Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 29, Issue 10, Pages 8498-8503Publisher
SPRINGER
DOI: 10.1007/s10854-018-8863-0
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) [17H01375, 17K14911, 16H06983]
- A-STEP from Japan Science and Technology Agency (JST)
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We have developed CsBr transparent ceramics doped with various concentrations of Tl (0.01, 0.1, 0.2, 0.3 and 0.5 mol%) by spark plasma sintering and then investigated for scintillator applications. Regarding the scintillation properties, all the samples showed emission peaking around 360 nm due to P-3(1) -> S-1(0) transitions of Tl+ ion. In addition, all the samples showed emission due to off-center self-trap exciton, which appeared around 490 nm. Among the present samples, the 0.2% Tl-doped sample showed the highest light yield (22,000 photons/MeV) under Cs-137 exposure. Moreover, the scintillation response demonstrated a good linearity with gamma-ray energies of Cd-109, Co-57, Ba-133, Na-22 and Cs-137 sources.
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