低能^(14)N^(+1)离子微剂量学研究  

Experimental study of microdosimetry of low energy ^(14)N^+ ions

作　　者：朱连芳[1] 陈学兵[1] 贺榆生[1] 孙友梅[1] 李学宽[1] 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《核技术》2000年第1期6-10,共5页Nuclear Techniques

基　　金：国家自然科学基金!19575054

摘　　要：叙述了用圆柱型流气式组织等效正比计数器测定用Ｋ－２００ｋＶ低能重离子加速器加速的能量为６６—１１９ｋｅＶ的１４Ｎ+１离子穿过４μｍ厚的ＰＥＴ（Ｃ８０Ｈ８Ｏ４）薄膜后的微剂量谱、径向剂量分布等微剂量学参数。测定了穿过４μｍ厚的ＰＥＴ（Ｃ８０Ｈ８Ｏ４）薄膜后的１４Ｎ＋１离子的单次事件剂量平均比能马Ｚ１Ｄ随离子能量和强度的变化曲线。并与用ＴＩＲＭ９２Ｍｏｎｔｅ　Ｃａｒｌｏ程序计算的１４Ｎ＋１离子在ＰＥＴ材料中的射程一能量曲线进行了比较和讨论。Measurement of microdoshoetric spectrum and radial dose distribution of ~14N^+1ions with energy of 66-119keV after passing through a PET (C_80H_9O_4) film with athickness of 4 u m were presented. As a function of ~14N+1 ion energy and beamintensity I, the dose-mean specific energy by single event z1D was measured. Thedependance of ~14N^+1 ion range in PET film on ion energy was calculated by TIRM92Monte Carlo Program. The results of measurements and calculations were comparedand discussed.

关 键 词：重离子微剂量学 微剂量谱 辐射 生物诱变技术 

分 类 号：R144.1[医药卫生—公共卫生与预防医学] Q691.5[生物学—生物物理学]