Self-consistent models for the collective excitation phenomena in exotic nuclei

Journal Article · Wed Apr 26 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2200902· OSTI ID:20798633

Paar, N; Papakonstantinou, P ^[1]; Niksic, T; Ring, P ^[2]; Vretenar, D ^[3]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
2. Physik-Department der Technischen Universitaet Muenchen, D-85748 Garching (Germany)
3. Physics Department, Faculty of Science, University of Zagreb (Croatia)

Multipole excitation phenomena in exotic nuclei are investigated within the framework of the fully self-consistent Relativistic Quasi-particle Random-Phase Approximation (RQRPA) based on the Relativistic Hartree-Bogoliubov (RHB) model with density dependent meson-nucleon couplings, and finite-range Gogny interaction to account for the pairing correlations. The RHB+RQRPA study of nuclei towards the proton drip-line indicates the appearance of an exotic collective excitation mode: the proton pygmy dipole resonance, due to oscillations of loosely bound protons against the rest of nucleons. The continuum RPA using Skyrme interactions is employed in a study of doubly magic 48Ni, resulting in a rather broad distribution of the low-lying dipole strength, due to the coupling to the continuum.

• OSTI ID: 20798633
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 831; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLECTIVE EXCITATIONS
CORRELATIONS
COUPLING
DENSITY
DIPOLES
DISTRIBUTION
HARTREE-FOCK-BOGOLYUBOV THEORY
NUCLEI
OSCILLATIONS
PROTONS
QUASI PARTICLES
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
RESONANCE
SKYRME POTENTIAL