Paul Fallon
(Lawrence Berkeley Laboratory)
20/02/2013, 14:00
The two-proton knockout reaction from 42Si was used to produce 40Mg at the RI Beam Factory, RIKEN Nishina Center. The status and results of this experiment will be presented in connection with the goal to measure gamma-ray decays from excited states and using the direct reaction cross-section to derive information on the structure of 42Si and 40Mg. Possible steps towards future experiments...
Masafumi Matsushita
(Center for Nuclear Study, University of Tokyo)
20/02/2013, 14:20
Excited states in the nuclei 38,40,42Si have been studied using in-beam gamma-ray spectroscopy following multi-nucleon removal reactions to investigate the systematics of excitation energies along the $Z=14$ isotopic chain.
Experiment have been performed at RIBF with high intensity 48Ca beam emplyed to produce the secondary beams of 40S and 44S. The DALI2 gamma-ray spectrometer have been...
David Steppenbeck
(University of Tokyo)
20/02/2013, 14:40
The structures of neutron-rich nuclei around Ca-54 were investigated using in-beam gamma-ray spectroscopy via nucleon knockout reactions with Sc-55 and Ti-56 radioactive beams at the RIBF. This was the first experimental campaign at the facility to use a Zn-70 primary beam at 345 MeV/u. In this presentation a summary of the results and experiment details will be given, and future prospects for...
Volker Werner
(Yale University)
20/02/2013, 15:00
Isotopes below Nickel about N=40 are known to exhibit enhanced
collectivity, instead of signatures of an N=40 sub-shell closure which
is evident in 68Ni. The enhancement of collectivity has been seen in
Fe and Cr isotopes in the region through the lowering of 2+1 energies
as well as rise in B(E2) excitation strengths, mainly due to an early
population of the neutron g9/2 orbital. We...
Simon Boissinot
(CEA Saclay)
20/02/2013, 15:20
In the context of nuclear structure evolution with isospin towards the drip-line and local magic numbers phenomena, gamma-spectroscopy of nuclei located in the neutron-rich region around 54Ca is intensively investigated. Indeed, shell-model calculations using the GXPF1 interaction have indicated a new sub-shell closure at N=34. However, this is not confirmed experimentally by the 2+ excitation...
