Pairing correlations in nuclei on the neutron-drip line

Journal Article · Sat Oct 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.044321· OSTI ID:20699067

Hagino, K ^[1]; Sagawa, H ^[2]

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1. Department of Physics, Tohoku University, Sendai, 980-8578 (Japan)
2. Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8560 (Japan)

Paring correlations in weakly bound nuclei on the edge of the neutron-drip line is studied by use of a three-body model. A density-dependent contact interaction is employed to calculate the ground state of halo nuclei {sup 6}He and {sup 11}Li, as well as a skin nucleus {sup 24}O. Dipole excitations in these nuclei are also studied within the same model. We point out that the dineutron-type correlation plays a dominant role in the halo nuclei {sup 6}He and {sup 11}Li, having the coupled spin of the two neutrons S=0, whereas the correlation similar to the BCS type is important in {sup 24}O. Contributions of the spin S=1 and S=0 configurations are separately discussed in the low-energy dipole excitations.

• OSTI ID: 20699067
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BCS THEORY
CLUSTER MODEL
CORRELATIONS
DENSITY
DIPOLES
EXCITATION
GROUND STATES
HELIUM 6
LITHIUM 11
NEUTRONS
NUCLEAR FORCES
NUCLEAR HALOS
OXYGEN 24
SPIN
THREE-BODY PROBLEM