Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process
Fission cross section of 239Pu can be seen as a sum of the “immediate" fission and “two-step" (n,γf) reactions. In the Resolved Resonance Range of the reaction cross sections, the contribution of the (n,γf) process has an impact on the determination of the partial widths magnitude involved...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2020/15/epjconf_nd2019_12002.pdf |
| _version_ | 1818365776875225088 |
|---|---|
| author | Leal-Cidoncha Esther Noguere Gilles Bouland Olivier Serot Olivier |
| author_facet | Leal-Cidoncha Esther Noguere Gilles Bouland Olivier Serot Olivier |
| author_sort | Leal-Cidoncha Esther |
| collection | DOAJ |
| description | Fission cross section of 239Pu can be seen as a sum of the “immediate" fission and “two-step" (n,γf) reactions. In the Resolved Resonance Range of the reaction cross sections, the contribution of the (n,γf) process has an impact on the determination of the partial widths magnitude involved in the Reich-Moore approximation of the R-matrix theory. The present work aims to investigate this impact by using the CONRAD code and the partial width Γγf for the (n,γf) reaction calculated by Lynn et al. [1]. A special attention will be paid to the covariance matrix obtained on νp. |
| first_indexed | 2024-12-13T22:25:39Z |
| format | Article |
| id | doaj.art-657270eeeb264baabd4e7e813b57d807 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-13T22:25:39Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-657270eeeb264baabd4e7e813b57d8072022-12-21T23:29:14ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012391200210.1051/epjconf/202023912002epjconf_nd2019_12002Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) processLeal-Cidoncha EstherNoguere Gilles0Bouland Olivier1Serot Olivier2CEA/DEN/DER/SPRC/LEPh/Cadarache centerCEA/DEN/DER/SPRC/LEPh/Cadarache centerCEA/DEN/DER/SPRC/LEPh/Cadarache centerFission cross section of 239Pu can be seen as a sum of the “immediate" fission and “two-step" (n,γf) reactions. In the Resolved Resonance Range of the reaction cross sections, the contribution of the (n,γf) process has an impact on the determination of the partial widths magnitude involved in the Reich-Moore approximation of the R-matrix theory. The present work aims to investigate this impact by using the CONRAD code and the partial width Γγf for the (n,γf) reaction calculated by Lynn et al. [1]. A special attention will be paid to the covariance matrix obtained on νp.https://www.epj-conferences.org/articles/epjconf/pdf/2020/15/epjconf_nd2019_12002.pdf |
| spellingShingle | Leal-Cidoncha Esther Noguere Gilles Bouland Olivier Serot Olivier Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process EPJ Web of Conferences |
| title | Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process |
| title_full | Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process |
| title_fullStr | Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process |
| title_full_unstemmed | Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process |
| title_short | Covariance generation for the prompt neutron multiplicity of 239Pu including the (n,γf) process |
| title_sort | covariance generation for the prompt neutron multiplicity of 239pu including the n γf process |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2020/15/epjconf_nd2019_12002.pdf |
| work_keys_str_mv | AT lealcidonchaesther covariancegenerationforthepromptneutronmultiplicityof239puincludingthengfprocess AT nogueregilles covariancegenerationforthepromptneutronmultiplicityof239puincludingthengfprocess AT boulandolivier covariancegenerationforthepromptneutronmultiplicityof239puincludingthengfprocess AT serotolivier covariancegenerationforthepromptneutronmultiplicityof239puincludingthengfprocess |