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Hiroshi Oba, Masayuki Matsuo, Deformation around Neutron-Rich Cr Isotopes in Axially Symmetric Skyrme-Hatree-Fock-Bogoliubov Method, Progress of Theoretical Physics, Volume 120, Issue 1, July 2008, Pages 143–157, https://doi.org/10.1143/PTP.120.143
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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 g9/2 orbit are analysed in detail.