Neutron-induced fission cross-section of U-233 in the energy range 0.5 < E-n < 20 MeV
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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 α-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 ≈ 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.
CitationCalviño, F. [et al.]. Neutron-induced fission cross-section of U-233 in the energy range 0.5 < E-n < 20 MeV. "European physical journal A", Gener 2011, vol. 47, núm. 2, p. 1-7.