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

The 235 U(n, f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n_TOF facility, extending the upper limit of the only previous measurement in the literature by more than 200 MeV. For neutron energies below 200 MeV, our results agree within one standard deviation with data in literature. Above 200 MeV, the comparison of model calculations to our data indicates the need to introduce a transient time in neutron-induced fission to allow the simultaneous description of (n, f) and (p, f) reactions.

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Journal
Physics Letters B
Published
2024-12-20
DOI
https://doi.org/10.1016/j.physletb.2024.139213
Citations
2
Primary Topic
Nuclear Physics and Applications
Type
article
Field-Weighted Citation Impact
1.22

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

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article en
2 citations

Abstract

The 235 U(n, f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n_TOF facility, extending the upper limit of the only previous measurement in the literature by more than 200 MeV. For neutron energies below 200 MeV, our results agree within one standard deviation with data in literature. Above 200 MeV, the comparison of model calculations to our data indicates the need to introduce a transient time in neutron-induced fission to allow the simultaneous description of (n, f) and (p, f) reactions.

Physics Letters BVol. 860
Université Paris-Sud (FR), National Agency for New Technologies, Energy and Sustainable Economic Development (IT), Physikalisch-Technische Bundesanstalt (DE), Centre National de la Recherche Scientifique (FR), Istituto Nazionale di Fisica Nucleare (IT), National Technical University of Athens (GR), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), CEA Grenoble (FR), University of Catania (IT), Osservatorio astronomico di Bologna (IT), Institut de Physique (FR), CEA Cadarache (FR), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud (IT), Direction des Energies (FR), CEA Paris-Saclay (FR), Institut National de Physique Nucléaire et de Physique des Particules (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (ES), European Organization for Nuclear Research (CH), University of Bologna (IT), University of Edinburgh (GB)
CERN, Istituto Nazionale di Fisica Nucleare, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council
Affordable and clean energy
Openalex Percentile: Top 19%
Nuclear Physics and Applications
1.22
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