Magnetic excitations in nuclei with neutron excess

Abstract

The excitation of the $1^{+}$, $2^{-}$ and $3^{+}$ modes in ${}^{16}$O, ${}^{22}$O, ${}^{24}$O, ${}^{28}$O, ${}^{40}$Ca, ${}^{48}$Ca, ${}^{52}$Ca and ${}^{60}$Ca nuclei is studied with self-consistent random phase approximation calculations. Finite-range interactions of Gogny type, containing also tensor-isospin terms, are used. We analyze the evolution of the magnetic resonances with the increasing number of neutrons, the relevance of collective effects, the need of a correct treatment of the continuum and the role of the tensor force.

18 pages, 12 figures, 2 tables, accepted for publication in Physical Review C

References in corpus (9)

• Spin-orbit splitting and the tensor component of the Skyrme interaction
• Tensor interaction contributions to single-particle energies
• Evolution of nuclear shells with the Skyrme density dependent interaction
• Effects of self-consistency violation in Hartree-Fock RPA calculations for nuclear giant resonances revisited
• Tensor effective interaction in self-consistent Random Phase Approximation calculations
• Self-consistent Continuum Random Phase Approximation calculations with finite-range interactions
• Evolution of the pygmy dipole resonance in nuclei with neutron excess
• Mean-field calculations of exotic nuclei ground states
• Self-consistent continuum random phase approximation calculations of ${}^4$He electromagnetic responses

Cited by in corpus (10)

• Tensor and tensor-isospin terms in the effective Gogny interaction
• The Nuclear Tensor Interaction in Covariant Energy Density Functional
• Tensor-force effects on single-particle levels and proton bubble structure around the $Z$ or $N=20$ magic number
• Relativistic interpretation on the nature of nuclear tensor force
• Electric quadrupole and magnetic dipole moments of odd nuclei near the magic ones in a self-consistent approach
• Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent Random Phase Approximation approach with finite-range interaction
• Self-consistent continuum random-phase approximation with finite-range interactions for charge-exchange excitations
• Tensor Fermi liquid parameters in nuclear matter from chiral effective field theory
• Impact of pion tensor force on alpha clustering in ${}^{20}$Ne
• Can realistic interaction be useful for nuclear mean-field approaches?