https://doi.org/10.1051/epjconf/202532210003
Evaluation of 232Th and 237Np fast neutron-induced fission cross sections by simultaneous evaluation approach
1 Department of Physics, Panjab University, Chandigarh -160014, India
2 Nuclear Data Section, Division of Physical and Chemical Sciences, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, A-1400 Wien, Austria
3 University Institute of Engineering and Technology, Panjab University, Chandigarh -160014, India
* e-mail: vidyathakur@yahoo.co.in
Published online: 14 March 2025
The neutron-induced fission cross sections for 232Th and 237Np were evaluated from 500 keV to 200 MeV and from 70 keV to 200 MeV, respectively. The experimental fission cross sections for 232Th and 237Np, as well as their ratios to the 235,238U, and 239Pu fission cross section in the EXFOR library, were reviewed and analyzed using the least-squares method. The newly published 232Th/237Np fission cross-section ratios, obtained from the time-of-flight measurements at the CERN n_TOF and CSNS Back-n facilities, have been added to the EXFOR database. The new evaluation shows that the 232Th fission cross section is systematically lower than that provided by the JENDL-5 library.
© The Authors, published by EDP Sciences, 2025
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