{"title":"使用硅光电二极管的便携式放射性羽流监测仪","authors":"Yuki Tamakuma , Ryohei Yamada , Kazuki Iwaoka , Masahiro Hosoda , Tomohiro Kuroki , Hiroyuki Mizuno , Koji Yamada , Masahide Furukawa , Shinji Tokonami","doi":"10.1016/j.pisc.2019.100414","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, a portable radioactive plume monitor using a silicon photodiode was developed for the detection of a radioactive plume (e.g. <sup>131</sup>I, <sup>134</sup>Cs and <sup>137</sup>Cs) in an emergency situation. It was found that the background count rate was proportional to ambient dose equivalent rate and the detection limit for the monitor at 20<!--> <!-->μSv<!--> <!-->h<sup>−1</sup> as an ambient dose equivalent rate was evaluated to be 187<!--> <!-->Bq<!--> <!-->m<sup>−3</sup> using the ISO11929 method. These results suggest that the detection limit for the system can be decreased effectively by lead shielding with optimized thickness.</p></div>","PeriodicalId":92112,"journal":{"name":"Perspectives in science","volume":"12 ","pages":"Article 100414"},"PeriodicalIF":0.0000,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.pisc.2019.100414","citationCount":"1","resultStr":"{\"title\":\"A portable radioactive plume monitor using a silicon photodiode\",\"authors\":\"Yuki Tamakuma , Ryohei Yamada , Kazuki Iwaoka , Masahiro Hosoda , Tomohiro Kuroki , Hiroyuki Mizuno , Koji Yamada , Masahide Furukawa , Shinji Tokonami\",\"doi\":\"10.1016/j.pisc.2019.100414\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, a portable radioactive plume monitor using a silicon photodiode was developed for the detection of a radioactive plume (e.g. <sup>131</sup>I, <sup>134</sup>Cs and <sup>137</sup>Cs) in an emergency situation. It was found that the background count rate was proportional to ambient dose equivalent rate and the detection limit for the monitor at 20<!--> <!-->μSv<!--> <!-->h<sup>−1</sup> as an ambient dose equivalent rate was evaluated to be 187<!--> <!-->Bq<!--> <!-->m<sup>−3</sup> using the ISO11929 method. These results suggest that the detection limit for the system can be decreased effectively by lead shielding with optimized thickness.</p></div>\",\"PeriodicalId\":92112,\"journal\":{\"name\":\"Perspectives in science\",\"volume\":\"12 \",\"pages\":\"Article 100414\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.pisc.2019.100414\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Perspectives in science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2213020919300217\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Perspectives in science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2213020919300217","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A portable radioactive plume monitor using a silicon photodiode
In this study, a portable radioactive plume monitor using a silicon photodiode was developed for the detection of a radioactive plume (e.g. 131I, 134Cs and 137Cs) in an emergency situation. It was found that the background count rate was proportional to ambient dose equivalent rate and the detection limit for the monitor at 20 μSv h−1 as an ambient dose equivalent rate was evaluated to be 187 Bq m−3 using the ISO11929 method. These results suggest that the detection limit for the system can be decreased effectively by lead shielding with optimized thickness.
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