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Characterization of 2D Al2O3:C,Mg radiophotoluminescence films in charged particle beams
https://repo.qst.go.jp/records/81730
https://repo.qst.go.jp/records/81730b47c2c0c-bedb-49eb-9468-5eff64cb882c
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-01-26 | |||||
| タイトル | ||||||
| タイトル | Characterization of 2D Al2O3:C,Mg radiophotoluminescence films in charged particle beams | |||||
| 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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 |
Marijke, De Saint-Hubert
× Marijke, De Saint-Hubert× Castellano, Fabio× Leblans, Paul× Sterckx, Paul× Satoshi, Kodaira× Swakon, Jan× de Freitas Nascimento, Luana× Satoshi, Kodaira |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In particle-therapy, 2D dosimetry systems require high spatial resolution and linear dose response as the patient treatment show steep gradients of dose in depth. In this work we report on the characterization of the radiophotoluminescence (RPL) response from Al₂O₃:C,Mg films exposed to proton (61.3 MeV, 91.5 MeV, 155.5 MeV and 230 MeV) and carbon clinical beams (110 MeV/u). The film response is evaluated in terms of properties particularly important for relative dose measurements, as dose response, film uniformity and minimum detectable dose. The films, based on coatings with average grain sizes of ≈7 μm, demonstrate a better response than those used in our previous studies, with grain sizes of ≈47 μm. Moreover, the Linear Energy Transfer (LET) changes when penetrating through material and it is known that solid-state detectors change luminescence efficiency ηHT,γ as a function of LET. Therefore, we performed a detailed characterization of our new film to evaluate its response as function of dose and LET. The ηHT,γ curve, as a function of particle LET, obtained from discrete dose points (slabs) ηHT,γ is compared with the ηHT,γ curves from Al₂O₃:C (OSL) and Al₂O₃:C,Mg (RPL) films from our previous study. The ηHT,γ curves are consistent with Birks’ law, where we observe expected quenching for increasing LET. Additionally, we present 2D RPL images, using a wedge phantom, from Al₂O₃:C,Mg films irradiated with proton and carbon beams, which resulted in a 2D depth dose distribution of the Bragg curve and a comparable LET dependence with the data obtained with the slabs. The results confirm that the images obtained can be advantageously applied to obtain dose distribution in proton and carbon therapy without many corrections. | |||||
| 書誌情報 |
Radiation Measurements 巻 141, p. 106518, 発行日 2021-02 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1350-4487 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.radmeas.2021.106518 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.radmeas.2021.106518 | |||||
