Neutron inelastic scattering off 232Th: measurements and beyond
Gamma production cross sections have been obtained for 81 transitions in 232Th from (n,n’g), 11 in 231Th from (n,2ng) and 7 in 230Th from (n,3ng) reactions using prompt gamma spectroscopy. Incident neutron energies were determined using the neutron time-of-flight technique. Sources of uncertainty have been examined and their correlations have been computed. Total uncertainty on cross sections ranges from 4 to 20%. Obtained cross sections are in agreement with prior experiments, but are not well reproduced by the TALYS-1.8 reaction code using default parameters. During analysis, discrepancies between our findings and the Evaluated Nuclear Structure Data File (ENSDF) were noted. Future work related to the present experiment includes: improving theoretical models, quantifying the influence of the 232Th inelastic neutron cross section on reactor core parameters, and conducting additional measurements.
PARTY E.;
BORCEA Catalin;
DESSAGNE P.;
DOLIGEZ Xavier;
HENNING G.;
KERVENO M.;
NEGRET A.;
NYMAN Markus;
OLACEL A.;
PLOMPEN Arjan;
2019-06-27
EDP Sciences
JRC115061
2100 014X (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC115061,
10.1051/epjconf/201921103005 (online),
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