Shell evolution at N=20 in the constrained relativistic mean field approach

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SUN Bao-Hua and LI Jian. Shell evolution at N=20 in the constrained relativistic mean field approach[J]. Chinese Physics C, 2008, 32(11): 882-885. doi: 10.1088/1674-1137/32/11/007
SUN Bao-Hua and LI Jian. Shell evolution at N=20 in the constrained relativistic mean field approach[J]. Chinese Physics C, 2008, 32(11): 882-885.  doi: 10.1088/1674-1137/32/11/007 shu
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Received: 2008-04-25
Revised: 2008-06-18
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Shell evolution at N=20 in the constrained relativistic mean field approach

    Corresponding author: SUN Bao-Hua,

Abstract: 

The shell evolution at N=20, a disappearing neutron magic number observed experimentally in very neutron-rich nuclides, is investigated in the constrained relativistic mean field (RMF) theory. The trend of the shell closure observed experimentally towards the neutron drip-line can be reproduced. The predicted two-neutron separation energies, neutron shell gap energies and deformation parameters of ground states are shown as well. These results are compared with the recent Hartree-Fock-Bogliubov (HFB-14) model and the available experimental data. The perspective towards a better understanding of the shell evolution is discussed.

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