Fast neutron induced fission neutron spectra below the incident energy
Fission neutron spectra from neutron induced fission in 235 U and 239 Pu for energies below that of the neutron inducing fission have been measured. The spectra were obtained for 1.5 MeV and 2.5 MeV incident neutrons. Previous accelerator-based fission neutron spectra measurements have been seriousl...
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| container_title | Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712 |
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| creator | Woodring, M. L. Egan, J. E. Kegel, G. H. R. DeSimone, D. J. |
| description | Fission neutron spectra from neutron induced fission in
235
U and
239
Pu for energies below that of the neutron inducing fission have been measured. The spectra were obtained for 1.5 MeV and 2.5 MeV incident neutrons. Previous accelerator-based fission neutron spectra measurements have been seriously complicated by time-correlated gamma-rays and scattered neutrons from the fission sample. Three barium fluoride detectors were placed near the sample undergoing induced fission and used to identify fission gamma rays. A coincidence of fission gamma-rays was used to gate a liquid scintillator neutron detector to distinguish fission events from other events. The fission neutron spectral shape and average energy measured in this experiment compare well to both previous measurements and prior theory and also suggest a dependence on incident neutron energy and mass of the fissioning nucleus. An overview of the experiment, a discussion of the results, and the importance of this work to homeland security are given. |
| doi_str_mv | 10.1007/s10967-008-0621-y |
| format | Article |
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235
U and
239
Pu for energies below that of the neutron inducing fission have been measured. The spectra were obtained for 1.5 MeV and 2.5 MeV incident neutrons. Previous accelerator-based fission neutron spectra measurements have been seriously complicated by time-correlated gamma-rays and scattered neutrons from the fission sample. Three barium fluoride detectors were placed near the sample undergoing induced fission and used to identify fission gamma rays. A coincidence of fission gamma-rays was used to gate a liquid scintillator neutron detector to distinguish fission events from other events. The fission neutron spectral shape and average energy measured in this experiment compare well to both previous measurements and prior theory and also suggest a dependence on incident neutron energy and mass of the fissioning nucleus. An overview of the experiment, a discussion of the results, and the importance of this work to homeland security are given.</description><identifier>ISSN: 0236-5731</identifier><identifier>EISSN: 1588-2780</identifier><identifier>DOI: 10.1007/s10967-008-0621-y</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Chemistry ; Chemistry and Materials Science ; Diagnostic Radiology ; Hadrons ; Heavy Ions ; Inorganic Chemistry ; Nuclear Chemistry ; Nuclear Physics ; Physical Chemistry</subject><ispartof>Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712, 2008-06, Vol.276 (3), p.707-712</ispartof><rights>Springer Science+Business Media, LLC. 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c345t-4de4f4ae44011ef5b3c931ccce1a5d262a9d56fff612d30691ff725d520fa4ba3</citedby><cites>FETCH-LOGICAL-c345t-4de4f4ae44011ef5b3c931ccce1a5d262a9d56fff612d30691ff725d520fa4ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10967-008-0621-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10967-008-0621-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,881,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/947920$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Woodring, M. L.</creatorcontrib><creatorcontrib>Egan, J. E.</creatorcontrib><creatorcontrib>Kegel, G. H. R.</creatorcontrib><creatorcontrib>DeSimone, D. J.</creatorcontrib><creatorcontrib>Pacific Northwest National Lab. (PNNL), Richland, WA (United States)</creatorcontrib><title>Fast neutron induced fission neutron spectra below the incident energy</title><title>Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712</title><addtitle>J Radioanal Nucl Chem</addtitle><description>Fission neutron spectra from neutron induced fission in
235
U and
239
Pu for energies below that of the neutron inducing fission have been measured. The spectra were obtained for 1.5 MeV and 2.5 MeV incident neutrons. Previous accelerator-based fission neutron spectra measurements have been seriously complicated by time-correlated gamma-rays and scattered neutrons from the fission sample. Three barium fluoride detectors were placed near the sample undergoing induced fission and used to identify fission gamma rays. A coincidence of fission gamma-rays was used to gate a liquid scintillator neutron detector to distinguish fission events from other events. The fission neutron spectral shape and average energy measured in this experiment compare well to both previous measurements and prior theory and also suggest a dependence on incident neutron energy and mass of the fissioning nucleus. An overview of the experiment, a discussion of the results, and the importance of this work to homeland security are given.</description><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Diagnostic Radiology</subject><subject>Hadrons</subject><subject>Heavy Ions</subject><subject>Inorganic Chemistry</subject><subject>Nuclear Chemistry</subject><subject>Nuclear Physics</subject><subject>Physical Chemistry</subject><issn>0236-5731</issn><issn>1588-2780</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWKs_wNt68RadJPuVoxSrQsGLnkOanbQp22xNskj_vSmrV0_DDM87zDyE3DJ4YADNY2Qg64YCtBRqzujxjMxY1baUNy2ckxlwUdOqEeySXMW4AwDZtmJGlksdU-FxTGHwhfPdaLArrIvR5f5vHg9oUtDFGvvhu0hbzKRxHfpUoMewOV6TC6v7iDe_dU4-l88fi1e6en95WzytqBFllWjZYWlLjWUJjKGt1sJIwYwxyHTV8Zpr2VW1tbZmvBNQS2Ztw6uu4mB1udZiTu6mvUNMTkXjEpqtGbzP9ylZNpJDZu4n5hCGrxFjUnsXDfa99jiMUQnBJc9aMsgm0IQhxoBWHYLb63BUDNTJqpqsqmxVnayqY87wKRMz6zcY1G4Yg88__xP6AbCae7Y</recordid><startdate>20080601</startdate><enddate>20080601</enddate><creator>Woodring, M. L.</creator><creator>Egan, J. E.</creator><creator>Kegel, G. H. R.</creator><creator>DeSimone, D. J.</creator><general>Springer Netherlands</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20080601</creationdate><title>Fast neutron induced fission neutron spectra below the incident energy</title><author>Woodring, M. L. ; Egan, J. E. ; Kegel, G. H. R. ; DeSimone, D. J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c345t-4de4f4ae44011ef5b3c931ccce1a5d262a9d56fff612d30691ff725d520fa4ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Diagnostic Radiology</topic><topic>Hadrons</topic><topic>Heavy Ions</topic><topic>Inorganic Chemistry</topic><topic>Nuclear Chemistry</topic><topic>Nuclear Physics</topic><topic>Physical Chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Woodring, M. L.</creatorcontrib><creatorcontrib>Egan, J. E.</creatorcontrib><creatorcontrib>Kegel, G. H. R.</creatorcontrib><creatorcontrib>DeSimone, D. J.</creatorcontrib><creatorcontrib>Pacific Northwest National Lab. (PNNL), Richland, WA (United States)</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Woodring, M. L.</au><au>Egan, J. E.</au><au>Kegel, G. H. R.</au><au>DeSimone, D. J.</au><aucorp>Pacific Northwest National Lab. (PNNL), Richland, WA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fast neutron induced fission neutron spectra below the incident energy</atitle><jtitle>Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712</jtitle><stitle>J Radioanal Nucl Chem</stitle><date>2008-06-01</date><risdate>2008</risdate><volume>276</volume><issue>3</issue><spage>707</spage><epage>712</epage><pages>707-712</pages><issn>0236-5731</issn><eissn>1588-2780</eissn><abstract>Fission neutron spectra from neutron induced fission in
235
U and
239
Pu for energies below that of the neutron inducing fission have been measured. The spectra were obtained for 1.5 MeV and 2.5 MeV incident neutrons. Previous accelerator-based fission neutron spectra measurements have been seriously complicated by time-correlated gamma-rays and scattered neutrons from the fission sample. Three barium fluoride detectors were placed near the sample undergoing induced fission and used to identify fission gamma rays. A coincidence of fission gamma-rays was used to gate a liquid scintillator neutron detector to distinguish fission events from other events. The fission neutron spectral shape and average energy measured in this experiment compare well to both previous measurements and prior theory and also suggest a dependence on incident neutron energy and mass of the fissioning nucleus. An overview of the experiment, a discussion of the results, and the importance of this work to homeland security are given.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10967-008-0621-y</doi><tpages>6</tpages></addata></record> |
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| ispartof | Journal of Radioanalytical and Nuclear Chemistry, 276(3):707-712, 2008-06, Vol.276 (3), p.707-712 |
| issn | 0236-5731 1588-2780 |
| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Chemistry Chemistry and Materials Science Diagnostic Radiology Hadrons Heavy Ions Inorganic Chemistry Nuclear Chemistry Nuclear Physics Physical Chemistry |
| title | Fast neutron induced fission neutron spectra below the incident energy |
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