{"title":"利用弗里克凝胶剂量计和蒙特卡洛模拟绘制伽马单元辐照室的剂量图。","authors":"Elham Edalatkhah, Shahryar Badiei","doi":"10.1016/j.apradiso.2024.111631","DOIUrl":null,"url":null,"abstract":"<div><div>A gamma cell unit is used for gamma irradiation of small volume samples. Due to the sample volume, there is a dose distribution, which is imperative to be known for appropriate irradiation. In this study, samples of agarose Fricke gel dosimeters were prepared for the dose mapping of the gamma cell unit available in our laboratory. To place the dosimeters at precise locations within the irradiation chamber of the gamma cell unit, a specific phantom was designed and fabricated. In this way, the dose distribution was estimated using optical absorbance measurement of the gel dosimeters. For verification, isodose curves were also obtained using Monte Carlo simulations. The results indicate that the central east-west and north-south points in the irradiation chamber have the highest and lowest dose values, respectively. The experimental and simulation ratios of the dose uniformity was calculated to be 1.53 and 1.48, respectively. The accuracy of the dosimeter performance and the system’s calibration quality are confirmed by the good agreement between the simulation and experimental results.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"217 ","pages":"Article 111631"},"PeriodicalIF":1.6000,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dose mapping of an irradiation chamber of a gamma cell unit using Fricke gel dosimeters and Monte Carlo simulation\",\"authors\":\"Elham Edalatkhah, Shahryar Badiei\",\"doi\":\"10.1016/j.apradiso.2024.111631\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A gamma cell unit is used for gamma irradiation of small volume samples. Due to the sample volume, there is a dose distribution, which is imperative to be known for appropriate irradiation. In this study, samples of agarose Fricke gel dosimeters were prepared for the dose mapping of the gamma cell unit available in our laboratory. To place the dosimeters at precise locations within the irradiation chamber of the gamma cell unit, a specific phantom was designed and fabricated. In this way, the dose distribution was estimated using optical absorbance measurement of the gel dosimeters. For verification, isodose curves were also obtained using Monte Carlo simulations. The results indicate that the central east-west and north-south points in the irradiation chamber have the highest and lowest dose values, respectively. The experimental and simulation ratios of the dose uniformity was calculated to be 1.53 and 1.48, respectively. The accuracy of the dosimeter performance and the system’s calibration quality are confirmed by the good agreement between the simulation and experimental results.</div></div>\",\"PeriodicalId\":8096,\"journal\":{\"name\":\"Applied Radiation and Isotopes\",\"volume\":\"217 \",\"pages\":\"Article 111631\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-12-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Radiation and Isotopes\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0969804324004597\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Radiation and Isotopes","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0969804324004597","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Dose mapping of an irradiation chamber of a gamma cell unit using Fricke gel dosimeters and Monte Carlo simulation
A gamma cell unit is used for gamma irradiation of small volume samples. Due to the sample volume, there is a dose distribution, which is imperative to be known for appropriate irradiation. In this study, samples of agarose Fricke gel dosimeters were prepared for the dose mapping of the gamma cell unit available in our laboratory. To place the dosimeters at precise locations within the irradiation chamber of the gamma cell unit, a specific phantom was designed and fabricated. In this way, the dose distribution was estimated using optical absorbance measurement of the gel dosimeters. For verification, isodose curves were also obtained using Monte Carlo simulations. The results indicate that the central east-west and north-south points in the irradiation chamber have the highest and lowest dose values, respectively. The experimental and simulation ratios of the dose uniformity was calculated to be 1.53 and 1.48, respectively. The accuracy of the dosimeter performance and the system’s calibration quality are confirmed by the good agreement between the simulation and experimental results.
期刊介绍：
Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment.
The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria.
Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.
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