重离子与生物等效材料核反应产生的碎片剂量  

Fragment dose produced by the nuclear reaction of heavy ions interacted with tissue-equivalent biological material

作　　者：党秉荣[1] 卫增泉 李文建[1] 李强[1] 袁世斌[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《核电子学与探测技术》2004年第4期342-345,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助(19905013)

摘　　要：采用55MeV/u40Ar17+离子束研究了其与生物等效材料作用在不同角度产生的核碎片的分布情况,同时对各角度碎片剂量给出了相对的估计量。结果表明,碎片的剂量应主要考虑0°角的贡献,而大角度的贡献可以忽略,这一结果为理论计算深度剂量曲线,考虑核碎片引起的剂量提供了实验依据。In the paper, the distribution of fragment produced by 55MeV/u ^(40)Ar()^(17+) ions beam with tissue-equivalent biological material was investigated at different angles. At the same time, the relative estimation of fragment dose at different angles and total dose were given. The results show that the fragment dose concentrates at 0°. The fragment dose can be ignored at large angle area. It is experimental basis to consider the fragment dose in dose-depth curve calculation.

关 键 词：重离子治疗肿瘤 核碎片 碎片剂量 生物等效材料 

分 类 号：R815[医药卫生—放射医学]