https://doi.org/10.1140/epjp/s13360-023-03912-7
Regular Article
Experimental cross sections in fission of natural uranium induced by a neutron spectrum of 12.4-MeV average energy
1
, Guilherand-Granges, France
2
iThemba Laboratories for Accelerator Based Sciences, PO Box 722, Somerset West, South Africa
3
CEA/DRF/IRFU-CNRS/IN2P3, GANIL, BP 55027, Bd. H. Becquerel, 14076, Caen, Cedex 5, France
4
CSC-IT Center for Science Ltd, P.O.Box 405, Keilaranta 14, 02101, Espoo, Finland
5
Department of Physics, University of Jyväskylä, P.O.Box 35, 40014, Jyväskylä, Finland
Received:
19
December
2022
Accepted:
17
March
2023
Published online:
31
March
2023
Yields of fission products are essential for designing Radioactive Ion Beam facilities and extracting cross section data to refine reaction models. This work reports the results of irradiations of natural uranium targets with a continuous spectrum of fast neutrons. A rapid transport system has been used to bring the targets in front of two segmented Clover detectors operated in coincidence. Decay 
-ray spectroscopy of the fission products has allowed for cross sections to be obtained in 61 mass chains, either as independent or as cumulative for the chain. Interpolation versus mass number together with the assumption of a Gaussian distribution of isobars enable cross sections to be evaluated in nearly 80 mass chains. The measurement demonstrates the power of the detectors for twofold – events following 
-decay and indicates that new fission product decay data could be obtained with a dedicated set up.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
