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Neutron halos in hypernuclei
Lu, HF; Meng, J; Zhang, SQ; Zhou, SG; Lu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
2003
发表期刊EUROPEAN PHYSICAL JOURNAL A
ISSN1434-6001
卷号17期号:1页码:19-24
摘要Properties of single-Lambda and double-Lambda hypernuclei for even-N Ca isotopes ranging from the proton dripline to the neutron dripline are studied using the relativistic continuum Hartree-Bogoliubov theory with a zero-range pairing interaction. Compared with ordinary nuclei, the addition of one or two Lambda-hyperons lowers the Fermi level. The predicted neutron dripline nuclei are, respectively, Ca-75(Lambda) and Ca-76(2Lambda) as the additional attractive force provided by the Lambda-N interaction shifts nuclei from outside to inside the dripline. Therefore, the last bound hypernuclei have two more neutrons than the corresponding ordinary nuclei. Based on the analysis of two-neutron separation energies, neutron single-particle energy levels,the contribution of continuum and nucleon density distribution, giant halo phenomena due to the pairing correlation, and the contribution from the continuum are suggested to exist in Ca hypernuclei similar to those that appear in ordinary Ca isotopes.
部门归属Peking Univ, Sch Phys, Beijing 100871, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
关键词Mean-field Theory Hartree-bogoliubov Theory Lambda-hypernuclei Weak Decay Double Hyperfragment Nuclear Systems Strangeness Particle Excess Sigma
学科领域Physics
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收录类别SCI
WOS记录号WOS:000183545500004
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被引频次:31[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/311006/13303
专题1978-2010年知识产出
通讯作者Lu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
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GB/T 7714
Lu, HF,Meng, J,Zhang, SQ,et al. Neutron halos in hypernuclei[J]. EUROPEAN PHYSICAL JOURNAL A,2003,17(1):19-24.
APA Lu, HF,Meng, J,Zhang, SQ,Zhou, SG,&Lu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China..(2003).Neutron halos in hypernuclei.EUROPEAN PHYSICAL JOURNAL A,17(1),19-24.
MLA Lu, HF,et al."Neutron halos in hypernuclei".EUROPEAN PHYSICAL JOURNAL A 17.1(2003):19-24.
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