Influence of primary fragment excitation energy and spin distributions on fission observables
Fission observables in the case of 252Cf(sf) are investigated by exploring several models involved in the excitation energy sharing and spin-parity assignment between primary fission fragments. In a first step the parameters used in the FIFRELIN Monte Carlo code “reference route" are presented:...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201816900012 |
| _version_ | 1818740160408322048 |
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| author | Litaize Olivier Thulliez Loïc Serot Olivier Chebboubi Abdelaziz Tamagno Pierre |
| author_facet | Litaize Olivier Thulliez Loïc Serot Olivier Chebboubi Abdelaziz Tamagno Pierre |
| author_sort | Litaize Olivier |
| collection | DOAJ |
| description | Fission observables in the case of 252Cf(sf) are investigated by exploring several models involved in the excitation energy sharing and spin-parity assignment between primary fission fragments. In a first step the parameters used in the FIFRELIN Monte Carlo code “reference route" are presented: two parameters for the mass dependent temperature ratio law and two constant spin cut-off parameters for light and heavy fragment groups respectively. These parameters determine the initial fragment entry zone in excitation energy and spin-parity (E*, Jπ). They are chosen to reproduce the light and heavy average prompt neutron multiplicities. When these target observables are achieved all other fission observables can be predicted. We show here the influence of input parameters on the saw-tooth curve and we discuss the influence of a mass and energy-dependent spin cut-off model on gamma-rays related fission observables. The part of the model involving level densities, neutron transmission coefficients or photon strength functions remains unchanged. |
| first_indexed | 2024-12-18T01:36:19Z |
| format | Article |
| id | doaj.art-400821f7638b40b4a9c612ba66a087d3 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T01:36:19Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-400821f7638b40b4a9c612ba66a087d32022-12-21T21:25:27ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011690001210.1051/epjconf/201816900012epjconf_theory42018_00012Influence of primary fragment excitation energy and spin distributions on fission observablesLitaize OlivierThulliez LoïcSerot OlivierChebboubi AbdelazizTamagno PierreFission observables in the case of 252Cf(sf) are investigated by exploring several models involved in the excitation energy sharing and spin-parity assignment between primary fission fragments. In a first step the parameters used in the FIFRELIN Monte Carlo code “reference route" are presented: two parameters for the mass dependent temperature ratio law and two constant spin cut-off parameters for light and heavy fragment groups respectively. These parameters determine the initial fragment entry zone in excitation energy and spin-parity (E*, Jπ). They are chosen to reproduce the light and heavy average prompt neutron multiplicities. When these target observables are achieved all other fission observables can be predicted. We show here the influence of input parameters on the saw-tooth curve and we discuss the influence of a mass and energy-dependent spin cut-off model on gamma-rays related fission observables. The part of the model involving level densities, neutron transmission coefficients or photon strength functions remains unchanged.https://doi.org/10.1051/epjconf/201816900012 |
| spellingShingle | Litaize Olivier Thulliez Loïc Serot Olivier Chebboubi Abdelaziz Tamagno Pierre Influence of primary fragment excitation energy and spin distributions on fission observables EPJ Web of Conferences |
| title | Influence of primary fragment excitation energy and spin distributions on fission observables |
| title_full | Influence of primary fragment excitation energy and spin distributions on fission observables |
| title_fullStr | Influence of primary fragment excitation energy and spin distributions on fission observables |
| title_full_unstemmed | Influence of primary fragment excitation energy and spin distributions on fission observables |
| title_short | Influence of primary fragment excitation energy and spin distributions on fission observables |
| title_sort | influence of primary fragment excitation energy and spin distributions on fission observables |
| url | https://doi.org/10.1051/epjconf/201816900012 |
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