Triaxial quadrupole deformation dynamics in sd-shell nuclei around 26Mg
Nobuo Hinohara, Yoshiko Kanada-En'yo
TL;DR
This paper investigates large-amplitude triaxial quadrupole deformation dynamics in sd-shell nuclei around 26Mg using a collective Hamiltonian approach, reproducing key nuclear properties and analyzing neutron-proton contributions.
Contribution
It introduces a detailed theoretical framework combining constrained Hartree-Fock-Bogoliubov and QRPA methods to study deformation dynamics in sd-shell nuclei, providing new insights into gamma-softness and transition properties.
Findings
Reproduces ground band and vibrational properties of 24Mg and 28Si.
Discusses gamma-softness in 26Mg and 24Ne.
Analyzes neutron and proton contributions to transition properties.
Abstract
Large-amplitude dynamics of axial and triaxial quadrupole deformation in 24,26Mg, 24Ne, and 28Si is investigated on the basis of the quadrupole collective Hamiltonian constructed with use of the constrained Hartree-Fock-Bogoliubov plus the local quasiparticle random phase approximation method. The calculation reproduces well properties of the ground rotational bands, and beta and gamma vibrations in 24Mg and 28Si. The gamma-softness in the collective states of 26Mg and 24Ne are discussed. Contributions of the neutrons and protons to the transition properties are also analyzed in connection with the large-amplitude quadrupole dynamics.
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