Isao Tanihata
Physics Division, Argonne National Laboratory
A New View of Nuclear Structure: Studies with Radioactive Ion Beams in Japan
Since the end of �80ies, RIB (Radioactive Isotope Beams or Rare Isotope
Beams) has been providing new tools for study of nuclear structure and
nuclear astrophysics. The �common � properties of nuclei, which is established
though experimental studies with light particles and heavy-ions, had to be
changed by those RIB studies. The discovered modifications of structures are not
only for details of the structure but in basic properties such as the density
distribution and the shell structure. For example the decoupling of proton and
neutron density distribution in nuclei was not expected before but now it is
commonly observed in nuclei far from the stability line. The decoupling brings
a large change in potential view of nuclei and also reveal hidden residual
interactions in stable nuclei. New view of the nuclear structure is surely
necessary now.
In the present talk, I introduce these new structures and properties: such as
neutron and proton skins, neutron halo, and change of shells. Also a recent
example of studies to search for a proton halo in 17Ne will be
presented. The present RIB facility and newly coming RIBF will also be briefly
introduced.