20—46MeV／u^（12）C离子和Cu相互作用中靶余核的反冲性质研究  

Study of Recoil Properties of Target Residues From the Interaction of Copper With 20─46MeV/u￣(12)C Ions

作　　者：吴定清[1,2] 李文新 孙彤玉[1,2] 孙儒林 赵莉莉[1,2] 张丰收 尹新民 靳根明[1,2] 李泽 敬克兴[1,2] 李新华 

机构地区：[1]中国科学院近代物理研究所 [2]中国原子能科学研究院

出　　处：《高能物理与核物理》1996年第1期13-20,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：使用离线γ能谱法和厚靶－厚收集箔技术测量了２０—４６ＭｅＶ／ｕ１２Ｃ离子和铜相互作用中余核的前向平均反冲射程．导出了中心碰撞的线性动量转移．当轰击能量为２７．５ＭｅＶ／ｕ时，每个入射核子转移的线性动量达到１５５ＭｅＶ／ｃ的最大值．复合系统的最大激发能为每核子２．５ＭｅＶ．By using off- line γ-ray spectroscopy in conjunction with thick target-thick catcher foil techniques,the mean forward recoil ranges have been measured for the residues produced from interaction of copper with 20 -46MeV/u 12Cions.From these data,linear momentum transfer for central collisions has been extracted. The linear momentum transfer per incident nucleon attains a maximum value of 155MeV/c at approximately 27.5MeV/u.The maximum excitation energy of the composite system is found to be 2.5MeV/u.

关 键 词：厚靶 厚收集箔 中心碰撞 碳12+铜 靶余核 

分 类 号：O562.5[理学—原子与分子物理]