Dr
sorlin olivier
(GANIL)
08/10/2012 16:50
Shell evolution in the neutron rich nuclei I
The present talk will present recent experimental studies aiming at
studying the spin-orbit interaction and
the evolution of the proton-neutron force when approaching the drip-line.
For the former subject, we propose to use the bubble nucleus 34Si to probe
the two-body spin orbit interaction. This study can be also used to test
the validity of mean field approaches which predict a density...
Dr
Stéphane Grévy
(CENBG)
08/10/2012 17:30
Shell evolution in the neutron rich nuclei I
The 0+2 state in 34Si has been populated at the Ganil/Lise3 facility through the -decay of a newly discovered 1+ isomer in 34Al of 26(1) ms half-life. The simultaneous detection of e+e-
pairs allowed the determination of the excitation energy E(0+2)=2719(3) keV and the half-life T1/2=19.4(7) ns, from which an electric monopole strength of rho^2(E0)=13.0(0.9)*10-3 was deduced. The 2+1 state is...
Dr
Laurent Gaudefroy
(CEA-DAM)
08/10/2012 17:50
Shell evolution in the neutron rich nuclei I
The structure of neutron rich Sulfur nuclei has been the recent subject of both experimental and theoretical studies. At N=28, experimental data interpreted within the shell model framework suggested a prolate/spherical shape coexistence. Similar interpretation has been proposed at N=27 for 43S. Recent beyond mean field calculations suggested a more complicated low-lying structure of neutron...
M.
Johannes Simonis
(TU Darmstadt)
08/10/2012 18:30
Shell evolution in the neutron rich nuclei I
In the framework of chiral effective field theory, a systematic expansion for nuclear forces, it is possible to obtain valence shell interactions for nuclear structure calculations. These are obtained by applying many-body perturbation theory (MBPT) to a renormalization group (RG) evolved low-momentum interaction. In this approach three-nucleon forces are included naturally. Normal-ordered...