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Thermal luminescence efficiency of Al2O3:Cr ceramic to heavy charged particle
https://repo.qst.go.jp/records/66824
https://repo.qst.go.jp/records/668249ebd3fcd-0598-479a-95f9-437816647026
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-06-11 | |||||
| タイトル | ||||||
| タイトル | Thermal luminescence efficiency of Al2O3:Cr ceramic to heavy charged particle | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Chang, Weishan
× Chang, Weishan× Koba, Yusuke× Shimomura, Risa× Shinsho, Kiyomitsu× Matsumoto, Kazuki× Ushiba, Hiroki× Ando, Takayuki× 張 維珊× 古場 裕介 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Introduction: Recent research has shown alumina-based ceramics TLD (A8, Chibacera Mfg. Co.) is easy to handle and owns a less LET-dependent glow peak which is potential for measurement in heavy charged particle (HCP) therapy beam. However, the sensitivity of is not stable enough for implantation in radiotherapy field. Therefore, a TLD made by chromium-doped alumina (A10, Chibacera Mfg. Co.) was developed to improve the sensitivity. Purpose: This study aims to provide basic dosimetric properties of A10. Material and methods: To obtain the thermal luminescence (TL) efficiency, A10 were irradiated using a 160 MeV/u proton beam, a 150 MeV helium beam, a 290 MeV/u carbon beam, a 400 MeV/u Neon beam and a 500 MeV/u Argon beam. TL efficiency was normalized by a 6MV X-ray. A10 was heated to 400 oC at a heating rate of 0.2 degree per second and the glow curves were read by an in-house developed readout system. To improve the accuracy, the timeline of the readout procedure was consistent for each experiment in the present study. Results: The dose to response curve of A10 was linear in the range of 0.5-5 Gy for each beam but the slope was different to each other. The TL efficiency of A10 increased from 0.84 to 1.18 at LET range from 0.5 keV/μm to 13.2 keV/μm and decreased to 0.6 when keV/μm was 197 keV/μm. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | World Congress on Medical Physics & Biomedical Engineering | |||||
| 発表年月日 | ||||||
| 日付 | 2018-06-07 | |||||
| 日付タイプ | Issued | |||||
