The excitation functions of 187Re(n,2n) 186m,gRe reactions

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Xiao-Long Huang, Meng-Xiao Kang, Li-Le Liu, Ji-Min Wang and Xiong-Jun Chen. The excitation functions of 187Re(n,2n) 186m,gRe reactions[J]. Chinese Physics C, 2016, 40(8): 084102. doi: 10.1088/1674-1137/40/8/084102
Xiao-Long Huang, Meng-Xiao Kang, Li-Le Liu, Ji-Min Wang and Xiong-Jun Chen. The excitation functions of 187Re(n,2n) 186m,gRe reactions[J]. Chinese Physics C, 2016, 40(8): 084102.  doi: 10.1088/1674-1137/40/8/084102 shu
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Received: 2015-08-28
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The excitation functions of 187Re(n,2n) 186m,gRe reactions

    Corresponding author: Xiao-Long Huang,
  • 1. Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China

Abstract: A new value for the emission probability of 137.144 keV γ-rays from 186gRe decay is recommended to be (9.47± 0.03)/%. Using this value the measured cross sections for 187Re(n,2n)186mRe and 187Re(n,2n)186gRe reactions around 14 MeV are analyzed, and the cross section for 187Re(n,2n)186m + gRe reaction at 14.8 MeV is (2213± 116) mb. The UNF code was adopted to calculate the cross sections for the 187Re(n,2n)186m + gRe reaction below 20 MeV, fitting to the value (2213± 116) mb at 14.8 MeV using a set of optimum neutron optical potential parameters which were obtained based on the relevant experimental data of rhenium. The isomeric cross section ratio for the 187Re(n,2n)186m,gRe reaction was analyzed using the V-H method based on nuclear statistical theory. Combining these calculated results, the excitation functions for the 187Re(n,2n)186mRe and 187Re(n,2n)186gRe reactions were obtained. The obtained results are in good agreement with the available experimental data.

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