D. Brinkevich, S. Brinkevich, H. Kiyavitskaya, A. Kiyko
{"title":"BETA-RADIATING RADIONUCLIDES FORMED IN A WATER TARGET OF A COMMERCIAL CYCLOTRON","authors":"D. Brinkevich, S. Brinkevich, H. Kiyavitskaya, A. Kiyko","doi":"10.46646/sakh-2021-2-248-252","DOIUrl":null,"url":null,"abstract":"The accumulation of в-emitting radionuclides during irradiation of a liquid target of the Cyclone 18/9 HC commercial cyclotron and the production of radiopharmaceuticals (RP) based on 18F was studied by liquid scintillation spectroscopy. It is shown that with prolonged use of the target in the в-spectra of regenerated water [18O] H2O and ready-made RP [18F] NaF, in addition to the maximum due to tritium, a number of maxima appear in both the low-and high-energy parts of the spectrum. Storage for 3 months leads to a significant transformation of the spectra - the intensity of the low-energy wing of the regenerated water spectrum decreases sharply, the maximum in the 300 channel region disappears, while the intensity of the high-energy wing decreases not so dramatically. It was found that the tritium content in the regenerated water can be reliably estimated only after storage for 3 months.","PeriodicalId":385455,"journal":{"name":"SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY Part 2","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY Part 2","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.46646/sakh-2021-2-248-252","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The accumulation of в-emitting radionuclides during irradiation of a liquid target of the Cyclone 18/9 HC commercial cyclotron and the production of radiopharmaceuticals (RP) based on 18F was studied by liquid scintillation spectroscopy. It is shown that with prolonged use of the target in the в-spectra of regenerated water [18O] H2O and ready-made RP [18F] NaF, in addition to the maximum due to tritium, a number of maxima appear in both the low-and high-energy parts of the spectrum. Storage for 3 months leads to a significant transformation of the spectra - the intensity of the low-energy wing of the regenerated water spectrum decreases sharply, the maximum in the 300 channel region disappears, while the intensity of the high-energy wing decreases not so dramatically. It was found that the tritium content in the regenerated water can be reliably estimated only after storage for 3 months.
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