Speaker
Shinkuro Sakai
(Niigata University)
Description
In couple of decades, thanks to the development of the radioactive isotope beam technology, the study for neutron-rich light nuclei has become possible. The nuclei in this region often have the exotic properties, such as the neutron halo, disappearance of the canonical magic numbers, and appearance of the new magic numbers.
Recently, in the experimental study of the neutron-rich nuclei[1], the enhanced interaction cross section of 31Ne was observed. Around the neutron number N=20, the pronounced quadrupole collectivity and emergence of quadrupole deformation have been suggested experimentally and theoretically. Thus, the enhanced interaction cross section measured in 31Ne could be associated with the deformed halo structure that has been never observed.
We investigate the ground states for the Ne isotopes by solving the Skyrme-Hartree-Fock-Bogoliubov (Skyrme-HFB) equation that takes into account the pair correlation based on density functional theory. In order to describe the quadrupole deformation, we impose the axially symmetry. Also in order to describe the nuclear density extending spatially in neutron-rich nuclei, we solve the HFB equation using the THO basis. The Harmonic-Oscillator (HO) basis is not suitable for describing the density expanding spatially because its density artificially drops at large distance. But the THO basis that is obtained by transforming the variables of the HO basis has the property that its density exponentially damps at large distance, so the THO basis is reasonable for describing the neutron-rich nuclei.
[1] M.Takechi et al. Physics Letter B707(2012) 357-361
Primary author
Shinkuro Sakai
(Niigata University)
Co-author
Dr
Kenichi Yoshida
(Niigata University)
