| 基于γ放射源的便携式照射装置研究 |
| Study on portable irradiation device based on γ radioactive source |
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| 中文摘要: |
| 为解决现场校准在线监测用固定式辐射剂量监测仪表时需提供标准辐射场的问题，本研究运用蒙特卡洛模拟方法，设计并建立了基于γ放射源的便携式照射装置，该装置放射源屏蔽切换挡位不少于3个，表面漏射线减小到有用射线束的0.5%，辐射场均匀性优于5%，满足固定式X、γ辐射剂量率仪现场校准工作需要，弥补固定式辐射剂量监测仪表现场量值传递服务能力的短板。 |
| 英文摘要: |
| In order to solve the problem that the reference radiation field should be provided for field calibration of fixed radiation dose rate monitoring instruments used for on?site online monitoring, this work developed a portable radiation source irradiation device based on γ source using Monte Carlo simulation method. The radiation source shielding switch gears are not less than 3, the surface leakage ray is lower than 0.5% compared with the useful ray beam, and the radiation field non?uniformity is less than 5%, which meet the fixed X or γ radiation dose meter field calibration needs. The study has improved the quantity transfer ability for the field calibration of the fixed dose rate meters. |
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| 中文关键词: 便携式照射装置 γ放射源 固定式辐射剂量监测仪 现场校准 |
| 英文关键词:portable irradiation device γ radioactive source fixed radiation dose monitoring instruments field calibration |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2023.06.10 |
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