Breaking of the World record of light yield for Eu:SrI2 scintillator by control of valence using co-dopant
Project/Area Number |
25600130
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
General applied physics
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Research Institution | Tohoku University |
Principal Investigator |
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Project Period (FY) |
2013-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | ハロゲン化物 / シンチレータ / 単結晶 / ガンマ線シンチレータ / シンチレータ単結晶 |
Outline of Final Research Achievements |
Eu:SrI2 with high light yield and energy resolution have been investigated as a next-generation scintillator. We developed the novel crystal growth method for Eu:SrI2 single crystals and the crystals could be grown. However, the I vacancy in the crystal which is generated during crystal growth deteriorate the scintillation properties. Therefore, in this study, we grew trivalent cations (La, Gd, Lu) co-doped Eu:SrI2 single crystals and their scintillation properties were investigated. La co-doped Eu:SrI2 crystals included maximum concentration of co-dopant. However, light yield of La co-doped Eu:SrI2 crystals decreased and the decrease of light yield was considered to be due to the decrease of light around 435 nm by an increase of emission around 500 nm.
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Report
(3 results)
Research Products
(8 results)
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[Presentation] Recent study on scintillation materials - oxide and halide crystal2013
Author(s)
Akira Yoshikawa, Shunsuke Kurosawa, Yuui Yokota, Kei Kamada, Jan Pejchal, Yasuhiro Shoji, Hisakazu Nagato, Shoki Hayasaka, Akihiro Yamaji, Akira Suzuki, Shotoro Suzuki, Mafuyu Seki, Nishimoto Kei, Tetsuo Kudo, Kosuke Hishinuma
Organizer
IWIRM9
Place of Presentation
Oarai, Japan
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