A theoretical study of halo structure using elasticproton-nucleus scattering  

作　　者：曹东亮 任中洲 董铁矿 

机构地区：[1]Department of Physics,Nanjing University [2]Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator [3]Macao University of Science and Technology

出　　处：《Chinese Physics C》2013年第3期45-52,共8页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (11035001, 11120101005, 10735010, 10975072);973 National Major State Basic Research and Development of China (2007CB815004, 2010CB327803);CAS Knowledge Innovation Project (KJCX2-SW-N02);Research Fund of Doctoral Point (RFDP)(20100091110028);Project Funded by Priority Academic Programme Development of Jiangsu Higher Education Institutions (PAPD)

摘　　要：Elastic proton scattering from Be, C, and O isotopes has been investigated in the relativistic impulse approximation （RIA）. In the calculations, the nucleon-nucleus optical potentials are obtained using ground state nuclear matter densities, which are computed using the relativistic mean field model with the FSU parameter set. The scattering observables, including differential cross section, analyzing power, and spin-rotation function, are analyzed. It is found that the scattering observables for O isotopic chains display a clear mass dependence, for instance, the minimum analyzing power shifts to a low scattering angle with increasing mass number. While for the Be isotopic chain, the emergence of a neutron halo in ^（14） Be breaks this trend, i.e., the minimum analyzing powers for ^（12） Be and ^（14） Be are almost the same as each other.Elastic proton scattering from Be, C, and O isotopes has been investigated in the relativistic impulse approximation （RIA）. In the calculations, the nucleon-nucleus optical potentials are obtained using ground state nuclear matter densities, which are computed using the relativistic mean field model with the FSU parameter set. The scattering observables, including differential cross section, analyzing power, and spin-rotation function, are analyzed. It is found that the scattering observables for O isotopic chains display a clear mass dependence, for instance, the minimum analyzing power shifts to a low scattering angle with increasing mass number. While for the Be isotopic chain, the emergence of a neutron halo in ^（14） Be breaks this trend, i.e., the minimum analyzing powers for ^（12） Be and ^（14） Be are almost the same as each other.

关 键 词：relativistic impulse approximation elastic proton-nucleus scattering neutron halo 

分 类 号：O571[理学—粒子物理与原子核物理]