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Calculating off-axis efficiency of coaxial HPGe detectors by Monte Carlo simulation
https://repo.qst.go.jp/records/86291
https://repo.qst.go.jp/records/86291a288835c-b143-44a5-8168-557492802406
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-06-13 | |||||
| タイトル | ||||||
| タイトル | Calculating off-axis efficiency of coaxial HPGe detectors by Monte Carlo simulation | |||||
| 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 |
M.Omer
× M.Omer× Toshiyuki, Shizuma× Ryoichi, Hajima× M.Koizumi× Toshiyuki, Shizuma× Ryoichi, Hajima |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In beam geometries where a directed γ-ray beam hits the surface of a coaxial high purity germanium detector (HPGe), the detector efficiency is sensitive to the position where γ-rays initially hit the detector surface because the structure of the detector is nonuniform. This may cause inaccuracy of the detector efficiency when measured using standard sources that are point-like sources emitting γ-rays isotropically. Obtaining a precise estimation of the full energy peak efficiency of the coaxial HPGe detector in the beam geometry for on-axis and off-axis measurements requires a Monte Carlo simulation. We performed Monte Carlo simulations that calculate the detector efficiency in the beam geometry. The effects of the off-axis distance and γ-ray beam size on the efficiency are quantitatively analyzed. We found that the intrinsic efficiency in the beam geometry is maximized when the beam hits the detector at specific off-axis distances. Our Monte Carlo calculations have been supported by nuclear resonance fluorescence experiments using laser Compton scattering γ-ray beams. | |||||
| 書誌情報 |
Radiation Physics and Chemistry 巻 198, p. 110241, 発行日 2022-06 |
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| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.radphyschem.2022.110241 | |||||
