Theoretical research on proton halos in exotic nuclei  

作　　者：倪冬冬 任中洲 

机构地区：[1]Space Science Institute,Macao University of Science and Technology [2]Department of Physics,Institute of Acoustics,Nanjing University [3]School of Physics Science and Engineering,Tongji University [4]Center of Theoretical Nuclear Physics,National Laboratory of Heavy-Ion Accelerator

出　　处：《Chinese Physics C》2017年第11期89-94,共6页中国物理C（英文版）

基　　金：Supported by Science and Technology Development Fund of Macao(007/2016/A1,039/2013/A2);National Natural Science Foundation of China(11535004,11035001,11375086,11105079,10735010,10975072,11175085,11235001);National Major State Basic Research and Development of China(2016YFE0129300);Research Fund of Doctoral Point(RFDP)(20100091110028)

摘　　要：Very neutron-deficient nuclei are investigated with Woods-Saxon potentials,especially the newly measured A =2Z-1 nucleus 65As [X.L.Tu et al.,Phys.Rev.Lett.106,112501（2011）],where the experimental proton separation energy is obtained as-90（85） keV for the first time.Careful consideration is given to quasibound protons with outgoing Coulomb wave boundary conditions.The observed proton halos in the first excited state of 17F and in the ground states of 26,27,28P are reproduced well,and predictions of proton halos are made for the ground states of 56,57Cu and 65As.The sensitivity of the results to the proton separation energy is discussed in detail,together with the effect of the l=1 centrifugal barrier on proton halos.Very neutron-deficient nuclei are investigated with Woods-Saxon potentials,especially the newly measured A =2Z-1 nucleus 65As [X.L.Tu et al.,Phys.Rev.Lett.106,112501（2011）],where the experimental proton separation energy is obtained as-90（85） keV for the first time.Careful consideration is given to quasibound protons with outgoing Coulomb wave boundary conditions.The observed proton halos in the first excited state of 17F and in the ground states of 26,27,28P are reproduced well,and predictions of proton halos are made for the ground states of 56,57Cu and 65As.The sensitivity of the results to the proton separation energy is discussed in detail,together with the effect of the l=1 centrifugal barrier on proton halos.

关 键 词：proton halo valence proton quasibound state 

分 类 号：O571[理学—粒子物理与原子核物理]