Dr
Przemyslaw ADRICH
(NSCL)
03/04/2008, 09:50
Invited Presentation
Gamma-rays emitted from bound excited states carry valuable information on the structure of the nucleus. At present, in-beam gamma-ray spectroscopy with fast beams combined with a set of robust experimental techniques contributes in many ways to new discoveries and insights into the structure of nuclei far from stability.
An overview of in-beam gamma-ray experimental techniques, illustrated...
Prof.
Yukinori Sakuragi
(Department of Physics, Osaka City University)
03/04/2008, 10:20
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
\author{
S. Okamoto$^{1}$, T. Furumoto$^{1}$, M. Takashina$^{2}$ and Y.Sakuragi$^{1,3}$,
}
\affiliation{
$^{1}$Department of Physics, Osaka City University, Osaka 558-8585, Japan\\
$^{2}$Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan\\
$^{3}$RIKEN Nishina Center, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
}
The electromagnetic probes such...
Mrs
Patricia Roussel-Chomaz
(GANIL)
03/04/2008, 10:55
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
We have studied the spectroscopy of neutron rich nuclei in the region of N=20 with a new method, using different reactions to produce the same nucleus. A composite secondary beam formed by several nuclei in the region of the island of inversion was produced by fragmentation at GANIL with the SISSI device, at an energy close to 30 MeV/nucleon. It was transported to the VAMOS spectrometer beam...
Dr
S. Takeuchi
03/04/2008, 11:15
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
Mr
Megumi NIIKURA
(CNS, University of Tokyo)
03/04/2008, 11:35
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
In nuclei near closed shell, shell structure can be studied by looking
at high-spin states. At excited states with certain amount of spins,
these nuclei need to promote nucleons across the shell gap in order to
gain larger angular momentum. Such core excitation across the N=28
shell gap have been previously discussed in even-even nuclei of N=28
isotones both experimentally and...
Dr
Nori Aoi
(RIKEN Nishina Center)
03/04/2008, 16:40
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
Mr
Hiroshi Oba
(Graduate School of Science and Technology, Niigata University)
03/04/2008, 17:00
Exotic deformation / new collective motion at low and high spin
Presentation
Recent experiments on the neutron rich Cr isotopes with N=36,38 suggest a new region of quadrupole deformation[1][2]. In this presentation we analyse the deformation mechanism in this region by means of a deformed Skyrme-Hartree-Fock-Bogoliubov code based on a 2D mesh representation in the cylindrical coordinate system assuming axial symmetric deformations[3].
It is found that when we adopt...
Dr
Masayuki Yamagami
(RIKEN Nishina Center)
03/04/2008, 17:20
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
We discuss the unique role of pairing correlations for low-lying rotational excitations in neutron rich Be, Mg and Cr isotopes. Appearance of di-neutron correlation due to the neutron skin and continuum effects, and its influence on the moment of inertia are investigated. We also point out the necessity of the isospin density dependence in the pairing effective force; the usual isoscalar...
Prof.
Takaharu Otsuka
(CNS / Univ. of Tokyo)
05/04/2008, 13:20
Collectivities and shell effects in neutron/proton-rich nuclei
Serge Franchoo
(IPN Orsay)
05/04/2008, 13:50
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
The ground state and first excited 2+ state in proton-rich 36Ca have been studied at Ganil by gamma-ray spectroscopy of one-neutron knock-out reactions from deeply bound states in 37Ca at intermediate energy. The 2+ energy in 36Ca was found to be consistent with a sizeable N=16 gap similar to the Z=16 one observed in the mirror nucleus 36S. Partial cross-sections and momentum distributions of...
Dr
Thorsten Kroell
(TU Muenchen)
05/04/2008, 14:10
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
Experiments with exotic nuclei are the essential tool to investigate nuclear
structure far-off stability. In particular, our research programme focuses on
the study of the evolution of magic shell closures. These may change or even
(dis)appear globally as function of isospin or locally because of a variation
of the residual interactions.
An important instrument for our studies...
Mr
Nobuo HINOHARA
(Kyoto University)
05/04/2008, 14:30
Collectivities and shell effects in neutron/proton-rich nuclei
Presentation
We have investigated the oblate-prolate shape coexistence/mixing
phenomena in proton-rich nuclei around 68Se and 72Kr
by means of the adiabatic self-consistent collective coordinate
(ASCC) method.
For 68Se and 72Kr, it is shown that the collective path extracted
from the TDHFB phase space of large dimensions runs approximately
along the valley that exists in the triaxially deformed...
