W. Vaalburg, A.M.J. Paans, J.W. Terpstra, T. Wiegman, K. Dekens, A. Rijskamp, M.G. Woldring
{"title":"用76Se(p,2n)75Br反应快速回收可重复使用金属硒化靶中的75Br","authors":"W. Vaalburg, A.M.J. Paans, J.W. Terpstra, T. Wiegman, K. Dekens, A. Rijskamp, M.G. Woldring","doi":"10.1016/0020-708X(85)90256-X","DOIUrl":null,"url":null,"abstract":"<div><p>A number of metal selenides were investigated as target material for the production of <sup>75</sup>Br by the <sup>76</sup>Se(p,2n)<sup>75</sup>Br reaction. Ag<sub>2</sub>Se, CuAgSe, and Cu<sub>2</sub>Se met the rqquirements for an economical and fast production procedure. These selenides were found to be stable during bombardment with 1–4 μA 28 MeV protons (beam dimension 0.4 cm<sup>2</sup>) and at the dry distillation temperature of 1473 K. A target system was developed for radiobromine production with a 7 μA 28−22 MeV proton beam on Cu<sub>2</sub>Se. At EOB the calculated thick target yield is 1.59 GBq/μAh (43 mCi/μAh) and the radionuclidic purity is 98.6%. The radiobromine was separated from Cu<sub>2</sub>Se by dry distillation at 1473 K and collected for 80–95% on platinum wool pretreated with CaCl<sub>2</sub>. Radiochemical analysis showed the radiobromine to be Br<sup>−</sup> for 95% and BrO<sub>3</sub><sup>−</sup> for 5%. The total loss of selenide after irradiation and distillation was found to be less than 0.1%.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 961-964"},"PeriodicalIF":0.0000,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90256-X","citationCount":"24","resultStr":"{\"title\":\"Fast recovery by dry distillation of 75Br induced in reusable metal selenide targets via the 76Se(p,2n)75Br reaction\",\"authors\":\"W. Vaalburg, A.M.J. Paans, J.W. Terpstra, T. Wiegman, K. Dekens, A. Rijskamp, M.G. Woldring\",\"doi\":\"10.1016/0020-708X(85)90256-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A number of metal selenides were investigated as target material for the production of <sup>75</sup>Br by the <sup>76</sup>Se(p,2n)<sup>75</sup>Br reaction. Ag<sub>2</sub>Se, CuAgSe, and Cu<sub>2</sub>Se met the rqquirements for an economical and fast production procedure. These selenides were found to be stable during bombardment with 1–4 μA 28 MeV protons (beam dimension 0.4 cm<sup>2</sup>) and at the dry distillation temperature of 1473 K. A target system was developed for radiobromine production with a 7 μA 28−22 MeV proton beam on Cu<sub>2</sub>Se. At EOB the calculated thick target yield is 1.59 GBq/μAh (43 mCi/μAh) and the radionuclidic purity is 98.6%. The radiobromine was separated from Cu<sub>2</sub>Se by dry distillation at 1473 K and collected for 80–95% on platinum wool pretreated with CaCl<sub>2</sub>. Radiochemical analysis showed the radiobromine to be Br<sup>−</sup> for 95% and BrO<sub>3</sub><sup>−</sup> for 5%. The total loss of selenide after irradiation and distillation was found to be less than 0.1%.</p></div>\",\"PeriodicalId\":22517,\"journal\":{\"name\":\"The International journal of applied radiation and isotopes\",\"volume\":\"36 12\",\"pages\":\"Pages 961-964\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1985-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0020-708X(85)90256-X\",\"citationCount\":\"24\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The International journal of applied radiation and isotopes\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0020708X8590256X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The International journal of applied radiation and isotopes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0020708X8590256X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Fast recovery by dry distillation of 75Br induced in reusable metal selenide targets via the 76Se(p,2n)75Br reaction
A number of metal selenides were investigated as target material for the production of 75Br by the 76Se(p,2n)75Br reaction. Ag2Se, CuAgSe, and Cu2Se met the rqquirements for an economical and fast production procedure. These selenides were found to be stable during bombardment with 1–4 μA 28 MeV protons (beam dimension 0.4 cm2) and at the dry distillation temperature of 1473 K. A target system was developed for radiobromine production with a 7 μA 28−22 MeV proton beam on Cu2Se. At EOB the calculated thick target yield is 1.59 GBq/μAh (43 mCi/μAh) and the radionuclidic purity is 98.6%. The radiobromine was separated from Cu2Se by dry distillation at 1473 K and collected for 80–95% on platinum wool pretreated with CaCl2. Radiochemical analysis showed the radiobromine to be Br− for 95% and BrO3− for 5%. The total loss of selenide after irradiation and distillation was found to be less than 0.1%.
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