Chinese Physics C > 2008, Vol. 32 > Issue(11): 882-885 DOI: 10.1088/1674-1137/32/11/007

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

SUN Bao-Hua^,,
LI Jian

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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.

References

[1]

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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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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author:SUN Bao-Hua,

Received Date:2008-04-25

Accepted Date:2008-06-18

Available Online:2008-11-05

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

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