Deformations in N=14 isotones

Abstract

Systematic analysis of deformations in neutron-rich N=14 isotones was done based on the method of antisymmetrized molecular dynamics. The property of the shape coexistence in ${}^{28}$Si, which is known to have the oblate ground state and the prolate excited states, was successfully described. The results suggest that the shape coexistence may occur also in neutron-rich N=14 nuclei as well as ${}^{28}$Si. It was found that the oblate neutron shapes are favored because of the spin-orbit force in most of N=14 isotones. $Q$ moments and $E2$ transition strengths in the neutron-rich nuclei were discussed in relation to the intrinsic deformations, and a possible difference between the proton and neutron deformations in ${}^{24}$Ne was proposed.

13 pages, 7 figures, sumitted to Phys.Rev.C

References in corpus (4)

• Structure of Light Unstable Nuclei Studied with Antisymmetrized Molecular Dynamics
• Variation after Angular Momentum Projection for the Study of Excited States Based on Antisymmetrized Molecular Dynamics
• Cluster structures within Fermionic Molecular Dynamics
• Nuclear Structure based on Correlated Realistic Nucleon-Nucleon Potentials

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• Microscopic calculation of inelastic proton scattering off ${}^{18}$O, ${}^{10}$Be, ${}^{12}$Be, and ${}^{16}$C for study of neutron excitation in neutron-rich nuclei
• Neutron dominance in excited states of ${}^{26}$Mg and ${}^{10}$Be probed by proton and alpha inelastic scattering
• Transition properties of low-lying states in ${}^{28}$Si probed via inelastic proton and alpha scattering
• Alpha-cluster structure and density wave in oblate nuclei
• Proton dominance in the 2^+_2 -> 0^+_1 transition of N = Z\pm 2 nuclei around Si-28
• $\alpha$-cluster excited states in ${}^{32}$S