摘要
用 Ｒａｍａｎ（拉曼）散射技术分析了 １２０ｋｅＶ的 Ｈ， Ａｒ和 Ｆｅ离子在 Ｃ６０薄膜中引起的辐照效应，主要指由晶态向非晶态的转变．分析结果表明，在Ｆｅ和Ａｒ离子辐照的Ｃ６０薄膜中，核碰撞主导了由晶态向非晶态的转变过程．而在Ｈ离子辐照的情况下，电子能损起主导作用，并发现在Ｈ离子辐照过程中，电子能损有明显的退火效应，致使由晶态向非晶态转变的过程中，经历了一个石墨化的中间过程。
Irradiation effecs, mainly including transformation from crystalline into amorphous state, of C, films induced by 120keV H, Ar and Fe ions irradiation were analysed by means of Raman scattering technique. The results indicate that amorphization process in the cases of Ar and Fe ions irradiation is dominated by nuclear collision, but in the case of H ion irradiation, the process is dominated by electronic energy transfer. The annealing effect of electronic energy loss which induced the intermediate graphitization process before amorphization in lower irradiation dose ranging from 2 X 10_14 ions/cm^2 to 5 X 10_16 ions /cm^2 was found in the case of H ion irradiation for the first bine.
出处
《高能物理与核物理》
CSCD
北大核心
2000年第1期82-86,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金!19675054
中国科学院九五重点项目!KJ952-S1-423
甘肃省自然科学基金!ZR-95
关键词
辐照效应
低能离子
退火效应
碳60薄膜
irradiation effect C_60 film, low energy ions, annealing effect
