Dosimeter properties of Ce and Eu doped LiCaAlF6 |
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| Affiliation: | 1. Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan;2. Department of Quantum Engineering, Nagoya Univ., Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;3. Tokuyama Corporation, Shibuya 3-chome, Shibuya-ku, Tokyo 150-8383, Japan;1. Technical Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India;2. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India;3. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085, India;1. Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan;2. RIKEN, Wako 351-0198, Japan;1. Institute of Science, R.T. Road Civil Lines, Nagpur, India;2. Institute of Forensic Science, R.T. Road Civil Lines, Nagpur, India;3. R.T.M Nagpur University, Nagpur, India;4. RP & AD, Bhabha Atomic Research Centre, Mumbai, India;5. D.S.T Fellow, C/o RP & AD, Bhabha Atomic Research Centre, Mumbai, India;1. Department of Physics, Nagpur University, Nagpur 440033, India;2. Department of Physics, K.D.K. College of Engineering, Nagpur, India;3. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400085, India;1. Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 085, India;2. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India |
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| Abstract: | Optical, scintillation properties, optical stimulated luminescence, and thermally stimulated luminescence of Ce 1, 3, and 5% doped and Eu 1, 1.5, and 2% doped LiCaAlF6 crystals fabricated by Tokuyama Corp. were investigated. In transmittance, absorption was proportional to dopant concentrations and typical optical quantum yield of Ce and Eu-doped LiCaAlF6 were 40 and 100%, respectively. Scintillation wavelength and decay time profiles were investigated under X-ray irradiation. Ce3+ and Eu2+ 5d-4f luminescence appeared around 300 nm and 370 nm with typical decay time of 40 ns and 1.5 μs, respectively. Optically stimulated luminescence of Ce-doped ones appeared under 405 nm stimulation with detectable intensity while those of Eu doped ones were quite weak. Thermally stimulated luminescence of Ce- and Eu-doped LiCaAlF6 were enough strong and they exhibited good response function from 1 to 1000 mGy exposure. |
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| Keywords: | Scintillation Scintilltor OSL TSL |
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