elastic and inelastic scattering of neutrons on 238u nucleus
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ID: 207674
2014
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Abstract
Advanced modelling of neutron induced reactions on the 238U nucleus is aimed at improving our knowledge of neutron scattering. Capture and fission channels are well constrained by available experimental data and neutron standard evaluation. A focus of this contribution is on elastic and inelastic scattering cross sections. The employed nuclear reaction model includes – a new rotational-vibrational dispersive optical model potential coupling the low-lying collective bands of vibrational character observed in even-even actinides; – the Engelbrecht-Weidenmüller transformation allowing for inclusion of compound-direct interference effects; – and a multi-humped fission barrier with absorption in the secondary well described within the optical model for fission. Impact of the advanced modelling on elastic and inelastic scattering cross sections including angular distributions and emission spectra is assessed both by comparison with selected microscopic experimental data and integral criticality benchmarks including measured reaction rates (e.g. JEMIMA, FLAPTOP and BIG TEN). Benchmark calculations provided feedback to improve the reaction modelling. Improvement of existing libraries will be discussed.
| Reference Key |
r.2014epjelastic
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|---|---|
| Authors | ;Capote R.;Trkov A.;Sin M.;Herman M.W.;Soukhovitskiĩ E.Sh. |
| Journal | utilitas mathematica |
| Year | 2014 |
| DOI |
10.1051/epjconf/20136900008
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