Shell Model as a Unified View of Nuclear Structure

Session

Shell evolution of neutron rich nuclei I

8 oct. 2012, 16:50

Amphi Gruenwald (Institut Pluridisciplinaire Hubert Curien)

59. Study of spin-orbit interaction and nuclear forces at the drip line

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...

2. Unveilling the intruder deformed 0+2 state in 34Si

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...

12. Weakly deformed, axial and triaxial configurations in neutron rich Sulfur isotopes

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...

18. Three-nucleon forces at neutron-rich extremes

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...