The excitation functions of <sup>187</sup>Re(n,2n) <sup>186m,g</sup>Re reactions

Xiao-Long Huang; Meng-Xiao Kang; Li-Le Liu; Ji-Min Wang; Xiong-Jun Chen

doi:10.1088/1674-1137/40/8/084102

Chinese Physics C> 2016, Vol. 40> Issue(8) : 084102 DOI: 10.1088/1674-1137/40/8/084102

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

1.
Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China

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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 + g}Re 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 + g}Re 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.
- excitation function ,
- isomeric cross section ,
- 187Re(n,2n)186m,gRe reaction

References

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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

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2015-08-28

Available Online: 2016-08-05

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 + g}Re 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 + g}Re 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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The excitation functions of ¹⁸⁷Re(n,2n) ^186m,gRe reactions

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