{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1871428067484199168.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3390/jne4030039"}}],"dc:title":[{"@value":"Feasibility Study on Production of High-Purity Rhenium-185 by Nuclear Transmutation of Natural Tantalum"}],"description":[{"notation":[{"@value":"<jats:p>Rhenium-186 (Re-186) has attracted attention as a medical isotope. The feasibility of producing Re-185, the raw material for Re-186, using a fast reactor was evaluated using a continuous energy Monte Carlo code. The irradiation of natural tantalum (Ta) in the fast reactor can produce Re-185 with an isotopic purity of 99%. A two-step irradiation process with different moderators was found to improve the production rate of Re-185. Specifically, this can be achieved by using zirconium hydride (ZrH1.7) as a moderator in the first transmutation process from natural Ta to tungsten (W), and then zirconium deuteride (ZrD1.7) as a moderator in the second transmutation process from W to Re-185. Due to the two-step irradiation, the production rate of Re-185 from Ta can be increased up to a maximum of 470 times compared with irradiation without a moderator, and 2.3 g of Re-185 can be obtained from 1571 g of Ta in 1 year of irradiation. The proposed isotope production method is a new method that is different from the conventional electromagnetic enrichment process.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1891428067484199169","@type":"Researcher","foaf:name":[{"@value":"Yuki Tanoue"}]},{"@id":"https://cir.nii.ac.jp/crid/1891428067484199168","@type":"Researcher","foaf:name":[{"@value":"Masaki Ozawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1891428067484199170","@type":"Researcher","foaf:name":[{"@value":"Tsugio Yokoyama"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"26734362"}],"prism:publicationName":[{"@value":"Journal of Nuclear Engineering"}],"dc:publisher":[{"@value":"MDPI AG"}],"prism:publicationDate":"2023-09-01","prism:volume":"4","prism:startingPage":"625","prism:endingPage":"633"},"dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=rhenium-186","dc:title":"rhenium-186"},{"@id":"https://cir.nii.ac.jp/all?q=tantalum","dc:title":"tantalum"},{"@id":"https://cir.nii.ac.jp/all?q=tungsten","dc:title":"tungsten"},{"@id":"https://cir.nii.ac.jp/all?q=rhenium-185","dc:title":"rhenium-185"},{"@id":"https://cir.nii.ac.jp/all?q=TK9001-9401","dc:title":"TK9001-9401"},{"@id":"https://cir.nii.ac.jp/all?q=Nuclear%20engineering.%20Atomic%20power","dc:title":"Nuclear engineering. Atomic power"},{"@id":"https://cir.nii.ac.jp/all?q=fast%20reactor","dc:title":"fast reactor"},{"@id":"https://cir.nii.ac.jp/all?q=transmutation","dc:title":"transmutation"}],"dataSourceIdentifier":[{"@type":"OPENAIRE","@value":"doi_dedup___::65f189b2baad60d7cea109c5f834909e"}]}