Monopole Modes of Excitation in Deformed Neutron-rich Mg Isotopes

Journal Article · Wed Aug 26 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232060· OSTI ID:21344565

Yoshida, Kenichi ^[1]

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1. RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198 (Japan)

The giant monopole resonance (GMR) and the low-frequency mode of monopole excitation in neutron-rich magnesium isotopes close to the drip line are investigated by means of the deformed Hartree-Fock-Bogoliubov and quasiparticle random-phase approximations. It is found that the GMR has a two-peak structure due to the deformation. The lower-energy resonance is generated associated with the coupling to the K{sup p}i = 0{sup +} component of the giant quadrupole resonance. Besides the GMR, we obtain the soft K{sup p}i = 0{sup +} mode below the neutron emission threshold energy.

• OSTI ID: 21344565
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1165; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
APPROXIMATIONS
BARYONS
CALCULATION METHODS
COUPLING
DEFORMATION
ELEMENTARY PARTICLES
EMISSION
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
GIANT RESONANCE
HADRONS
HARTREE-FOCK-BOGOLYUBOV THEORY
ISOTOPES
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MATTER
MONOPOLES
NEUTRON EMISSION
NEUTRONS
NUCLEAR DEFORMATION
NUCLEAR MATTER
NUCLEAR MODELS
NUCLEAR QUADRUPOLE RESONANCE
NUCLEAR STRUCTURE
NUCLEONS
RANDOM PHASE APPROXIMATION
RESONANCE
SHELL MODELS
THRESHOLD ENERGY