Isospin Effect on Level Spacing of N=9 Isotones

  • The ground-state properties of N=8 and N=9 isotones are investigated in the framework of the single-particle shell model. The isospin effect on the average nuclear potential is taken into account by introducing an isospin-dependent term in the depth of the Woods-Saxon potential. The theoretical results of RMS radii and spin-parity values are in agreement with the experimental data. Especially, the level inversion between neutron levels 2s1/2 and 1d5/2 in N=9 isotones is reproduced. A detailed discussion on numerical results is given and one-neutron halos in the ground states of 14B and 15C are presented.
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GUO Yan-Qing and REN Zhong-Zhou. Isospin Effect on Level Spacing of N=9 Isotones[J]. Chinese Physics C, 2007, 31(4): 361-365.
GUO Yan-Qing and REN Zhong-Zhou. Isospin Effect on Level Spacing of N=9 Isotones[J]. Chinese Physics C, 2007, 31(4): 361-365. shu
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Received: 2006-08-03
Revised: 2006-11-16
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Isospin Effect on Level Spacing of N=9 Isotones

    Corresponding author: REN Zhong-Zhou,
  • Department of Physics, Nanjing University, Nanjing 210008, China2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000, China

Abstract: The ground-state properties of N=8 and N=9 isotones are investigated in the framework of the single-particle shell model. The isospin effect on the average nuclear potential is taken into account by introducing an isospin-dependent term in the depth of the Woods-Saxon potential. The theoretical results of RMS radii and spin-parity values are in agreement with the experimental data. Especially, the level inversion between neutron levels 2s1/2 and 1d5/2 in N=9 isotones is reproduced. A detailed discussion on numerical results is given and one-neutron halos in the ground states of 14B and 15C are presented.

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