6533b7d4fe1ef96bd12630aa

RESEARCH PRODUCT

Colour centres in LiBaF3 crystals

I. TaleP. KulisUldis RogulisMaris SpringisJ. TrokssH.-j. FittingA. Veispals

subject

CrystallographyRadiationAbsorption spectroscopyChemistryAtomic electron transitionchemistry.chemical_elementLithiumIrradiationRadiationDichroismAbsorption (electromagnetic radiation)InstrumentationMolecular physics

description

Abstract The origin of the absorption bands in LiBaF 3 created by X-ray irradiation at RT has been investigated. It is found that three absorption bands at 270, 320 and 430 nm represent different electron transitions within a radiation defect effectively created in LiBaF 3 single crystals. Following the Mollwo–Ivey relation we discuss investigations of optical dichroism, magnetic optical dichroism, as well as the assumptions regarding the accumulation kinetics of these absorption bands, the F centre being the main radiation defect created by X-rays in undoped LiBaF 3 crystals at RT.

https://doi.org/10.1016/s1350-4487(98)00020-1