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EVALUATION OF THE EFFECTIVE DETECTION AREA OF RADIATION DETECTORS
https://repo.qst.go.jp/records/43330
https://repo.qst.go.jp/records/4333048832443-ccbd-405f-a41b-4c62dfae803a
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2004-01-13 | |||||
| タイトル | ||||||
| タイトル | EVALUATION OF THE EFFECTIVE DETECTION AREA OF RADIATION DETECTORS | |||||
| 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 |
Ichitsubo, Hirokazu
× Ichitsubo, Hirokazu× Tokonami, Shinji× Miyamoto, Katsuhiro× Yamada, Yuji× 一坪 宏和× 床次 眞司× 宮本 勝宏× 山田 裕司 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radiation detectors (of the circular type) are utilized for the detection of radioactive particles deposited, e.g., (i) on each cascade impactor stage, in the measurement of radioactive aerosol particle size distribution and (ii) on air filters for the measurement of concentrations of radioactive aerosols (e.g. radon progeny) in the environment. The counting efficiency of the detector is related to both the geometric size of the detector, and the deposited area of radioactive aerosol particles. Although the detector size, for example, represents a constant factor unless the detector is exchanged, the area of deposition on the impactor stage or a filter is not of constant dimensions. When a cascade type impactor is used, the area of deposited aerosol particles is different for each impactor stage. In this report, we discuss the effects of both the geometric size of the detector, and the size of the area of deposition, on geometric counting efficiency. We also discuss the effective detection area of a radiation detector. The geometric counting efficiency decreases distinctly with increasing distance between the detector and the sample containing the deposited particles, when the area of deposited aerosol particles is equal in size to the detector. This result means that the effective diameter of the detector can be estimated by measuring the distinctive counting efficiency curve. We found that the actual working detection area (effective detection area) of radiation detectors available on the market could be calibrated by measuring the curve. If accurate measurement of size distribution is required using a particular kind of cascade impactor, detected radiation levels at each impactor stage should be corrected, including the parameters relating to the influence of the effective detection area of the detector, and for the actual area of deposition for the sample on each impactor stage. | |||||
| 書誌情報 |
High Levels of Natural Radiation and Radon Areas : Radiation Dose and Health Effects : Proceedings of the 5th International Conference on High Levels of Natural Radiation and Radon Areas, held in Munich,Germany on September 4 to 7, 2000 vol.II :Poster Presentation(BfS Schriften 24-2002) p. 39-42, 発行日 2002-07 |
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| 出版者 | ||||||
| 出版者 | Bunddesamt fur Strahlenschutz | |||||
| ISBN | ||||||
| 識別子タイプ | ISBN | |||||
| 関連識別子 | 3-8970-1808 | |||||
