Experimental reconstruction of primary fragments with kinematical focusing method  

作　　者：LIN Weiping WADA Roy HUANG Meirong LIU Xingquan ZHAO Minghui CHEN Zhiqiang 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Science [2]University of Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2013年第5期54-58,共5页核技术（英文）

基　　金：Supported by National Natural Science Foundation of China(NSFC) Projects (No.11075189);"100 Persons Project"(Nos.0910020BR0 and Y010110BR0);"ADS project 302"(No.Y103010ADS)of Chinese Academy of Sciences;supported by the U.S.Department of Energy under Grant No.DE-FG0393ER40773;the Robert A.Welch Foundation under Grant A0330

摘　　要：An experimental method was used to evaluate the primary isotope yields of semi-central collisions in the reaction system64Zn+112Sn at 40A MeV.The characteristic nature of the hot nuclear matter at the time of the isotope formation was studied.The multiplicities of light particles(LPs) associated with intermediate mass fragments(IMFs) were determined experimentally by using a kinematical focusing technique.The primary isotope distributions,reconstructed by a Monte Carlo method,were compared with those of the AMD-Gemini simulations.ac/T=0.11 and asym/T=3.34 were extracted from the reconstructed primary fragments yield.These are consistent with those of the primary fragments of the AMD simulation.An experimental method was used to evaluate the primary isotope yields of semi-central collisions in the reaction system 64Zn＋l12Sn at 40A MeV. The characteristic nature of the hot nuclear matter at the time of the isotope formation was studied. The multiplicities of light particles （LPs） associated with intermediate mass fragments （IMFs） were determined experimentally by using a kinematical focusing technique. The primary isotope distributions, reconstructed by a Monte Carlo method, were compared with those of the AMD-Gemini simulations, ac/T=O. 11 and asym/T=3.34 were extracted from the reconstructed primary fragments yield. These are consistent with those of the primary fragments of the AMD simulation.

关 键 词：运动学 主段 实验 聚焦法 同位素分布 中等质量碎片 蒙特卡罗方法 反应体系 

分 类 号：O571.4[理学—粒子物理与原子核物理]