ITP OpenIR  > 理论物理所科研产出  > SCI期刊论文
Zhang, SS; Smith, MS; Kang, ZS; Zhao, J; Zhang, SS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.
Microscopic self-consistent study of neon halos with resonant contributions
Source PublicationPHYSICS LETTERS B
Language英语
KeywordHartree-bogoliubov Theory Neutron Drip-line Plus Bcs Approach Mean-field Theory Pairing Correlations Light-nuclei Giant Halo Continuum Isotopes Proton
AbstractRecent reaction measurements have been interpreted as evidence of a halo structure in the exotic neutron-rich isotopes Ne-29,Ne-31. While theoretical studies of Ne-31 generally agree on its halo nature, they differ significantly in their predictions of its properties and underlying cause (e.g., that Ne-31 has an inverted ordering of p-f orbitals). We have made a systematic theoretical analysis of possible Neon halo signatures - the first using a fully microscopic, relativistic mean field approach that properly treats positive energy orbitals (such as the valence neutron in Ne-31) self-consistently with bound levels, as well as the pairing effect that keeps the nucleus loosely bound with negative Fermi energy. Our model is the analytical continuation of the coupling constant (ACCC) method based on a relativistic mean field (RMF) theory with Bardeen-Cooper-Schrieffer (BCS) pairing approximation. We calculate neutron- and matter-radii, one-neutron separation energies, p- and f-orbital energies and occupation probabilities, and neutron densities for single-particle resonant orbitals in Ne27-31. We analyze these results for evidence of neutron halo formation in Ne-29,Ne-31. Our model predicts a p-orbit in halo structure for Ne-31, based on a radius increase from Ne-30 that is 7-8 times larger than the increase from Ne-29 to Ne-30, as well as a decrease in the neutron separation energy by a factor of similar to 10 compared to that of Ne27-30. In contrast to some other studies, our inclusion of resonances yields an inverted ordering of p and f orbitals for spherical and slightly deformed nuclei. Furthermore, we find no evidence of an s-orbit in halo in Ne-29 as recently claimed in the literature. (C) 2014 The Authors. Published by Elsevier B.V.
2014
ISSN0370-2693
Volume730Issue:-Pages:30-35
Subject AreaPhysics
DOI10.1016/j.physletb.2014.01.023
Indexed BySCI
Funding OrganizationBeihang New Star, National Natural Science Foundation of China [11375022, 11035007, 11235002]; U.S. Dept. of Energy, Office of Nuclear Physics; Chinese U.S Theory Institute for the Physics of Exotic Nuclei (CUSTIPEN) ; Beihang New Star, National Natural Science Foundation of China [11375022, 11035007, 11235002]; U.S. Dept. of Energy, Office of Nuclear Physics; Chinese U.S Theory Institute for the Physics of Exotic Nuclei (CUSTIPEN) ; Beihang New Star, National Natural Science Foundation of China [11375022, 11035007, 11235002]; U.S. Dept. of Energy, Office of Nuclear Physics; Chinese U.S Theory Institute for the Physics of Exotic Nuclei (CUSTIPEN) ; Beihang New Star, National Natural Science Foundation of China [11375022, 11035007, 11235002]; U.S. Dept. of Energy, Office of Nuclear Physics; Chinese U.S Theory Institute for the Physics of Exotic Nuclei (CUSTIPEN)
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15810
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorZhang, SS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, SS,Smith, MS,Kang, ZS,et al. Microscopic self-consistent study of neon halos with resonant contributions[J]. PHYSICS LETTERS B,2014,730(-):30-35.
APA Zhang, SS,Smith, MS,Kang, ZS,Zhao, J,&Zhang, SS .(2014).Microscopic self-consistent study of neon halos with resonant contributions.PHYSICS LETTERS B,730(-),30-35.
MLA Zhang, SS,et al."Microscopic self-consistent study of neon halos with resonant contributions".PHYSICS LETTERS B 730.-(2014):30-35.
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