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A new value for the emission probability of 137.144 keV γ-rays from ~(186g)Re decay is recommended to be(9.47±0.03)/%.Using this value the measured cross sections for ~(187)Re(n,2n)~(186m)Re and ~(187)Re(n,2n)~(186g)Re reactions around 14 MeV are analyzed,and the cross section for ~(187)Re(n,2n)~(186+g)Re reaction at 14.8 MeV is(2213±116)mb.The UNF code was adopted to calculate the cross sections for the ~(187)Re(n,2n)~(186+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~(187)Re(n,2n)~(186,g)Re reaction was analyzed using the V-H method based on nuclear statistical theory.Combining these calculated results,the excitation functions for the ~(187)Re(n,2n)~(186m)Re and ~(187)Re(n,2n)~(186g)Re reactions were obtained.The obtained results are in good agreement with the available experimental data.
A new value for the emission probability of 137.144 keV γ-rays from ~ (186g) Re decay is recommended to be (9.47 ± 0.03) /%. Using this value the measured cross sections for ~ (187) Re (n, 2n) (186m) Re and ~ (187) Re (n, 2n) ~ (186g) Reactions around 14 MeV are analyzed and the cross section for ~ (187) Re (n, 2n) ~ reaction at 14.8 MeV is (2213 ± 116) mb. UNF code was taken to calculate the cross sections for the ~ (187) Re (n, 2n) ~ (186 + 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 ~ (187) Re (n, 2n) ~ (186 , g) Re reaction was analyzed using the VH method based on nuclear statistical theory. Combining these calculated results, the excitation functions for the ~ (187) Re (n, 2n) ~ (186m) Re and ~ , 2n) ~ (186g) Reacted were obtained. The obtained results are in good agreement with the available experimental d ata.