Search for scission neutrons using specific angular correlations in {sup 235}U fission induced by slow polarized neutrons
The experimental data concerning scission (or prescission) neutrons are very contradictory-the relative part of these neutrons in the prompt fission neutrons varies from 1 to 35% owing to arbitrary assumptions made in different analyses. To solve this problem, we have used a new alternative method t...
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| Veröffentlicht in: | Physics of atomic nuclei 2006-07, Vol.69 (7) |
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| container_title | Physics of atomic nuclei |
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| creator | Danilyan, G. V. Fedorov, A. V. Krakhotin, V. A. Pavlov, V. S. Brakhman, E. V. Karpikhin, I. L. Korobkina, E. I. Golub, R. Wilpert, T. Russina, M. V. |
| description | The experimental data concerning scission (or prescission) neutrons are very contradictory-the relative part of these neutrons in the prompt fission neutrons varies from 1 to 35% owing to arbitrary assumptions made in different analyses. To solve this problem, we have used a new alternative method to search for the scission neutrons. We have found the left-right asymmetry of prompt-fission-neutron (PFN) emission caused by sp-wave interference in the entrance channel of the reaction and the P-odd asymmetry of the PFN emission caused by parity nonconservation at the exit channel of the fission process. Both effects cannot reside in PFN evaporated by excited fission fragments. The scission (or prescission) neutrons are responsible for these effects. |
| doi_str_mv | 10.1134/S1063778806070106 |
| format | Article |
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V. ; Fedorov, A. V. ; Krakhotin, V. A. ; Pavlov, V. S. ; Brakhman, E. V. ; Karpikhin, I. L. ; Korobkina, E. I. ; Golub, R. ; Wilpert, T. ; Russina, M. V.</creator><creatorcontrib>Danilyan, G. V. ; Fedorov, A. V. ; Krakhotin, V. A. ; Pavlov, V. S. ; Brakhman, E. V. ; Karpikhin, I. L. ; Korobkina, E. I. ; Golub, R. ; Wilpert, T. ; Russina, M. V.</creatorcontrib><description>The experimental data concerning scission (or prescission) neutrons are very contradictory-the relative part of these neutrons in the prompt fission neutrons varies from 1 to 35% owing to arbitrary assumptions made in different analyses. To solve this problem, we have used a new alternative method to search for the scission neutrons. We have found the left-right asymmetry of prompt-fission-neutron (PFN) emission caused by sp-wave interference in the entrance channel of the reaction and the P-odd asymmetry of the PFN emission caused by parity nonconservation at the exit channel of the fission process. Both effects cannot reside in PFN evaporated by excited fission fragments. The scission (or prescission) neutrons are responsible for these effects.</description><identifier>ISSN: 1063-7788</identifier><identifier>EISSN: 1562-692X</identifier><identifier>DOI: 10.1134/S1063778806070106</identifier><language>eng</language><publisher>United States</publisher><subject>ANGULAR CORRELATION ; ASYMMETRY ; EMISSION ; FISSION ; FISSION FRAGMENTS ; FISSION NEUTRONS ; INTERFERENCE ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; P INVARIANCE ; POLARIZED PRODUCTS ; URANIUM 235</subject><ispartof>Physics of atomic nuclei, 2006-07, Vol.69 (7)</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/21076033$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Danilyan, G. V.</creatorcontrib><creatorcontrib>Fedorov, A. V.</creatorcontrib><creatorcontrib>Krakhotin, V. A.</creatorcontrib><creatorcontrib>Pavlov, V. S.</creatorcontrib><creatorcontrib>Brakhman, E. V.</creatorcontrib><creatorcontrib>Karpikhin, I. L.</creatorcontrib><creatorcontrib>Korobkina, E. I.</creatorcontrib><creatorcontrib>Golub, R.</creatorcontrib><creatorcontrib>Wilpert, T.</creatorcontrib><creatorcontrib>Russina, M. V.</creatorcontrib><title>Search for scission neutrons using specific angular correlations in {sup 235}U fission induced by slow polarized neutrons</title><title>Physics of atomic nuclei</title><description>The experimental data concerning scission (or prescission) neutrons are very contradictory-the relative part of these neutrons in the prompt fission neutrons varies from 1 to 35% owing to arbitrary assumptions made in different analyses. To solve this problem, we have used a new alternative method to search for the scission neutrons. We have found the left-right asymmetry of prompt-fission-neutron (PFN) emission caused by sp-wave interference in the entrance channel of the reaction and the P-odd asymmetry of the PFN emission caused by parity nonconservation at the exit channel of the fission process. Both effects cannot reside in PFN evaporated by excited fission fragments. The scission (or prescission) neutrons are responsible for these effects.</description><subject>ANGULAR CORRELATION</subject><subject>ASYMMETRY</subject><subject>EMISSION</subject><subject>FISSION</subject><subject>FISSION FRAGMENTS</subject><subject>FISSION NEUTRONS</subject><subject>INTERFERENCE</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>P INVARIANCE</subject><subject>POLARIZED PRODUCTS</subject><subject>URANIUM 235</subject><issn>1063-7788</issn><issn>1562-692X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNo1j09LAzEQxYMoWKsfwNuA59XMZjfJHqX4DwoeWsFbSSdJG1mSstlFqvjd3WI9vZn3Zn7wGLtGfosoqrsFcimU0ppLrvi4nLAJ1rIsZFO-n47zGBeH_Jxd5PzBOaKu-YTtF850tAWfOsgUcg4pQnRD36WYYcghbiDvHAUfCEzcDK3pgFLXudb04XATInznYQelqH_ewB8RIdqBnIX1HnKbPmGXxsfwNTr_8Et25k2b3dVRp2z5-LCcPRfz16eX2f28SI3uC6-Ntd4q1F5bbGpbeou1UGtD5CR5VQtjK49SOykqsqZBz1GUledaqXUjpuzmD5tyH1Zjxd7RllKMjvpViVxJLoT4BSa9YlQ</recordid><startdate>20060715</startdate><enddate>20060715</enddate><creator>Danilyan, G. 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V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Search for scission neutrons using specific angular correlations in {sup 235}U fission induced by slow polarized neutrons</atitle><jtitle>Physics of atomic nuclei</jtitle><date>2006-07-15</date><risdate>2006</risdate><volume>69</volume><issue>7</issue><issn>1063-7788</issn><eissn>1562-692X</eissn><abstract>The experimental data concerning scission (or prescission) neutrons are very contradictory-the relative part of these neutrons in the prompt fission neutrons varies from 1 to 35% owing to arbitrary assumptions made in different analyses. To solve this problem, we have used a new alternative method to search for the scission neutrons. We have found the left-right asymmetry of prompt-fission-neutron (PFN) emission caused by sp-wave interference in the entrance channel of the reaction and the P-odd asymmetry of the PFN emission caused by parity nonconservation at the exit channel of the fission process. 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| ispartof | Physics of atomic nuclei, 2006-07, Vol.69 (7) |
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| subjects | ANGULAR CORRELATION ASYMMETRY EMISSION FISSION FISSION FRAGMENTS FISSION NEUTRONS INTERFERENCE NUCLEAR PHYSICS AND RADIATION PHYSICS P INVARIANCE POLARIZED PRODUCTS URANIUM 235 |
| title | Search for scission neutrons using specific angular correlations in {sup 235}U fission induced by slow polarized neutrons |
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