The Observation of a New D‐Absorption Band in KBr–In Crystals

Abstract

Excitation spectra of the activator luminescence directly excited by UV light and creation spectra of the photostimulated luminescence are investigated for KBr-In crystals with different In' concentrations. It is shown that the electronic states responsible for these two kinds of luminescence differ. Careful analysis of the excitation spectra allow us to find a new D-absorption band having Gaussian shape with the following parameters: peak position at E, = 6.375 eV and halfwidth A E = 0.14 eV.The oscillator strength f = 0.12 of the D-band is also determined.') LV-2169 Salaspils-1, Latvia.