摘要
利用金硅面垒探测器测量低剂量率的F离子在生物组织样品（洋葱内表皮和芸豆种皮）中的透射能谱，用来研究荷能离子在生物样品中的能损和深度分布。实验中F离子能量为900keV—6MeV，剂量率大约为104ions／s·cm2；用SEM观测样品在离子束轰击下可能发生的损伤。实验中测量了不同能量离子在样品中的透射能谱，利用SINRA对测量得到的透射能谱进行了拟合分析，并讨论了生物样品的特殊结构对透射能谱和离子深度分布测量结果的影响。
In order to study energetic ion range and depth profile in biological samples,transmission spectra of F ions through kidney beau coat samples and onion innersurface membrane samples have been measured with a silicon surface detector. Theion beam energy ranged from 900keV to 6MeV at a low dose rate of about 104ions/s'cm2; SEM experiment was carried out to observe sample's topography after ionirradiation. The spectra were simulated by using computer software SINRA. Theinfluence of biological sample's special structure and composition on ion space rangeand depth profile was discussed.
出处
《核技术》
CAS
CSCD
北大核心
1999年第8期449-453,共5页
Nuclear Techniques
基金
国家自然科学基金
北京大学青年科学基金
关键词
离子注入
生物效应
透射行为
辐射生物学
Ion implantation, Biological effect, Transmission measurement
