Optical vibronic spectra of aggregates in eu2+ -doped kci and kbr crystals
2003; Mexican Society of Physics; Volume: 49; Issue: 2 Linguagem: Espanhol
ISSN
2683-2224
AutoresR. Pérez Salas, Ricardo Rodríguez Mijangos, T.M. Piters, R. Aceves, M. Barboza‐Flores,
Tópico(s)Atomic and Molecular Physics
ResumoLA ESTRUCTURA VIBRONICA DE LOS ESPECTROS DE EMISION, ABSORCION Y EXCITACION DE CRISTALES DE KCL Y KBR IMPURIFICADOS CON EUROPIO DIVALENTE, SE HA OBTENIDO EXPERIMENTALMENTE. LOS CRISTALES FUERON ENVEJECIDOS A 435K. DURANTE EL PROCESO DE AGREGACION, 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 VIBRACION PARA CADA GRUPO ES MUY SIMILAR. Abstract 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.
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