EURICA Workshop

RIBF can produce very neutron rich nuclei in the A=90-110 region with unprecedented intensities. The structural evolution in this mass region is particularly rich since substantial energy gaps between various deformation driving Nilsson orbitals exist and configurations of different shape compete at low excitation energies. At the same time the properties of these nuclei are relevant for...

Recent data on Ge and Se isotopes above the N=50 shell closure has led to the discussion of a weakening of the Z=28 proton shell, based on relatively low first excited 2+ energies in the N=52 Ge and Se isotones. Further discussion relates to the possible emergence of a new neutron sub-shell closure at N=58, based on the evolution of single particle energies in N=51 isotones. Both effects would...

In the region of the neutron rich iron isotopes, around the r-process starting point, only few spectroscopic information is available. We aim to determine life times, beta and isomeric decays and built first level schemes in 70-72Fe and around. We plan to use the unique combination of the high beam intensities available at RIKEN together with BigRIPS-ZeroDegree spectrometer and the EURICA and...

Study of doubly-closed-shell and neighboring nuclei provides great opportunities for testing of nuclear models and expanding our knowledge of nucleosynthesis processes. Especially, the region around 78Ni (Z=28, N=50) has attracted great interests because of its extreme neutron-to-proton ratio in the region far from the valley of stability. Despite of a great deal of theoretical activity...

We propose to investigate the beta decay of the neutron rich N=52 nucleus 81Cu for EURICA campaign, in order to observe for the first time the low lying excited states in the N=51 isotone 81Zn. N=51 odd isotones constitute the best cases to study the neutron single particle effective energy evolution towards 78Ni. The study of 81Zn level sequence will provide critical data to predict the...

Neutron-rich zirconium (Z=40) nuclei lie in the midst of a shape-changing region with many models predicting a transition from spherical to prolate/oblate coexistence at N~60. Measurements of the mean-square charge radii in the zirconium chain [Ca02] indicate a shape transition at N=59. In order to further investigate the low-lying structure of more-exotic systems, an experiment was...