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Prompt neutrons from fission of 252Cf and 235U
Measurements have been made of the n-n angular correlation for neutrons emitted in spontaneous fission of ²⁵²Cf and thermal-neutron- induced fission of ²³⁵U. The dependence of the angular correlation on the neutron detection threshold energy was investigated. These measurements and other experimenta...
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| Format: | Thesis |
| Language: | English |
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Department of Physics
2016
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| _version_ | 1867613258912890880 |
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| access_status_str | Open Access |
| author | Pringle, John Stephen |
| author2 | Brooks, F D |
| author_browse | Brooks, F D Pringle, John Stephen |
| author_facet | Brooks, F D Pringle, John Stephen |
| author_sort | Pringle, John Stephen |
| collection | Thesis |
| description | Measurements have been made of the n-n angular correlation for neutrons emitted in spontaneous fission of ²⁵²Cf and thermal-neutron- induced fission of ²³⁵U. The dependence of the angular correlation on the neutron detection threshold energy was investigated. These measurements and other experimental data on the fission spectrum and the neutron angular distribution are compared with Monte Carlo calculations based on the evaporation model. It is apparent that a model assuming isotropic evaporation of all neutrons from the moving fragments cannot adequately explain the observed distributions. No evidence was found favouring the emission of a fraction of the neutrons isotropically at scission, or during the fragment acceleration period. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/18130 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:17.409Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Physics |
| publisherStr | Department of Physics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/18130 Prompt neutrons from fission of 252Cf and 235U Pringle, John Stephen Brooks, F D Physics Nuclear Physics Measurements have been made of the n-n angular correlation for neutrons emitted in spontaneous fission of ²⁵²Cf and thermal-neutron- induced fission of ²³⁵U. The dependence of the angular correlation on the neutron detection threshold energy was investigated. These measurements and other experimental data on the fission spectrum and the neutron angular distribution are compared with Monte Carlo calculations based on the evaporation model. It is apparent that a model assuming isotropic evaporation of all neutrons from the moving fragments cannot adequately explain the observed distributions. No evidence was found favouring the emission of a fraction of the neutrons isotropically at scission, or during the fragment acceleration period. 2016-03-21T19:26:48Z 2016-03-21T19:26:48Z 1977 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/18130 eng application/pdf Department of Physics Faculty of Science University of Cape Town |
| spellingShingle | Physics Nuclear Physics Pringle, John Stephen Prompt neutrons from fission of 252Cf and 235U |
| thesis_degree_str | Doctoral |
| title | Prompt neutrons from fission of 252Cf and 235U |
| title_full | Prompt neutrons from fission of 252Cf and 235U |
| title_fullStr | Prompt neutrons from fission of 252Cf and 235U |
| title_full_unstemmed | Prompt neutrons from fission of 252Cf and 235U |
| title_short | Prompt neutrons from fission of 252Cf and 235U |
| title_sort | prompt neutrons from fission of 252cf and 235u |
| topic | Physics Nuclear Physics |
| url | http://hdl.handle.net/11427/18130 |
| work_keys_str_mv | AT pringlejohnstephen promptneutronsfromfissionof252cfand235u |