摘要
为了研究带电粒子与活体细胞的相互作用,利用能量为2,2.5,3 Me V的质子外束,在室温环境下对厚约50 nm的氮化硅支持膜上的毕赤酵母菌进行辐照,并用金硅面垒探测器测量其透射能谱,通过对能量沉积特性的分析,表明质子外束穿过毕赤酵母菌后能损随入射能的增大而减小,但能量歧离随入射能的增大而增大。
To study the interaction of charged particles with biological living cells, we delivered 2, 2.5 and 3Me V protons outside vacuum as external beam at room temperature to irradiate yeast Pichia cells which are supported by 50 nm thick silicon nitride film and the transmission energy spectrum were measured by an Au-Si surface barrier detector to analyze energy deposition properties. The results demonstrate that the energy loss decreases with the incident protons energy increase, but the energy straggling increases with incident protons energy increase.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2016年第3期353-357,共5页
Nuclear Physics Review
基金
国家自然科学基金资助项目(11174116
11175075)~~
关键词
质子外束
活体细胞
氮化硅薄膜
能损
external proton
living cell
silicon nitride film
energy loss
