{"title":"Relation of Transuranium Isotope Yields as Indicator of the Achieved Neutron Fluences at the Pulse Nucleosynthesis","authors":"V. I. Lyashuk","doi":"10.1134/S1547477124702364","DOIUrl":null,"url":null,"abstract":"<p>The creation of transuranium nuclides under extremal pulsed neutron fluences (of 10<sup>24</sup> n/cm<sup>2</sup> units) of artificial nucleosynthesis is investigated by means of the dynamical model taking into account the temperature decrease at the matter expansion. An intensive (<i>n</i>, γ) activation of <sup>238</sup>U target ensures the production of neutron-rich isotopes up to <sup>257</sup>Fm. The results for isotope generation are obtained for five large scale explosive tests. The calculated yields are in good or satisfactory agreement with experiments. The relations for isotope yields depending on the neutron fluence are discussed for pairs of nuclides with atomic masses (245, 244), (246, 245), and (247, 246). The results obtained for two types of irradiated targets (<sup>238</sup>U mono-isotope and proposed variant with admixture of <sup>239</sup>Pu) indicate on the approximately linear trend relative to the neutron fluences. The strongest confirmation of the linear trend is obtained for <sup>238</sup>U target.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 2","pages":"324 - 328"},"PeriodicalIF":0.4000,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Particles and Nuclei Letters","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1547477124702364","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}
引用次数: 0
Abstract
The creation of transuranium nuclides under extremal pulsed neutron fluences (of 1024 n/cm2 units) of artificial nucleosynthesis is investigated by means of the dynamical model taking into account the temperature decrease at the matter expansion. An intensive (n, γ) activation of 238U target ensures the production of neutron-rich isotopes up to 257Fm. The results for isotope generation are obtained for five large scale explosive tests. The calculated yields are in good or satisfactory agreement with experiments. The relations for isotope yields depending on the neutron fluence are discussed for pairs of nuclides with atomic masses (245, 244), (246, 245), and (247, 246). The results obtained for two types of irradiated targets (238U mono-isotope and proposed variant with admixture of 239Pu) indicate on the approximately linear trend relative to the neutron fluences. The strongest confirmation of the linear trend is obtained for 238U target.
期刊介绍：
The journal Physics of Particles and Nuclei Letters, brief name Particles and Nuclei Letters, publishes the articles with results of the original theoretical, experimental, scientific-technical, methodological and applied research. Subject matter of articles covers: theoretical physics, elementary particle physics, relativistic nuclear physics, nuclear physics and related problems in other branches of physics, neutron physics, condensed matter physics, physics and engineering at low temperatures, physics and engineering of accelerators, physical experimental instruments and methods, physical computation experiments, applied research in these branches of physics and radiology, ecology and nuclear medicine.
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