Relativistic Point Coupling Model for Vibrational Excitations in the Continuum

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

DOI:https://doi.org/10.1063/1.3232057· OSTI ID:21344562

Ring, P; Daoutidis, J ^[1]; Litvinova, E ^[2]; Niksic, T; Paar, N; Vretenar, D ^[3]

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1. Physics Department Technical University Munich, 85748 Garching (Germany)
2. Gesellschaft fuer Schwerionenforschung mbH, 64291 Darmstadt (Germany)
3. Physics Department, Faculty of Science, University of Zagreb (Croatia)

An implementation of the relativistic random phase approximation with the proper treatment of the continuum has been developed for the relativistic point coupling model and applied to investigate collective excitations in spherical nuclei. The results are compared with the spectral implementation of the same model. In heavy nuclei, where the escape width is negligible, we find an excellent agreement between both methods in the region of giant resonance and some discrepancies in the region of low-lying pygmy resonance. The differences are more pronounced in light nuclei due to the larger values of the escape widths.

• OSTI ID: 21344562
• Journal Information: AIP Conference Proceedings, Vol. 1165, Issue 1; Conference: International conference on nuclear structure and dynamics '09, Dubrovnik (Croatia), 4-8 May 2009; Other Information: DOI: 10.1063/1.3232057; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLECTIVE EXCITATIONS
COUPLING
GIANT RESONANCE
HEAVY ION REACTIONS
HEAVY NUCLEI
LIGHT NUCLEI
NUCLEAR STRUCTURE
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
SHELL MODELS
APPROXIMATIONS
CALCULATION METHODS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
RESONANCE