Large-scale shell model calculations for exotic nucleiE. Caurier1, F. Nowacki1 and A. Poves2
1 Institut de Recherches Subatomiques, IN2P3-CNRS-Université Louis Pasteur, F-67037 Strasbourg Cedex 2, France
2 Departamento de Física Teórica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
(Received: 21 March 2002 / Published online: 31 October 2002)
Recent shell model calculations for the neutron-rich nuclei around the magic numbers N=20, N=28 and N=40 are reviewed. We stress two points: i) The crucial role played by the monopole part of the effective interaction that determines the evolution of the spherical mean field. In particular, the reduction in the quasiparticle gaps at the magic numbers can erode or even erase the shell closures. ii) The rich variety of structures that can be found in these situations, with coexisting deformed and spherical states, rapid changes of behaviour with N or Z, and the massive occurrence of intruder states as ground states.
21.60.Cs - Shell model.
21.60.-n - Nuclear-structure models and methods.
21.10.Hw - Spin, parity, and isobaric spin.
21.10.Ky - Electromagnetic moments.
© Società Italiana di Fisica, Springer-Verlag 2002