Dipole strength in 80Se below the neutron-separation energy for the nuclear transmutation of 79Se
1 Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
2 JEIN institute for fundamental science, NPO Einstein, Kyoto, 606-8317, Japan
3 Graduate School of Medicine, Hokkaido University, 060-8638 Sapporo, Japan
4 Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
5 Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA
6 RIKEN Nishina Center, Wako, Saitama 351-0198, Japan
7 Technische Universität Dresden, 01062 Dresden, Germany
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Published online: 13 September 2017
The γ-ray strength function (γSF) in 80Se is an important parameter to estimate the neutron-capture cross section of 79Se which is one of the long-lived fission products (LLFPs). Until now, the γSF method was applied for 80Se only above the neutron-separation energy (Sn) and the evaluated 79Se(n,γ) cross section has an instability caused by the GSF below Sn. We studied the dipole-strength distribution of 80Se in a photon-scattering experiment using bremsstrahlung produced by an electron beam of an energy of 11.5 MeV at the linear accelerator ELBE at HZDR. The present photoabsorption cross section of 80Se was combined with results of (γ,n) experiments and are compared with predictions usinmg the TALYS code. We also estimated the 79Se(n,γ) cross sections and compare them with TALYS predictionms and earlier work by other groups.
© The Authors, published by EDP Sciences, 2017
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