6533b858fe1ef96bd12b57a1

RESEARCH PRODUCT

Thermally and optically stimulated radiative processes in LiBaF3 crystals

I. TaleMaris SpringisAnatoly Sharakovsky

subject

RadiationOptically stimulated luminescencebusiness.industryChemistryExcitonElectronThermoluminescenceMolecular physicsSpectral lineOptoelectronicsIrradiationbusinessLuminescenceInstrumentationRecombination

description

Abstract In LiBaF3 crystals both valence–core transitions (5.4– 6.5 eV ) and so-called self-trapped exciton luminescence (about 4.3 eV ) are important for practical application. Here, we present a study of 4.3 eV luminescence under photo- and thermostimulation after X-irradiation of undoped LiBaF3 crystals at various temperatures. Optically stimulated luminescence as a result of electron recombination with both self-trapped holes and holes localized at some defects, were observed after X-irradiation below 130 K and that of electron recombination with defect-localized holes was observed after X-irradiation above 130 K . The spectra of thermo-stimulated luminescence (TSL) contain a broad band about 4 eV related to the electron (high-energy side) or hole (low-energy side) recombination depending on TSL peak temperature.

yearjournalcountryeditionlanguage
2004-08-01Radiation Measurements
https://doi.org/10.1016/j.radmeas.2004.02.002