Defect formation in BAF2 crystals doped with cadmium

Defect formation in BaF2 single crystals doped with cadmium is investigated by optical absorption, electron paramagnetic resonance (EPR) and thermoluminescence. An optical absorption band observed in X-irradiated at 295 K crystals CaF2 (at 3.8 eV), SrF2 (at 3.95 eV) and BaF2 (at 4.08 eV) is assigned to absorption of Cd+-ions. In addition, two type hole centers: pure Vk and perturbed Vk-centers, are observed in BaF2-1%CdF2 crystals X-irradiated at 77 K.