Pairing correlations and soft dipole excitations in nuclei on the neutron-drip line
Journal Article
·
· Physics of Atomic Nuclei
Paring correlations and soft dipole excitations in weakly bound nuclei on the edge of neutron drip line are studied by using 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, while 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. The calculated results are compared with recent experimental data of {sup 6}He and {sup 11}Li.
- OSTI ID:
- 21075760
- Journal Information:
- Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 8 Vol. 70; ISSN 1063-7788; ISSN PANUEO
- Country of Publication:
- United States
- Language:
- English
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