ITP OpenIR  > 理论物理所2014年知识产出
Microscopic self-consistent study of neon halos with resonant contributions
Zhang, SS; Smith, MS; Kang, ZS; Zhao, J; Zhang, SS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.
2014
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号730期号:-页码:30-35
摘要Recent 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.
部门归属[Zhang, Shi-Sheng
关键词Hartree-bogoliubov Theory Neutron Drip-line Plus Bcs Approach Mean-field Theory Pairing Correlations Light-nuclei Giant Halo Continuum Isotopes Proton
学科领域Physics
资助者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) ; 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)
DOI10.1016/j.physletb.2014.01.023
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收录类别SCI
语种英语
资助者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) ; 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)
WOS记录号WOS:000333506400006
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15810
专题理论物理所2014年知识产出
通讯作者Zhang, SS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China.
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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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