Systematic of isovector and isoscalar giant quadrupole resonances in normal and superfluid deformed nuclei

Abstract

The systematic study of isoscalar (IS) and isovector (IV) giant quadrupole responses (GQR) in normal and superfluid nuclei presented in [G. Scamps and D. Lacroix, Phys. Rev. 88, 044310 (2013)] is extended to the case of axially deformed and triaxial nuclei. The static and dynamical energy density functional based on Skyrme effective interaction are used to study static properties and dynamical response functions over the whole nuclear chart. Among the 749 nuclei that are considered, 301 and 65 are respectively found to be prolate and oblate while 54 do not present any symmetry axis. For these nuclei, the IS- and IV-GQR response functions are systematically obtained. In these nuclei, different aspects related to the interplay between deformation and collective motion are studied. We show that some aspects like the fragmentation of the response induced by deformation effects in axially symmetric and triaxial nuclei can be rather well understood using simple arguments. Besides this simplicity, more complex effects show up like the appearance of non-trivial deformation effects on the collective motion damping or the influence of hexadecapole or higher-orders effects. A specific study is made on the triaxial nuclei where the absence of symmetry axis adds further complexity to the nuclear response. The relative importance of geometric deformation effects and coupling to other vibrational modes are discussed.

17 pages, 26 figures

References in corpus (8)

• Role of deformation on giant resonances within the QRPA approach and the Gogny force
• Self-consistent description of multipole strength: systematic calculations
• Pairing Vibrations Study with the Time-Dependent Hartree-Fock-Bogoliubov theory
• Systematics of the first 2+ excitation with the Gogny interaction
• Linear response of light deformed nuclei investigated by self-consistent quasiparticle random-phase-approximation
• Implementation of the finite amplitude method for the relativistic quasiparticle random-phase approximation
• Polarization of the nuclear surface in deformed nuclei
• Pairing and continuum effects on low-frequency quadrupole vibrations in deformed Mg isotopes close to the neutron drip line

Cited by in corpus (27)

• Time-dependent density-functional description of nuclear dynamics
• Nuclear Equation of State from ground and collective excited state properties of nuclei
• Heavy-ions collisions and fission dynamics with the time-dependent Hartree-Fock theory and its extensions
• TDHF Theory and Its Extensions for the Multinucleon Transfer Reaction: a Mini Review
• Large-scale deformed quasiparticle random-phase approximation calculations of the $\gamma$-ray strength function using the Gogny force
• Shape evolution and collective dynamics of quasifission in TDHF
• The time-dependent generator coordinate method in nuclear physics
• Quantal diffusion approach for multinucleon transfer processes in the ${}^{58,64}$Ni+${}^{208}$Pb reactions: Toward the production of unknown neutron-rich nuclei
• Multipole modes in deformed nuclei within the finite amplitude method
• Collective aspects deduced from time-dependent microscopic mean-field with pairing: application to the fission process
• Connecting the nuclear EoS to the interplay between fusion and quasifission processes in low-energy nuclear reactions
• Deformation-induced splitting of isoscalar E0 giant resonance: Skyrme random-phase-approximation analysis
• Dynamical effects in fusion with exotic nuclei
• Interplay between low-lying isoscalar and isovector dipole modes: a comparative analysis between semi-classical and quantum approaches
• Coordinate-space solver for finite-temperature Hartree-Fock-Bogoliubov calculation using the shifted Krylov method
• Multipole modes of excitation in triaxially deformed superfluid nuclei
• Wavelet signatures of $K$-splitting of the Isoscalar Giant Quadrupole Resonance in deformed nuclei from high-resolution (p,p${}^{\prime }$) scattering off ${}^{146,148,150}$Nd
• Nuclear Quantum Many-Body Dynamics: From Collective Vibrations to Heavy-Ion Collisions (2nd edition)
• Effect of pairing on transfer and fusion reactions
• An implementation of nuclear time-dependent density-functional theory and its application to the nuclear isovector electric dipole resonance
• Nuclear ground states in a consistent implementation of the time-dependent density matrix approach
• Time-dependent mean field determination of the excitation energy in transfer reactions: application to the reaction ${}^{238}$U on ${}^{12}$C at 6.14 MeV/A
• Superfluid fission dynamics with microscopic approaches
• Microscopic description of large amplitude collective motion in the nuclear astrophysics context
• Effect of giant resonances on fluctuations of electromagnetic fields in heavy ion collisions
• Time-dependent Hartree-Fock Study of Octupole Vibrations in doubly magic nuclei
• Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry