团簇离子在固体中能损的非线性效应  

Nonlinear Effect of Energy Loss for Swift Hydrogen Cluster Ions in Solids

作　　者：杨朝文[1] 缪竞威[1] 杨百方[1] 师勉恭[1] 刘晓东[1] 

机构地区：[1]四川大学辐射物理及技术教育部重点实验室

出　　处：《原子核物理评论》2002年第2期231-233,共3页Nuclear Physics Review

基　　金：国家自然科学基金资助项目 ( 19975 0 34;19975 0 33;10 175 41)~~

摘　　要：研究了每核子能量为 2 6 0— 4 5 0keV的H+ 2 ,H+ 3 ,H+ 4 H+ 5和H+ 7团簇离子在金膜中的能损 .发现团簇离子中平均每个质子的能损大于相同速度的单质子能损 ,即能损比大于 1,且随团簇离子的大小和速度的增加而增加 .The energy losses of cluster ions H + 2, H + 3, H + 4, H + 5 and H + 7 with energy of 260-450 keV/p in solid films have been measured. It has been found that the energy loss per proton in clusters is larger than that of single proton with the same velocity as clusters, that is, the energy ratio is larger than 1. Energy ratio increases with increasing the cluster size and velocity.

关 键 词：团簇离子 固体 能损 非线性效应 原子物理学 

分 类 号：O562[理学—原子与分子物理]