https://doi.org/10.1051/epjconf/201714612013
Saturation of coupling of collective levels in optical model calculations of even-even actinides
1 Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, Sevilla, Spain
2 Nuclear Evaluation Lab, Joint Institute for Energy and Nuclear Research, Minsk, Belarus
3 NAPC–Nuclear Data Section, International Atomic Energy Agency, Vienna, Austria
4 Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Japan, and National Astronomical Observatory of Japan, Tokyo, Japan
a e-mail: dmart@sosny.bas-net.by
Published online: 13 September 2017
Saturation of the coupling-scheme is studied in dispersive optical model calculations of nucleon induced reactions on 238U target. Recently derived potential that is based on a soft-rotator-model (SRM) description of the collective levels of the target nucleus with volume conservation is used. It is show that calculated direct excitation cross sections of all considered non-GS bands levels are larger than the 4+ GS band level excitation, and can't be ignored in coupled-channel calculations. SRM couplings of 21 levels constitute a saturated coupling scheme that allows a precise calculation of the compound-nucleus (CN) formation cross sections up to several MeV.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
