New insights on fission of 235U induced by high energy neutrons from a new measurement at n_TOF

The 235U(n,f) reaction cross section was measured relative to the neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 420 MeV at the CERN n_TOF facility. Two independent detection systems were used simultaneously to extract the fission cross section. For neutron energies below 200 MeV, the present results agree within one standard deviation with both the IAEA evaluation and the data available in literature. Above 200 MeV, the comparison of model calculations to the present data reveals the need to introduce a transient time in the description of the neutron-induced fission process, allowing for simultaneous description of (n,f) and (p,f) reactions.

MANNA A;  PIROVANO Elisa;  CONSOLE CAMPRINI P;  COSENTINO Luigi;  DIETZ M.;  DUCASSE Q;  FINOCCHIARO Paolo;  LE NAOUR C.;  MANCUSI Davide;  MASSIMI C.;  MENGONI A.;  NOLTE R.;  RADEK D.;  TASSAN-GOT L.;  TERRANOVA N.;  VANNINI G.;  VENTURA A.;  ABERLE O.;  ALCAYNE V.;  AMADUCCI S.;  ANDRZEJEWSKI J.;  AUDOUIN L.;  BABIANO-SUAREZ V.;  BACAK M.;  BARBAGALLO M;  BENNETT S;  BERTHOUMIEUX E.;  BILLOWES J.;  BOSNAR D.;  BROWN A.;  BUSSO M.;  CAAMANO M.;  CABALLERO-ONTANAYA L.;  CALVINO F.;  CALVIANI M.;  CANO-OTT D.;  CASANOVAS A.;  CASTELLUCCIO D. M.;  CERUTTI F.;  CHIAVERI E.;  COLONNA N.;  CORTÉS G. P.;  CORTES-GIRALDO M. A.;  CRISTALLO S.;  DAMONE L.;  DAVIES P.;  DIAKAKI M.;  DOMINGO-PARDO C.;  DRESSLER R.;  DUPONT E.;  DURAN I.;  ELEME Z.;  FERNÁNDEZ-DOMÍNGEZ B.;  FERRARI A.;  FURMAN V.;  GÖBEL K.;  GARG R.;  GAWLIK-RAMIEGA A.;  GILARDONI S.;  GONCALVES I. F.;  GONZÁLEZ-ROMERO E.;  GUERRERO C.;  GUNSING F.;  HARADA H.;  HEINITZ S.;  HEYSE Jan;  JENKINS D. G.;  JUNGHANS A. R.;  KAEPPELER F.;  KADI Y.;  KIMURA A.;  KNAPOVA I.;  KOKKORIS M.;  KOPATCH Y.;  KRTIČKA M.;  KURTULGIL D.;  LADARESCU I.;  LEDERER-WOODS Claudia;  LEEB H.;  LERENDEGUI-MARCO J.;  LONSDALE S.;  MACINA D.;  MARTÍNEZ T.;  MASI A.;  MASTINU P.;  MASTROMARCO M.;  MAUGERI E.;  MAZZONE A.;  MENDOZA E.;  MICHALOPOULOU V.;  MILAZZO P.M.;  MINGRONE F.;  MORENO-SOTO J.;  MUSUMARRA A.;  NEGRET A.;  OGALLAR F.;  OPREA A.;  PATRONIS N.;  PAVLIK A.;  PERKOWSKI J.;  PETRONE C.;  PIERSANTI L.;  PORRAS I.;  PRAENA J.;  QUESADA J.;  RAMOS-DOVAL D.;  RAUSCHER T.;  REIFARTH R.;  ROCHMAN D.;  RUBBIA C.;  SABATE-GILARTE M;  SAXENA A.;  SCHILLEBEECKX Peter;  SCHUMANN D.;  SEKHAR A. G.;  SMITH A. G.;  SOSNIN N. V.;  SPRUNG P.;  STAMATOPOULOS A.;  TAGLIENTE G.;  TAIN J.L.;  TARIFENO-SALDIVIA A.;  THOMAS Th.;  TORRES-SÁNCHEZ P.;  TSINGANIS A.;  ULRICH J.;  URLASS S.;  VALENTA S.;  VARIALE V.;  VAZ P.;  VESCOVI D.;  VLACHOUDIS V.;  VLASTOU R.;  WALLNER A.;  WOODS P. J.;  WRIGHT T. J.;  ZUGEC P.; 

2025-07-25

ELSEVIER

JRC137191

1873-2445 (online),   

https://www.sciencedirect.com/science/article/pii/S0370269324007718?via%3Dihub,    https://publications.jrc.ec.europa.eu/repository/handle/JRC137191,   

10.1016/j.physletb.2024.139213 (online),