Density-dependent potential for multi-neutron halo nuclei  

作　　者：陈双 褚衍运 任中洲 

机构地区：[1]Department of Physics, Nanjing University [2]Joint Center for Particle, Nuclear Physics and Cosmology [3]Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator at Lanzhou

出　　处：《Chinese Physics C》2009年第8期639-644,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10535010, 10675090, 10775068);973 National Major State Basic Research and Development of China (2007CB815004);CAS Knowledge Innovation Project (KJCX2-SW-N02);Research Fundof Doctoral Point (20070284016)

摘　　要：We apply a simple density-dependent potential model to the three-body calculation of the groundstate structure of drip-line nuclei with a weakly bound core. The hyperspherical harmonics method is used to solve the Faddeev equations. There are no undetermined potential parameters in this calculation. We find that for the halo nuclei with a weakly-bound core, the calculated properties of the ground-state structure are in better agreement with experimental data than the results calculated from the standard Woods-Saxon and Gauss type potentials. We also successfully reproduce the experimental cross sections by using the density calculated from this method. This may be explained by the fact that the simple Fermi or Gaussian function can not exactly describe the density distribution of the drip-line nuclei.We apply a simple density-dependent potential model to the three-body calculation of the groundstate structure of drip-line nuclei with a weakly bound core. The hyperspherical harmonics method is used to solve the Faddeev equations. There are no undetermined potential parameters in this calculation. We find that for the halo nuclei with a weakly-bound core, the calculated properties of the ground-state structure are in better agreement with experimental data than the results calculated from the standard Woods-Saxon and Gauss type potentials. We also successfully reproduce the experimental cross sections by using the density calculated from this method. This may be explained by the fact that the simple Fermi or Gaussian function can not exactly describe the density distribution of the drip-line nuclei.

关 键 词：DENSITY-DEPENDENT three-body model halo nuclei 

分 类 号：O571.1[理学—粒子物理与原子核物理]