Ground state properties of La isotopes in reflection asymmetric relativistic mean field theory  被引量:2

Ground state properties of La isotopes in reflection asymmetric relativistic mean field theory

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作  者:WANG Nan1 & GUO Lu2 1 College of Physics,Shenzhen University,Shenzhen 518060,China 2 Department of Physics,Faculty of Science,University of Tokyo,Tokyo 113-0033,Japan 

出  处:《Science China(Physics,Mechanics & Astronomy)》2009年第10期1574-1578,共5页中国科学:物理学、力学、天文学(英文版)

基  金:Supported by the National Natural Science Foundation of China (Grant Nos.10811130562 and 10505016)

摘  要:The ground state properties of La isotopes are investigated with the reflection asymmetric relativistic mean field(RAS-RMF) model.The calculation results of binding energies and the quadrupole moments are in good agreements with the experiment.The calculation results indicate the change of the quadrupole deformation with the nuclear mass number.The "kink" on the isotope shifts is observed at A = 139 where the neutron number is the magic number N = 82.It is also found that the octupole deformations may exist in the La isotopes with mass number A ~ 145-155.The ground state properties of La isotopes are investigated with the reflection asymmetric relativistic mean field (RAS-RMF) model. The calculation results of binding energies and the quadrupole moments are in good agreements with the experiment. The calculation results indicate the change of the quadrupole deformation with the nuclear mass number. The “kink” on the isotope shifts is observed at A = 139 where the neutron number is the magic number N = 82. It is also found that the octupole deformations may exist in the La isotopes with mass number A ~ 145–155.

关 键 词:REFLECTION ASYMMETRIC RELATIVISTIC mean field(RAS-RMF) theory nuclear deformation binding energy 

分 类 号:O571[理学—粒子物理与原子核物理]

 

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