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- Title
Detailed Investigations of Neutron-Neutron Angular Correlations in Slow-Neutron-Induced Fission of <sup>233</sup>U, <sup>235</sup>U, and <sup>239</sup>Pu.
- Authors
Guseva, I. S.; Gagarski, A. M.; Sokolov, V. E.; Petrov, G. A.; Vorobyev, A. S.; Val’sky, G. V.; Zavarukhina, T. A.
- Abstract
An experiment devoted to studying neutron-neutron angular correlations in the slow-neutroninduced fission of 233U, 235U and 239Pu nuclei was performed. The experimentally determined angular dependence of the number of neutron-neutron coincidences was compared with the results of a Monte Carlo simulation for various values of the neutron-detection threshold in the range between 490 and 2080 keV. It was found that the experimental angular distributions in question can be described well under the assumption that 2% to 5% of all prompt fission neutrons are emitted isotropically in the laboratory frame. Probably, such neutrons can be interpreted as so-called scission neutrons directly associated with the nuclear-rupture instant. Energy distributions of this component were also obtained from the present analysis.
- Subjects
SLOW neutrons; NUCLEAR fission; NEUTRONS; COULOMB functions; SCISSION (Chemistry)
- Publication
Physics of Atomic Nuclei, 2018, Vol 81, Issue 4, p447
- ISSN
1063-7788
- Publication type
Article
- DOI
10.1134/S1063778818040051