Shell Model Calculations for Light Neutron-Rich Nuclei

Zhang Changhua; Gu Jinnan

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2024年10月30日

Chinese Physics C> 1996, Vol. 20> Issue(3) : 240-245

Shell Model Calculations for Light Neutron-Rich Nuclei

Zhang Changhua ^, ,
Gu Jinnan

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou 730000

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Abstract：
A shell model calculation is carried out for nuclei with 9≤A≤14 and 3≤Z≤5. In the calculation ⁸He is treated as a core. The data for 24 experimental energy spectra are selected to determine the parameters of the modified surface δinteraction (MSDI) and the single-particle energies. The RMS=0.72MeV. Then the binding energies, the low-lying excited energy spectra and the electromagnetic properties are calculated and the results are in good agreement with experiment in general. The micromechanism of the halo structure and the parity conversion of the ¹¹Be are discussed in detail. This work is carried out with the OXBASH code.

References

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M.Fukuda,Tlchihara,N.Inable et al,Phys Lett,B268（1991）339.[2] T.Kobayshi,O.Yamakama,K.Omata et al,Phys Rev Lett,60（1988）2599.[3] I.Talmi,Iunna,Phys Rev Lett,4（1960）469[4] F.Ajzenberg-selove,Nucl Phys,A506（1990）1;Nucl Phys.,A523（1990）.1[5]顾金南、戴连荣、张长华，高能物理与核物理，20（1996）185.[6] THoshino,H.Sagawa,A.Arima,Nucl Phys,A506（1990）271.[7] NFukunishi,T Otsuka,T Sebe,Phys Lett,B296（1992）279[8] H.Sagawa,B.A.Brown,Esbensen,Phys.Lett.,B309（1993）1.[9] H.Kitagawa,H.Sagawa,Nucl Phys,A551（1993）66[10] P.J.Brussaad,P.W.M.Glaudemans,shell-modelapplicationinnuclearspectroscipt.Amsterdam:North Hollard.（1977）[11] B.A.Brown,A.etchegoyen,W.D.M.Rae,Thecomputorcode O XB AS H,M SU-N SC Lreportnumber524（1984）[12] T.Otsuka,N Fukuxushi,H.Sagawa,Phys,Rev Lett,70（1993）1385[13] B.A.Brown,W A.Richter,R.E Julies et al,Ann.Phys,182（1988）191[14] EK.Warburton,B.A.Browm,Phys Rev,C46（1992）923.

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Zhang Changhua and Gu Jinnan. Shell Model Calculations for Light Neutron-Rich Nuclei[J]. Chinese Physics C, 1996, 20(3): 240-245.

Zhang Changhua and Gu Jinnan. Shell Model Calculations for Light Neutron-Rich Nuclei[J]. Chinese Physics C, 1996, 20(3): 240-245. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Shell Model Calculations for Light Neutron-Rich Nuclei

Zhang Changhua ^,
Gu Jinnan

Corresponding author: Zhang Changhua,

Institute of Modem Physics, The Chinese Academy of Sciences, Lanzhou 730000

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1996-03-05

Abstract: A shell model calculation is carried out for nuclei with 9≤A≤14 and 3≤Z≤5. In the calculation ⁸He is treated as a core. The data for 24 experimental energy spectra are selected to determine the parameters of the modified surface δinteraction (MSDI) and the single-particle energies. The RMS=0.72MeV. Then the binding energies, the low-lying excited energy spectra and the electromagnetic properties are calculated and the results are in good agreement with experiment in general. The micromechanism of the halo structure and the parity conversion of the ¹¹Be are discussed in detail. This work is carried out with the OXBASH code.