Speaker
Serge Franchoo
(Institut de Physique Nucleaire (IPN))
Description
The replacement of the N=20 spherical shell gap in nuclei of the island of
inversion by the N=14,16 gaps can be explained by the tensor monopole
interaction between the proton and neutron Fermi levels. The next step in
understanding the evolution of shell structure is to measure the strengh of this
interaction, which is present
throughout the nuclear chart. The ideal tool for this are transfer reactions where
single-particle energies and spectroscopic factors can be extracted.
While accurate determination of single-particle strengths remains out of reach
for the more exotic isotopes, it would be particularly interesting to explore the
less exotic 28Mg(d,p)29Mg reaction in inverse kinematics. This reaction will be
possible at Rex-Isolde after the energy upgrade to 5 MeV/u, necessary to
ensure the conditions of a direct reaction mechanism. A new highly segmented
silicon-pad detector called Trace that could be used for this kind of experiments
is under development at Legnaro and Orsay.
Author
Serge Franchoo
(Institut de Physique Nucleaire (IPN))
