Salas, T.M. Piters, R. Aceves, R. Rodríguez Mijangos, M. Barboza Flores
- español
La estructura vibrónica de los espectros de emisión, absorción y excitación de cristales de KCl y KBr impurificados con europio divalente, se ha obtenido experimentalmente. Los cristales fueron envejecidos a 435K. Durante el proceso de agregación, se encontraron cuatro grupos KCl: Eu^(2+) y dos en KBr: Eu^(2+), las cuales se consideraron como la firma de diferentes fases agregadas de iones Eu^(2+). La frecuencia de vibración para cada grupo es muy similar.
- English
The vibronic structure on the optical absorption, emission, and excitation spectra of aggregates in Eu^(2+)-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: Eu^(2+), which were considered as the signature of different Eu^(2+)-ion aggregated phases. The vibration frequency for each group is very similar.
