Abstract
AbstractEffects of X, β and VUV radiation were studied in BaF2:CuCl2 and BaF2:Mn,Ce crystals. Methods of optical absorption and of luminescence were applied; X‐luminescence (XL), photoluminescence (PL), thermoluminescence (TL), photo‐transferred TL (PTTL) and optically stimulated luminescence (OSL) as well as emission and excitation spectra were measured. Optical stimulation for PTTL and OSL investigations was carried out at liquid nitrogen temperature (LNT) in samples that had previously been X or β irradiated at room temperature (RT) and the results were compared to those obtained in nominally pure BaF2 crystals. The TL excitation spectra showed maxima at the long‐wavelength side of the first exciton band. In the VUV induced TL, some of the peaks appeared at the same temperature as in the X‐induced TL, indicating that the same radiation‐induced traps were created by the different types of radiation. The TL efficiency of some of the crystals was found to be of the same order of magnitude as that of the known TL dosimetric material LiF:Mg,Ti (TLD 100). (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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