Study on Fragments Emission in the^(64)Ni+^(64)Ni Reaction at 40 AMeV  

作　　者：杨昆 曹喜光 石福栋 刘星泉 张苏雅拉吐 黄美容 王建松 陈志强 R. WADA S. KOWALSKI T. KEUTGEN K. HAGEL A. BONASERA J. B. NATOWITZ T. MATERNA L. QIN P. K. SAHU 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences [3]Cyclotron Institute,Texas A & M University [4]Institute of Physics,Silesia University [5]FNRS and IPN,Universit’e Catholique de Louvain [6]Laboratori Nazionali del Sud,INFN,via Santa Sofia,62,Catania 95123,Italy

出　　处：《Plasma Science and Technology》2012年第5期386-389,共4页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.11075189);the"Hundred Gifted Scientist Plam"of the Chinese Academy of Sciences(Nos.0910020BRO,Y010110BRO)

摘　　要：The multiplicity of fragments in Fermi energy heavy-ion collisions was experimen- tally extracted. Compared with the results of calculation using the antisymmetrized molecular dynamics （AMD） model which accounts for the primary fragments only, the results calculated using the AMD together with a statistical decay code GEMINI to account for the deexcitation of excited primary fragments are in better agreement with those extracted from the experiment. This observation indicates that the experimental multiplicity distribution may be significantly different from those of primary fragments.The multiplicity of fragments in Fermi energy heavy-ion collisions was experimen- tally extracted. Compared with the results of calculation using the antisymmetrized molecular dynamics （AMD） model which accounts for the primary fragments only, the results calculated using the AMD together with a statistical decay code GEMINI to account for the deexcitation of excited primary fragments are in better agreement with those extracted from the experiment. This observation indicates that the experimental multiplicity distribution may be significantly different from those of primary fragments.

关 键 词：FRAGMENTS MULTIPLICITY secondary decay 

分 类 号：O572.24[理学—粒子物理与原子核物理]