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Measurement of Cross Sections for the Fission of the 239Pu and 240Pu Nuclei by 0.3–500-MeV Neutrons.

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Title: Measurement of Cross Sections for the Fission of the 239Pu and 240Pu Nuclei by 0.3–500-MeV Neutrons.
Authors: Vorobyev, A. S.1 (AUTHOR) vorobyev_as@pnpi.nrcki.ru, Shcherbakov, O. A.1 (AUTHOR), Tiagelskaia, A. M.1 (AUTHOR), Olkhovich, N. M.1 (AUTHOR), Barabanov, A. L.2,3 (AUTHOR), Kuz'mina, T. E.4 (AUTHOR)
Source: JETP Letters. Jun2026, Vol. 123 Issue 11, p729-741. 13p.
Subjects: Nuclear cross sections, Plutonium, Nuclear reactions, Nuclear counters, Time-of-flight spectrometry, Neutron irradiation
Abstract: Cross sections for the fission of 239Pu and 240Pu by 0.3–500-MeV neutrons have been measured on the time-of-flight spectrometer of the GNEIS neutron complex at the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute. Fission fragments have been detected using low-pressure position-sensitive multiwire proportional counters. The 239Pu(n, f) and 240Pu(n, f) fission cross sections have been measured relative to the 235U(n, f) fission cross section. The obtained data are compared with the results of previous experimental works, as well as with cross sections from various libraries of evaluated data. [ABSTRACT FROM AUTHOR]
Copyright of JETP Letters is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: Measurement of Cross Sections for the Fission of the <superscript>239</superscript>Pu and <superscript>240</superscript>Pu Nuclei by 0.3–500-MeV Neutrons.
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  Data: Cross sections for the fission of 239Pu and 240Pu by 0.3–500-MeV neutrons have been measured on the time-of-flight spectrometer of the GNEIS neutron complex at the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute. Fission fragments have been detected using low-pressure position-sensitive multiwire proportional counters. The 239Pu(n, f) and 240Pu(n, f) fission cross sections have been measured relative to the 235U(n, f) fission cross section. The obtained data are compared with the results of previous experimental works, as well as with cross sections from various libraries of evaluated data. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of JETP Letters is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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      – TitleFull: Measurement of Cross Sections for the Fission of the 239Pu and 240Pu Nuclei by 0.3–500-MeV Neutrons.
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              Text: Jun2026
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