Defect formation in BAF_2 crystals doped with cadmium

摘要

Defect formation in BaF_2 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 CaF_2 (at 3.8 eV), SrF_2 (at 3.95 eV) and BaF_2 (at 4.08 eV) is assigned to absorption of Cd~+-ions. In addition, two type hole centers: pure V_k and perturbed V_k-centers, are observed in BaF_2-1%CdF_2 crystals X-irradiated at 77 K.