Abstract
Neutron induced the (n, 2n) reaction cross sections of platinum isotopes (190Pt, 192Pt, 196Pt and 198Pt) were well measured by the neutron activation and off-line gamma-ray technique around neutron energy of 14 MeV. During the irradiating time, the flux fluctuation of generating neutron was monitored by accompanying α-particle, while the cross section-ratio of 90Zr (n, 2n)89Zr to 93Nb(n, 2n)92mNb reactions were used to determine the neutron energies, which varied with the emission angle. As a result, the cross sections of 190Pt (n, 2n)189Pt, 192Pt (n, 2n)191Pt, 196Pt (n, 2n)195mPt, 198Pt (n, 2n)197mPt and 198Pt (n, 2n)197gPt reactions have been deduced at En = 14.1 ± 0.2 MeV, 14.5 ± 0.2 MeV and 14.7 ± 0.1 MeV, respectively. Meanwhile, the comparisons between this work and the literature date were given, as well as evaluated nuclear data and simulation data (ENDF/B-VIII.0, JEFF 3.3, ROSFOND-2010, JENDL/AD-2017 and Talys 1.9). The results shows an agreement with literature work as a whole, except the 196Pt (n, 2n)195mPt reaction.
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