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作 者:卢希庭[1] 翟勇军[1] 夏宗璜[1] 郑涛[1] 沈定予[1] 王雪梅[1] 赵强[1] 赵子强[1]
机构地区:[1]北京大学技术物理系和重离子物理研究所,北京100871
出 处:《原子核物理评论》2000年第2期72-76,共5页Nuclear Physics Review
基 金:核工业科学基金资助项目!( H7196AY0 0 0 8)&&
摘 要:用金标记卢瑟福背散射法测量了 2 .0~ 5.4Me V的 12 C离子在蒸镀在 K4玻璃衬底上的 Al膜中的能量歧离 .由实验得出了零表面粗糙度的能量歧离 .本结果与The energy straggling of 2.0~5.4 MeV carbon ions in aluminum films evaporated onto K4 glass substrates was measured with the Au marked RBS method. The surface roughness with zero was obtained from experiment. It supplied a method for determination of the surface roughness with zero. The present result was compared with the Bohr theory and the results of published experimental work It is shown that the Bohr theory is not appropriate to description of the energy straggling of low energy heavy ion in films, and the surface roughness could seriusly affect the energy straggling. We have to pay more attention to both points mentioned above in the ion beam analyses, ion implantations and some nuclear physics expriments.
分 类 号:O571.33[理学—粒子物理与原子核物理]
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