Abstract.
The neutron-induced fission cross-section of 233U has been measured at the CERN n_TOF facility relative to the standard fission cross-section of 235U between 0.5 and 20MeV. The experiment was performed with a fast ionization chamber for the detection of the fission fragments and to discriminate against \( \alpha\) -particles from the natural radioactivity of the samples. The high instantaneous flux and the low background of the n_TOF facility result in data with uncertainties of \( \approx\) 3% , which were found in good agreement with previous experiments. The high quality of the present results allows to improve the evaluation of the 233U (n,f) cross-section and, consequently, the design of energy systems based on the Th/U cycle.
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The n_TOF Collaboration., Belloni, F., Calviani, M. et al. Neutron-induced fission cross-section of 233U in the energy range 0.5 < En < 20 MeV. Eur. Phys. J. A 47, 2 (2011). https://doi.org/10.1140/epja/i2011-11002-y
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DOI: https://doi.org/10.1140/epja/i2011-11002-y