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Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility

Opened Access Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility

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Autor: Leal Cidoncha, E.
Durán, Ignacio
Paradela, Carlos
Tarrío, D.
Leong, L. S.
Tassan-Got, L.
Audouin, Laurent
Altstadt, Sebastian G.
Andrzejewski, Józef
Barbagallo, M.
Cortés Giraldo, Miguel Antonio
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2016
Publicado en: EPJ Web of Conferences, 111, 1-6.
Tipo de documento: Artículo
Resumen: Neutron-induced fission cross sections of 238U and 235U are used as standards in the fast neutron region up to 200 MeV. A high accuracy of the standards is relevant to experimentally determine other neutron reaction cross sections. Therefore, the detection efficiency should be corrected by using the angular distribution of the fission fragments (FFAD), which are barely known above 20 MeV. In addition, the angular distribution of the fragments produced in the fission of highly excited and deformed nuclei is an important observable to investigate the nuclear fission process. In order to measure the FFAD of neutron-induced reactions, a fission detection setup based on parallel-plate avalanche counters (PPACs) has been developed and successfully used at the CERN-n_TOF facility. In this work, we present the preliminary results on the analysis of new 235U(n,f) and 238U(n,f) data in the extended energy range up to 200 MeV compared to the existing experimental data.
Cita: Leal Cidoncha, E., Durán, I., Paradela, C., Tarrío, D., Leong, L.S., Tassan-Got, L.,...,Cortés Giraldo, M.A. (2016). Fission Fragment Angular Distribution measurements of 235U and 238U at CERN n-TOF facility. EPJ Web of Conferences, 111, 1-6.
Tamaño: 549.2Kb
Formato: PDF

URI: https://hdl.handle.net/11441/69687

DOI: 10.1051/epjconf/201611110002

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