Continuum effects for many-body correlations in nuclei close to the neutron drip line

Journal Article · Thu Dec 15 04:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.064308· OSTI ID:20771085

Yamagami, Masayuki ^[1]

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1. Radioactive Isotope Physics Laboratory, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198 (Japan)

Continuum effects for pairing correlations and low-frequency vibrational excitations in nuclei close to the neutron drip line are investigated by use of the coordinate space Hartree-Fock-Bogoliubov and quasiparticle random-phase approximation calculations. It is shown that quasiparticle states with small orbital angular momentum l acquire significant changes of the spatial structure by the pairing correlations and the coupling to continuum states, and they cause the spatially extended distribution of the pairing density that enhances the pairing energy. By a similar mechanism, the spatially extended structure of the two-quasiparticle states among low-l neutrons is realized, and it brings about the strong transition strength of the low-frequency vibrational excitations around the neutron drip line.

• OSTI ID: 20771085
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
COUPLING
DISTRIBUTION
EXCITATION
HARTREE-FOCK-BOGOLYUBOV THEORY
MANY-BODY PROBLEM
NEUTRONS
NUCLEI
ORBITAL ANGULAR MOMENTUM
PAIRING ENERGY
PAIRING INTERACTIONS
RANDOM PHASE APPROXIMATION