The potential energy surfaces and density distributions of ground states in even-mass Be isotopes are studied by using the point-coupling covariant density functional theory with the PC-F1 effective interaction.The cl...The potential energy surfaces and density distributions of ground states in even-mass Be isotopes are studied by using the point-coupling covariant density functional theory with the PC-F1 effective interaction.The clustering structure is exhibited automatically in most of the Be isotopes.The results indicate that ^(6)Be has an α+2p clustering structure,while ^(8,10,14)Be have the 2αclustering structure.Theα–αdistances and the corresponding quadrupole deformation parameters have a similar evolution trend against the neutron number.展开更多
The properties of neutron-rich boron isotopes are studied in the relativistic continuum Hartree-Bogoliubov theory in coordinate space with NL-SH,PK1 and TM2 effective interactions.Pairing corrections are taken into ac...The properties of neutron-rich boron isotopes are studied in the relativistic continuum Hartree-Bogoliubov theory in coordinate space with NL-SH,PK1 and TM2 effective interactions.Pairing corrections are taken into account by a density dependent force of zero range.The binding energies calculated for these nuclei agree with the experimental data quite well.The neutron-rich nucleus 17 B has been predicted to have a two-neutron halo structure in its ground state.The halo structure of 17 B is reproduced in a self-consistent way,and this halo is shown to be formed by the valence neutron level 2s 1/2.展开更多
The ground-state properties of N=3 isotones and mirror nuclei have been investigated in the Rrelativistic Continuum Hartree-Bogoliubov theory with the NLSH effective interaction. Pairing correlations are taken into ac...The ground-state properties of N=3 isotones and mirror nuclei have been investigated in the Rrelativistic Continuum Hartree-Bogoliubov theory with the NLSH effective interaction. Pairing correlations are taken into account by a density-dependent 5-force. The calculations show that the proton density distributions of SB and 9C have a long tail, the core has an increasing tendency of 9C and the paired off valence protons make the halo distribution shrink. The cross sections for the 8B（gC）＋12C reaction which are consistent with the experimental data are calculated using the Glauber model. On the whole, we think that SB is a one-proton halo nucleus and 9C is a two-proton halo nucleus.展开更多
基金Supported partially by the National Natural Science Foundation of China under Grant Nos 10947013, 10475098 and 10205019, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KJCX2-YW-N44, Open Research Program at Large Scale Facility of Chinese Academy of Sciences （O903010YKF）, and the SWU Initial Research Foundation under Grant to Doctor （SWU109011）.
基金Supported by the National Natural Science Foundation of China(11075133,10205019)the Fundamental Research Funds for the Chinese Central Universities(XDJK2010D005,XDJK2010C049)the National Innovation Experimental Program for Chinese University Students(101063522).
文摘The potential energy surfaces and density distributions of ground states in even-mass Be isotopes are studied by using the point-coupling covariant density functional theory with the PC-F1 effective interaction.The clustering structure is exhibited automatically in most of the Be isotopes.The results indicate that ^(6)Be has an α+2p clustering structure,while ^(8,10,14)Be have the 2αclustering structure.Theα–αdistances and the corresponding quadrupole deformation parameters have a similar evolution trend against the neutron number.
基金Supported by National Natural Science Foundation of China (11075133,10205019,11075190)Fundamental Research Funds for the Central Universities (XDJK2010D005,XDJK2010C049)+1 种基金Knowledge Innovation Program of Chinese Academy of Sciences(KJCX2-YW-N44)Open Research Program at Large Scale Facility of Chinese Academy of Sciences (O903010YKF)
文摘The properties of neutron-rich boron isotopes are studied in the relativistic continuum Hartree-Bogoliubov theory in coordinate space with NL-SH,PK1 and TM2 effective interactions.Pairing corrections are taken into account by a density dependent force of zero range.The binding energies calculated for these nuclei agree with the experimental data quite well.The neutron-rich nucleus 17 B has been predicted to have a two-neutron halo structure in its ground state.The halo structure of 17 B is reproduced in a self-consistent way,and this halo is shown to be formed by the valence neutron level 2s 1/2.
基金Supported by Fundamental Research Funds for Cental Universities (XDJK2010D005,XDJK2010C049)National Natural Science Foundation of China (11075133,10205019)
文摘The ground-state properties of N=3 isotones and mirror nuclei have been investigated in the Rrelativistic Continuum Hartree-Bogoliubov theory with the NLSH effective interaction. Pairing correlations are taken into account by a density-dependent 5-force. The calculations show that the proton density distributions of SB and 9C have a long tail, the core has an increasing tendency of 9C and the paired off valence protons make the halo distribution shrink. The cross sections for the 8B（gC）＋12C reaction which are consistent with the experimental data are calculated using the Glauber model. On the whole, we think that SB is a one-proton halo nucleus and 9C is a two-proton halo nucleus.
