Measurement of the 235U fission cross section relative to the standard 10B(n, α) reaction at the CERN n_TOF facility: Results for En< 2 eV.

Michalopoulou, V.; Diakaki, M.; Kyritsis, N.; Kokkoris, M.; Vlastou, R.; Mavromatakou-Karamitsiou, M.; Eleme, Z.; Patronis, N.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Babiano, V.; Bacak, M.; Balibrea-Correa, J.; Bernardes, A. P.; Berthoumieux, E.; Beyer, R.; Boromiza, M.; Bosnar, D.; Caamaño, M.; Calviño, F.; Calviani, M.; Cano-Ott, D.; Casanovas, A.; Castelluccio, D. M.; Cerutti, F.; Cescutti, G.; Chasapoglou, S.; Chiaveri, E.; Claps, G.; Colombetti, P.; Colonna, N.; Camprini, P. Console; Cortés, G.; Cortés-Giraldo, M. A.; Cosentino, L.; Cristallo, S.; Dellmann, S. F.; Di Castro, M.; Dietz, M.; Domingo-Pardo, C.; Dressler, R.; Dupont, E.; Durán, I.; Eslami, M.; Fargier, S.; Fernández-Domínguez, B.; Finocchiaro, P.; Furman, V.; Gandhi, A.; García-Infantes, F.; Gawlik-Ramięga, A.; Gervino, G.; Gilardoni, S.; González-Romero, E.; Goula, S.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Gustavino, C.; Heyse, J.; Hillman, W.; Jenkins, D. G.; Jericha, E.; Junghans, A.; Kadi, Y.; Kaperoni, K.; Koll, D.; Kopatch, Y.; Krtička, M.; Ladarescu, I.; Lederer-Woods, C.; Lerendegui-Marco, J.; Lerner, G.; Manna, A.; Martínez, T.; Masi, A.; Massimi, C.; Mastinu, P.; Mastromarco, M.; Maugeri, E. A.; Mazzone, A.; Mendoza, E.; Mengoni, A.; Milazzo, P. M.; Mucciola, R.; González, E. Musacchio; Musumarra, A.; Negret, A.; Pavón, J. A.; Pellegriti, M. G.; Pérez-Maroto, P.; De Rada Fiol, A. Pérez; Perkowski, J.; Petrone, C.; Piersanti, L.; Pirovano, E.; Olmo, J. Plaza Del; Pomp, S.; Porras, I.; Praena, J.; Quesada, J. M.; Reifarth, R.; Rochman, D.; Romanets, Y.; Rooney, A.; Rubbia, C.; Sánchez-Caballero, A.; Sabaté-Gilarte, M.; Scarpa, D.; Schillebeeckx, P.; Schumann, D.; Smith, A. G.; Sosnin, N. V.; Spelta, M.; Stamati, M. E.; Tagliente, G.; Tamburrino, A.; Tarifeño-Saldivia, A.; Tarrío, D.; Torres-Sánchez, P.; Tosi, S.; Tsiledakis, G.; Valenta, S.; Vaz, P.; Vecchio, G.; Vescovi, D.; Vlachoudis, V.; Wallner, A.; Weiss, C.; Woods, P. J.; Wright, T.; Žugec, P.

doi:10.1016/j.apradiso.2025.112063

The neutron induced fission of 235U is a very important reaction for nuclear technology applications and for the design of future systems to produce clean and safe energy. In addition, it is used as a reference reaction for neutron cross-section measurements, thus, its cross section is needed with a high accuracy over a wide energy range. In this work, the measurement for the 235U(n,f) reaction was carried out at the n_TOF facility located at CERN, at experimental area EAR-2. The standard 10B(n, α) reaction was used as reference, while a setup based on the gaseous Micromegas detectors was implemented for the detection of the fission fragments and α and 7Li-particles of the two reactions, respectively. In order to determine the thickness of the 10B sample NRA measurements were carried out at the National Center for Scientific Research “Demokritos”.