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用圆柱型流气式组织等效正比计数器测定了K 2 0 0kV低能重离子加速器提供的低能16O+离子束流在穿过 4μm厚的PET(C10 H8O4 )薄膜后的微剂量谱和径向剂量分布。测定了穿过不同厚度PET薄膜后的16O+ 束流的单次事件剂量平均比能zID随束流强度的变化曲线。用TIRM 92MonteCarlo程序计算了16O+ 离子在PET材料中的射程 ,与实验结果进行了比较和讨论
The micro-dosimetry and radial dose distribution of low-energy 16O + ion beam provided by K 2 0 0kV low energy heavy ion accelerator after passing through a 4 μm-thick PET (C10 H8O4) thin film were measured by using a cylindrical flow-type equivalent proportional counter. The mean specific energy (zID) of single event dose of 16O + beam passing through PET films with different thicknesses was measured as a function of beam intensity. The range of 16O + ions in PET material was calculated by TIRM 92MonteCarlo program and compared with the experimental results