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Giant resonance properties in beta stable and unstable nuclei
Cao, LG; Liu, L; Chen, BQ; Ma, ZY; Cao, LG , Inst Atom Energy, Beijing 102413, Peoples R China.
2001
发表期刊ACTA PHYSICA SINICA
ISSN1000-3290
卷号50期号:4页码:638-643
摘要We study the giant resonances of stable and unstable nuclei in the framework of the consistent relativistic random phase approximation built on the nonlinear relativistic mean field (RMF) ground states. The isoscalar and isovector modes of giant resonances for stable nuclei, such as Pb-208, Sm-144, Sn-116, Zr-90, Ca-40, O-16 and Ca isotope chains are investigated. The contribution to the giant resonances from the Dirac sea states and the currents of vector mesons are examined. The results show that the effects of the Dirac sea states on the isoscalar giant modes are pronounced, but become weaker for light nuclei, while the contributions of the isovector modes are negligible. The few sets of parameterizations of nonlinear RMF model, which are commonly used to give a good description of ground-state properties of finite nuclei, could also well describe the nuclear dynamic properties-giant resonances. For nuclei with the extreme value of N/Z, low-lying collective excitations are found in isovector dipole modes, which are mainly due to the ph excitation of the weakly bound states near Fermi surface and the isospin mixture effect.
部门归属Inst Atom Energy, Beijing 102413, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Nucl Theoret Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Random-phase-approximation Pion Charge-exchange Mean-field Theory Finite Nuclei Monopole Matter Model
学科领域Physics
收录类别SCI
WOS记录号WOS:000167947700011
引用统计
被引频次:4[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/311006/12779
专题1978-2010年知识产出
通讯作者Cao, LG , Inst Atom Energy, Beijing 102413, Peoples R China.
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GB/T 7714
Cao, LG,Liu, L,Chen, BQ,et al. Giant resonance properties in beta stable and unstable nuclei[J]. ACTA PHYSICA SINICA,2001,50(4):638-643.
APA Cao, LG,Liu, L,Chen, BQ,Ma, ZY,&Cao, LG , Inst Atom Energy, Beijing 102413, Peoples R China..(2001).Giant resonance properties in beta stable and unstable nuclei.ACTA PHYSICA SINICA,50(4),638-643.
MLA Cao, LG,et al."Giant resonance properties in beta stable and unstable nuclei".ACTA PHYSICA SINICA 50.4(2001):638-643.
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