Change of shell structure and magnetic moments of odd-N deformed nuclei towards the neutron drip line

Ikuko Hamamoto (1, 2)

1 Division of Mathematical Physics
2 NBI - Niels Bohr Institute [Copenhagen]

Examples of the change of neutron shell-structure in both weakly-bound and resonant neutron one-particle levels in nuclei towards the neutron drip line are exhibited. It is shown that the shell-structure change due to the weak binding may lead to the deformation of those nuclei with the neutron numbers N ≈ 8, 20, 28 and 40, which are known to be magic numbers in stable nuclei. Nuclei in the " island of inversion " are most easily and in a simple manner understood in terms of deformation. As an example of spectroscopic properties other than single-particle energies, magnetic moments of some weakly-bound possibly deformed odd-N nuclei with neutron numbers close to those traditional magic numbers are given, which are calculated using the wave function of the last odd particle in deformed Woods-Saxon potentials.

Mots clés: Physical Sciences

Ikuko Hamamoto. Change of shell structure and magnetic moments of odd-N deformed nuclei towards the neutron drip line. Journal of Physics G: Nuclear and Particle Physics, 2010, 37 (5), pp.55102. ⟨10.1088/0954-3899/37/5/055102⟩. ⟨hal-00600794⟩