Calculation of fission product yields for uranium isotopes by using a semi-empirical model
. A semi-empirical model for calculating the fission product yields (FPY) of neutron induced fissions of uranium isotopes is developed, where the FPY are assumed to be proportional to the level density of a microcanonical ensemble of a compound nucleus at the fission barrier. The fission height that...
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creator | Lee, Jounghwa Gil, Choong-Sup Lee, Young-Ouk Park, Tae-Sun Hong, Seung-Woo |
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A semi-empirical model for calculating the fission product yields (FPY) of neutron induced fissions of uranium isotopes is developed, where the FPY are assumed to be proportional to the level density of a microcanonical ensemble of a compound nucleus at the fission barrier. The fission height that determines the level density is modeled as a sum of two parts; a symmetric part and an asymmetric part. The origin of the symmetric part can be attributed to the liquid drop model, and that of the asymmetric part to the shell effect in the fission products. Our model has essentially just seven adjustable parameters. They are fitted to the ENDF/B-VII.1 fission yield data of various uranium isotopes for the mass number ranging from 232 to 238 induced by thermal and fast (500 keV) neutrons. Five of the resulting parameters are nearly independent of the mass number of the uranium isotopes. Two parameters which change with the mass number of the uranium isotopes can be expressed as a linear function of the mass number. The FPY calculated from our model are found to be in a good agreement with both the ENDF and experimental data. |
doi_str_mv | 10.1140/epja/i2018-12607-2 |
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A semi-empirical model for calculating the fission product yields (FPY) of neutron induced fissions of uranium isotopes is developed, where the FPY are assumed to be proportional to the level density of a microcanonical ensemble of a compound nucleus at the fission barrier. The fission height that determines the level density is modeled as a sum of two parts; a symmetric part and an asymmetric part. The origin of the symmetric part can be attributed to the liquid drop model, and that of the asymmetric part to the shell effect in the fission products. Our model has essentially just seven adjustable parameters. They are fitted to the ENDF/B-VII.1 fission yield data of various uranium isotopes for the mass number ranging from 232 to 238 induced by thermal and fast (500 keV) neutrons. Five of the resulting parameters are nearly independent of the mass number of the uranium isotopes. Two parameters which change with the mass number of the uranium isotopes can be expressed as a linear function of the mass number. The FPY calculated from our model are found to be in a good agreement with both the ENDF and experimental data.</description><identifier>ISSN: 1434-6001</identifier><identifier>EISSN: 1434-601X</identifier><identifier>DOI: 10.1140/epja/i2018-12607-2</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Atomic properties ; Density ; Fission products ; Hadrons ; Heavy Ions ; Isotopes ; Linear functions ; Mathematical models ; Nuclear Fusion ; Nuclear Physics ; Nuclei (nuclear physics) ; Parameters ; Particle and Nuclear Physics ; Physics ; Physics and Astronomy ; Regular Article - Theoretical Physics ; Uranium ; Uranium isotopes</subject><ispartof>The European physical journal. A, Hadrons and nuclei, 2018, Vol.54 (10), p.1-10, Article 173</ispartof><rights>SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018</rights><rights>Copyright Springer Science & Business Media 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c356t-9b1ff66c6d65d04a1db1f34b0fd30f57e71057387404c0ecaebfd0d2f35b5a5a3</citedby><cites>FETCH-LOGICAL-c356t-9b1ff66c6d65d04a1db1f34b0fd30f57e71057387404c0ecaebfd0d2f35b5a5a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1140/epja/i2018-12607-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1140/epja/i2018-12607-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Lee, Jounghwa</creatorcontrib><creatorcontrib>Gil, Choong-Sup</creatorcontrib><creatorcontrib>Lee, Young-Ouk</creatorcontrib><creatorcontrib>Park, Tae-Sun</creatorcontrib><creatorcontrib>Hong, Seung-Woo</creatorcontrib><title>Calculation of fission product yields for uranium isotopes by using a semi-empirical model</title><title>The European physical journal. A, Hadrons and nuclei</title><addtitle>Eur. Phys. J. A</addtitle><description>.
A semi-empirical model for calculating the fission product yields (FPY) of neutron induced fissions of uranium isotopes is developed, where the FPY are assumed to be proportional to the level density of a microcanonical ensemble of a compound nucleus at the fission barrier. The fission height that determines the level density is modeled as a sum of two parts; a symmetric part and an asymmetric part. The origin of the symmetric part can be attributed to the liquid drop model, and that of the asymmetric part to the shell effect in the fission products. Our model has essentially just seven adjustable parameters. They are fitted to the ENDF/B-VII.1 fission yield data of various uranium isotopes for the mass number ranging from 232 to 238 induced by thermal and fast (500 keV) neutrons. Five of the resulting parameters are nearly independent of the mass number of the uranium isotopes. Two parameters which change with the mass number of the uranium isotopes can be expressed as a linear function of the mass number. The FPY calculated from our model are found to be in a good agreement with both the ENDF and experimental data.</description><subject>Atomic properties</subject><subject>Density</subject><subject>Fission products</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Isotopes</subject><subject>Linear functions</subject><subject>Mathematical models</subject><subject>Nuclear Fusion</subject><subject>Nuclear Physics</subject><subject>Nuclei (nuclear physics)</subject><subject>Parameters</subject><subject>Particle and Nuclear Physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Regular Article - Theoretical Physics</subject><subject>Uranium</subject><subject>Uranium isotopes</subject><issn>1434-6001</issn><issn>1434-601X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEUhYMoWKt_wFXAdezNYzKdpRS1QsGNgrgJmTxKysxkTGYW_fdOW9Gdq3u4nHPu5UPolsI9pQIWrt_pRWBAl4QyCSVhZ2hGBRdEAv04_9VAL9FVzjsAEKySM_S50o0ZGz2E2OHosQ85H2Sfoh3NgPfBNTZjHxMek-7C2OKQ4xB7l3G9x2MO3RZrnF0biGv7kILRDW6jdc01uvC6ye7mZ87R-9Pj22pNNq_PL6uHDTG8kAOpauq9lEZaWVgQmtppwUUN3nLwRelKCkXJl6UAYcAZ7WpvwTLPi7rQheZzdHfqnX7-Gl0e1C6OqZtOKkbpkouqgmpysZPLpJhzcl71KbQ67RUFdWCoDgzVkaE6MlRsCvFTKE_mbuvSX_U_qW_gHngR</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>Lee, Jounghwa</creator><creator>Gil, Choong-Sup</creator><creator>Lee, Young-Ouk</creator><creator>Park, Tae-Sun</creator><creator>Hong, Seung-Woo</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2018</creationdate><title>Calculation of fission product yields for uranium isotopes by using a semi-empirical model</title><author>Lee, Jounghwa ; Gil, Choong-Sup ; Lee, Young-Ouk ; Park, Tae-Sun ; Hong, Seung-Woo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c356t-9b1ff66c6d65d04a1db1f34b0fd30f57e71057387404c0ecaebfd0d2f35b5a5a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Atomic properties</topic><topic>Density</topic><topic>Fission products</topic><topic>Hadrons</topic><topic>Heavy Ions</topic><topic>Isotopes</topic><topic>Linear functions</topic><topic>Mathematical models</topic><topic>Nuclear Fusion</topic><topic>Nuclear Physics</topic><topic>Nuclei (nuclear physics)</topic><topic>Parameters</topic><topic>Particle and Nuclear Physics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Regular Article - Theoretical Physics</topic><topic>Uranium</topic><topic>Uranium isotopes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Jounghwa</creatorcontrib><creatorcontrib>Gil, Choong-Sup</creatorcontrib><creatorcontrib>Lee, Young-Ouk</creatorcontrib><creatorcontrib>Park, Tae-Sun</creatorcontrib><creatorcontrib>Hong, Seung-Woo</creatorcontrib><collection>CrossRef</collection><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Jounghwa</au><au>Gil, Choong-Sup</au><au>Lee, Young-Ouk</au><au>Park, Tae-Sun</au><au>Hong, Seung-Woo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Calculation of fission product yields for uranium isotopes by using a semi-empirical model</atitle><jtitle>The European physical journal. A, Hadrons and nuclei</jtitle><stitle>Eur. Phys. J. A</stitle><date>2018</date><risdate>2018</risdate><volume>54</volume><issue>10</issue><spage>1</spage><epage>10</epage><pages>1-10</pages><artnum>173</artnum><issn>1434-6001</issn><eissn>1434-601X</eissn><abstract>.
A semi-empirical model for calculating the fission product yields (FPY) of neutron induced fissions of uranium isotopes is developed, where the FPY are assumed to be proportional to the level density of a microcanonical ensemble of a compound nucleus at the fission barrier. The fission height that determines the level density is modeled as a sum of two parts; a symmetric part and an asymmetric part. The origin of the symmetric part can be attributed to the liquid drop model, and that of the asymmetric part to the shell effect in the fission products. Our model has essentially just seven adjustable parameters. They are fitted to the ENDF/B-VII.1 fission yield data of various uranium isotopes for the mass number ranging from 232 to 238 induced by thermal and fast (500 keV) neutrons. Five of the resulting parameters are nearly independent of the mass number of the uranium isotopes. Two parameters which change with the mass number of the uranium isotopes can be expressed as a linear function of the mass number. The FPY calculated from our model are found to be in a good agreement with both the ENDF and experimental data.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1140/epja/i2018-12607-2</doi><tpages>10</tpages></addata></record> |
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subjects | Atomic properties Density Fission products Hadrons Heavy Ions Isotopes Linear functions Mathematical models Nuclear Fusion Nuclear Physics Nuclei (nuclear physics) Parameters Particle and Nuclear Physics Physics Physics and Astronomy Regular Article - Theoretical Physics Uranium Uranium isotopes |
title | Calculation of fission product yields for uranium isotopes by using a semi-empirical model |
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