期刊
RADIATION MEASUREMENTS
卷 71, 期 -, 页码 162-165出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radmeas.2014.03.020
关键词
Scintillation; Scintillator; OSL; Ce3+; CaF2
Scintillation and optical stimulated luminescence of Ce 0.1-20% doped CaF2 crystals prepared by Tokuyama Corp. were investigated. In X-ray induced scintillation spectra, luminescence due to Ce3+ 5d -4f transition appeared around 320 nm with typically 40 ns decay time. By Am-241 5.5 MeV alpha-ray irradiation, 0.1% doped one showed the highest scintillation light yield and the light yield monotonically decreased with Ce concentrations. Optically stimulated luminescence after X-ray irradiation was observed around 320 nm under 550 or 830 nm stimulation in all samples. As a result, intensities of optically stimulated luminescence were proportional to Ce concentrations. Consequently, scintillation and optically stimulated luminescence resulted to have a complementary relation in Ce-doped CaF2 system. (C) 2014 Elsevier Ltd. All rights reserved.
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