Systematical nucleon-induced optical model analysis for medium and heavy nuclei with coupled-channel frameworkS. Kunieda1, S. Chiba1, K. Shibata1, A. Ichihara1 and E.Sh. Sukhovitskii2
1 Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaragi-ken 319-1195, Japan
2 Joint Institute for Energy and Nuclear Research, 220109 Minsk-Sosny, Belarus
Published online: 21 May 2008
Optical model analyses have been carried out for nucleon-induced reactions on medium and heavy nuclei from 1 keV up to 200 MeV. The coupled-channels method based on the rigid-rotator model has been employed as an initial approach. It has been found that the coupled-channels analyses are indispensable to obtain a global formulation of optical potential. In addition, the coupled-channels calculation based on the soft-rotator model has been applied to analyses for various even-even fission product isotopes. They reproduced measured cross sections better than the rigid-rotator model in many cases. Though the latter is our ongoing study, we show the advantage of coupled-channels calculations and the applicability of the soft-rotator model.
© CEA 2008