Re-examination of Finite-Size Effects in Isobaric Yield Ratios Using a Statistical Abrasion-Ablation Model  

作　　者：MA Chun-Wang WANG Shan-Shan WEI Hui-Ling MA Yu-Gang 马春旺;王闪闪;魏慧玲;马余刚(Department of Physics,Henan Normal University,Xinxiang 453007;Department of Nuclear Physics,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800)

机构地区：[1]Department of Physics,Henan Normal University,Xinxiang 453007 [2]Department of Nuclear Physics,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800

出　　处：《Chinese Physics Letters》2013年第5期44-47,共4页中国物理快报（英文版）

基　　金：the National Natural Science Foundation of China under Grant Nos 10905017 and 10979074;the Knowledge Innovation Project of the Chinese Academy of Sciences under Grant No KJCX2-EW-N01;the Program for Science&Technology Innovation Talents in Universities of Henan Province(HASTIT);the Young Teacher Project in Henan Normal University.

摘　　要：The"finite-size"effects in the isobaric yield ratio(IYR),which are shown in the standard grand-canonical and canonical statistical ensembles(SGC/CSE)method,are claimed to prevent the actual values of physical parameters from being obtained.The conclusion of SGC/CSE may be questionable for neutron-rich nucleus-induced reactions.To investigate whether the IYR has finite-size effects,we re-examine the IYR for the mirror nuclei[IYR(m)]using a modified statistical abrasion-ablation(SAA)model.It is found that when the projectile is not so neutron-rich,the IYR(m)depends on the isospin of the projectile,but size dependence can not be excluded.In reactions induced by the very neutron-rich projectiles,contrary results to those of the SGC/CSE models are obtained,i.e.,the dependence of the IYR(m)on the size and the isospin of the projectile is weakened and disappears in both the SAA and experimental results.

关 键 词：CANONICAL finite MIRROR 

分 类 号：O57[理学—粒子物理与原子核物理]