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Tensor force effect on the exotic structure of neutron-rich Ca isotopes*
KTH, School of Engineering Sciences (SCI), Physics. Shijiazhuang Tiedao Univ, Dept Math & Phys, Shijiazhuang 050043, Hebei, Peoples R China;Shijiazhuang Tiedao Univ, Inst Appl Phys, Shijiazhuang 050043, Hebei, Peoples R China;China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China.
Shijiazhuang Tiedao Univ, Dept Math & Phys, Shijiazhuang 050043, Hebei, Peoples R China.;Shijiazhuang Tiedao Univ, Inst Appl Phys, Shijiazhuang 050043, Hebei, Peoples R China.;Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China..
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics. Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden..ORCID iD: 0000-0002-1406-5695
China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China..
2019 (English)In: Chinese Physics C, High Energy Physics & Nuclear Physics, ISSN 1674-1137, E-ISSN 0899-9996, Vol. 43, no 11, article id 114101Article in journal (Refereed) Published
Abstract [en]

The structure of neutron-rich Ca isotopes is studied in the spherical Skyrme-Hartree-Fock-Bogoliubov (SHFB) approach with SLy5, SLy5+T, and 36 sets of TIJ parametrizations. The calculated results are compared with the available experimental data for the average binding energies, two-neutron separation energies and charge radii. It is found that the SLy5+T, T31, and T32 parametrizations reproduce best the experimental properties, especially the neutron shell effects at N = 20, 28 and 32, and the recently measured two-neutron separation energy of Ca-56. The calculations with the SLy5+T and T31 parametrizations are extended to isotopes near the neutron drip line. The neutron giant halo structure in the very neutron-rich Ca isotopes is not seen with these two interactions. However, depleted neutron central densities are found in these nuclei. By analyzing the neutron mean-potential, the reason for the bubble-like structure formation is given.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2019. Vol. 43, no 11, article id 114101
Keywords [en]
spherical SHFB approach, tensor force, neutron-rich Ca isotopes, neutron giant halo, bubble structure
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URN: urn:nbn:se:kth:diva-264159DOI: 10.1088/1674-1137/43/11/114101ISI: 000493109100002Scopus ID: 2-s2.0-85076024773OAI: oai:DiVA.org:kth-264159DiVA, id: diva2:1376871
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QC 20191210

Available from: 2019-12-10 Created: 2019-12-10 Last updated: 2020-01-10Bibliographically approved

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Qi, Chong

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