Pairing correlations in nuclei on the neutron-drip line

K. Hagino and H. Sagawa
Phys. Rev. C 72, 044321 – Published 31 October 2005

Abstract

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 He6 and Li11, as well as a skin nucleus O24. 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 He6 and Li11, having the coupled spin of the two neutrons S=0, whereas the correlation similar to the BCS type is important in O24. Contributions of the spin S=1 and S=0 configurations are separately discussed in the low-energy dipole excitations.

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  • Received 29 August 2005

DOI:https://doi.org/10.1103/PhysRevC.72.044321

©2005 American Physical Society

Authors & Affiliations

K. Hagino1 and H. Sagawa2

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

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Issue

Vol. 72, Iss. 4 — October 2005

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