80MeV/u ^(16)O+Fe反应中靶碎片的产额研究  

Study of Yields for Target Fragments From the Reaction of Iron With 80MeV / u^(16)O Ions

作　　者：李文新[1] 赵莉莉[2] 秦芝[2] 孙彤玉[2] 安部静子 大久保嘉高 岩本正子 小林羲男 安部文敏 H.Maeda 

机构地区：[1]中国科学院上海原子核研究所,上海201800 [2]中国科学院近代物理研究所,兰州730000 [3]日本理化学研究所

出　　处：《高能物理与核物理》1999年第6期523-528,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19475056

摘　　要：使用核化学技术测量了80MeV／u16O离子和天然铁反应中25个靶碎片的生成截面．根据这些数据导出了电荷分布和质量分布．实验结果和以前发表的数据进行了比较，指出A＝48质量链的电荷分布宽度参数σz和最可见电荷Zp随轰击能量增加而略微增加．根据高能核反应的极限碎裂和因子化概念讨论了靶碎片的质量产额分布．Produchon yields were determined for 25 abet fragments produced from the reaction of iron with 80 MeV/u 16O ions. From these data, charge distribution and mass yield distribution have been deduced. The experimental results are compared with those reported from our previous work. It is found that the width parameter σz and the most probable charge Zp of the charge distribution increase slowly with increasing bombarding energy. The mass yield distribution is discussed in terms of the concepts of limiting fragmentation and factorization.

关 键 词：核反应 中能 电荷分布 氧16 极限碎裂 产额 铁 

分 类 号：O571.426[理学—粒子物理与原子核物理]