Shell evolution in exotic nuclei
Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
2 Nishina Center, RIKEN, Hirosawa, Wako-shi, Saitama, 351-0198, Japan
3 National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan, 48824, USA
Corresponding author: email@example.com
In this talk, I will overview recent studies on the evolution of the shell structure in stable and exotic nuclei, and will show results of related shell-model and mean-field calculations. The primary cause of the shell evolution is shown to be the tensor force. The robust mechanism and some examples will be presented. Such examples include the disappearance of existing magic numbers and the appearance of new ones. The nuclear magic numbers have been believed, since Mayer and Jensen, to be constants as 2, 8, 20, 28, 50, ...This turned out to be changed, once we entered the regime of exotic nuclei. This shell evolution develops at many places on the nuclear chart in various forms. For instance, the Island of Inversion picture has been changed considerably.
© EDP Sciences, Springer-Verlag, 2008