A. A. Artyukhov, V. A. Zagryadskiy, I. M. Kravets, T. M. Kuznetsova, T. Yu. Malamut, V. I. Novikov, A. V. Ryzhkov, I. I. Skobelin, T. A. Udalova
{"title":"A Laboratory Setup for Increasing the Technological Yield of 123I from a 124Xe Target under Proton Bombardment","authors":"A. A. Artyukhov, V. A. Zagryadskiy, I. M. Kravets, T. M. Kuznetsova, T. Yu. Malamut, V. I. Novikov, A. V. Ryzhkov, I. I. Skobelin, T. A. Udalova","doi":"10.1134/S0020441223060015","DOIUrl":null,"url":null,"abstract":"<p>One of the methods for obtaining <sup>123</sup>I is the bombardment of gaseous <sup>124</sup>Xe with protons, in which nuclear reactions of production and decay of <sup>123</sup>Xe and <sup>123</sup>I isotopes occur. After irradiation, the gas phase is condensed from the target into a special “decay container,” in which the target isotope <sup>123</sup>I is produced and accumulated during <sup>123</sup>Xe decay. The amount of <sup>123</sup>I produced in the target and deposited on its walls during the irradiation is comparable to the amount of <sup>123</sup>I obtained in the decay container. A laboratory setup has been created and a process technology for extracting <sup>123</sup>I from the walls of the target has been developed to increase the total yield of <sup>123</sup>I. Organic solvents (acetone and diethyl ether) are used for this purpose. The proportion of the <sup>123</sup>I extracted by washing off from the walls of the aluminum target is at least 84%. The loss during subsequent vacuum distillation of solvents does not exceed 5%. After vacuum distillation, the extracted <sup>123</sup>I is dissolved in NaOH. At this stage, the efficiency of <sup>123</sup>I washing-off with a 0.01 M NaOH solution is at least 95%. Nevertheless, even taking into account these losses, the proposed method makes it possible to additionally extract the <sup>123</sup>I radionuclide from the target in an amount equal to or greater than the activity of the <sup>123</sup>I produced using the existing technology.</p>","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Instruments and Experimental Techniques","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0020441223060015","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
One of the methods for obtaining 123I is the bombardment of gaseous 124Xe with protons, in which nuclear reactions of production and decay of 123Xe and 123I isotopes occur. After irradiation, the gas phase is condensed from the target into a special “decay container,” in which the target isotope 123I is produced and accumulated during 123Xe decay. The amount of 123I produced in the target and deposited on its walls during the irradiation is comparable to the amount of 123I obtained in the decay container. A laboratory setup has been created and a process technology for extracting 123I from the walls of the target has been developed to increase the total yield of 123I. Organic solvents (acetone and diethyl ether) are used for this purpose. The proportion of the 123I extracted by washing off from the walls of the aluminum target is at least 84%. The loss during subsequent vacuum distillation of solvents does not exceed 5%. After vacuum distillation, the extracted 123I is dissolved in NaOH. At this stage, the efficiency of 123I washing-off with a 0.01 M NaOH solution is at least 95%. Nevertheless, even taking into account these losses, the proposed method makes it possible to additionally extract the 123I radionuclide from the target in an amount equal to or greater than the activity of the 123I produced using the existing technology.
期刊介绍:
Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.