The intruder feature of 31Mg and the coexistence of many particle and many hole states

Abstract

The low-lying level structure of ${}^{31}\mathrm{Mg}$ has been investigated by the antisymmetrized molecular dynamics (AMD) plus generator coordinate method (GCM) with the Gogny D1S force. It is shown that the N=20 magic number is broken and the ground state has the pure neutron $2p3h$ configuration. The coexistence of many particle and many hole states at very low excitation energy is discussed.

References in corpus (7)

• Onset of intruder ground state in exotic Na isotopes and evolution of the N=20 shell gap
• Deformed Base Antisymmetrized Molecular Dynamics and its Application to ^{20}Ne
• Shell model studies of neutron rich nuclei
• Pairing effects on the collectivity of quadrupole states around 32Mg
• Shell Model Monte Carlo studies of neutron-rich nuclei in the 1s-0d-1p-0f shells
• Description of quadrupole collectivity in N ~ 20 nuclei with techniques beyond the mean field
• Many-Particle and Many-Hole States in Neutron-Rich Ne Isotopes Related to Broken N=20 Shell Closure

Cited by in corpus (17)

• Evolution of shell structure in exotic nuclei
• The continuum discretized coupled-channels method and its applications
• Determination of the structure of ${}^{31}$Ne by full-microscopic framework
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• Ground-state properties of neutron-rich Mg isotopes
• Deformation of Ne isotopes in the island-of-inversion region
• Antisymmetrized molecular dynamics studies for exotic clustering phenomena in neutron-rich nuclei
• Deformation effect on total reaction cross sections for neutron-rich Ne-isotopes
• Projection on particle number and angular momentum: Example of triaxial Bogoliubov quasiparticle states
• Mass-number and isotope dependence of the local microscopic optical potential for polarized proton scattering
• Microscopic optical potentials for ${}^4$He scattering
• Reaction cross sections of the deformed halo nucleus 31Ne
• Multireference covariant density-functional theory for the low-lying states of odd-mass nuclei
• Quantum-number projected generator coordinate method for ${}^{21}$Ne with a chiral two-nucleon-plus-three-nucleon interaction
• Monopole and dipole transitions of the cluster states of 18O
• Ab initio study of island of inversion in odd-$A$ nuclei: Structure of ${}^{31,33}$Mg
• Investigating nuclear density profiles to reveal particle-hole configurations in the island of inversion