Scintillation and dosimetric properties of Dy-doped CaF<sub>2</sub> translucent ceramic and single crystal
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- KAWANO Naoki
- Graduate School of Engineering Science, Akita University
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- NAKAUCHI Daisuke
- Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
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- NAKAMURA Fumiya
- Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
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- YANAGIDA Takayuki
- Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST)
Bibliographic Information
- Other Title
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- Scintillation and dosimetric properties of Dy-doped CaF2 translucent ceramic and single crystal
Abstract
<p>We synthesized a Dy-doped CaF2 translucent ceramic by the spark plasma sintering method, and investigated its scintillation and dosimetric properties compared with those of the single crystal. Both the samples showed sharp peaks across 480–670 nm due to the 4f–4f transitions of Dy3+, and a broad peak approximately at 300 nm due to the self-trapped excitons. The decay time constants of both the samples in scintillation were approximately 5 ms, which was close to those for the 4f–4f transitions of Dy3+. Regarding thermally-stimulated luminescence, the translucent ceramic exhibited higher sensitivity than the single crystal, and the dynamic range was at least 0.01–100 mGy. In addition, both the samples showed optically stimulated luminescence due to the 4f–4f transitions of Dy3+ during 590 nm stimulation light, but the lowest detection limit of both the samples was approximately 10 mGy.</p>
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 128 (2), 57-61, 2020-02-01
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390846609801913344
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- NII Article ID
- 130007793947
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- ISSN
- 13486535
- 18820743
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed