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.

中文翻译：

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铂同位素上 14 MeV 中子引起的 (n,2n) 反应的横截面测量

摘要 在14 MeV中子能量附近，通过中子活化和离线伽马射线技术对铂同位素（190Pt、192Pt、196Pt和198Pt）的(n, 2n)反应截面进行了很好的测量。在辐照期间，通过伴随α粒子监测产生中子的通量波动，同时利用90Zr(n,2n)89Zr与93Nb(n,2n)92mNb反应的截面比来确定中子能量，随发射角的变化而变化。结果，190Pt (n, 2n)189Pt, 192Pt (n, 2n)191Pt, 196Pt (n, 2n)195mPt, 198Pt (n, 2n)197mPt 和 198Pt (n, 2n)198Pt 反应的截面为 (n, 2n)17g2Pt分别为 En = 14.1 ± 0.2 MeV、14.5 ± 0.2 MeV 和 14.7 ± 0.1 MeV。同时，给出了这项工作与文献日期的比较，以及评估的核数据和模拟数据（ENDF/B-VIII.0、JEFF 3.3、ROSFOND-2010、JENDL/AD-2017 和 Talys 1.9）。结果表明，除 196Pt (n, 2n)195mPt 反应外，总体上与文献工作一致。