Deformation around Neutron-Rich Cr Isotopes in Axially Symmetric Skyrme-Hatree-Fock-Bogoliubov Method
Abstract
We analyse the deformation mechanism in neutron-rich Cr, Fe and Ti isotopes with N = 32-44 using a Skyrme-Hartree-Fock-Bogoliubov mean-field code employing a two-dimensional mesh representation in the cylindrical coordinate system. Evaluating the quadrupole deformation energy systematically, we show that the Skyrme parameter set SkM* gives a quadrupole instability around the neutron numbers N ∼ 38-42 in Cr isotopes, where the deformation energy curve suggests a transitional behavior with a shallow minimum extending to a large prolate deformation. The roles of a deformed N = 38 gap and the position of the neutron g_{9/2} orbit are analysed in detail.
- Publication:
-
Progress of Theoretical Physics
- Pub Date:
- July 2008
- DOI:
- 10.1143/PTP.120.143
- arXiv:
- arXiv:0803.0369
- Bibcode:
- 2008PThPh.120..143O
- Keywords:
-
- Nuclear Theory
- E-Print:
- Prog.Theor.Phys.120:143-157,2008