^(12)C和^(20)Ne离子剂量分布的Geant4模拟  

Gean4-based simulation of depth-dose for ^(12)C and ^(20)Ne ion

作　　者：王振超[1] 关世荣[1] 张慧[1] 梅雪松[1] 庞杨[1] 赵琳[1] 

机构地区：[1]黑龙江省科学院技术物理研究所第三研究室,哈尔滨150086

出　　处：《黑龙江科学》2016年第7期8-9,共2页Heilongjiang Science

摘　　要：利用Geant4程序模拟光子和重离子在水中的输运过程,并模拟计算80-430Me V/u^(12)C、^(20)Ne在人体等效组织水中的剂量分布。分别讨论^(12)C、^(20)Ne离子的线性能量传递(LET)的特性。结果表明,重离子与物质相互作用时,横向散射小,与^(12)C相比^(20)Ne离子在水中射程短,剂量分布高。Trajectory of photon and heavy-ion in water were simulated via Geant4. Depth-dose distribution of ^12C ion and ^20Ne ion in water were computed at 80-430MeV/u. The LET characteristics of ^12C ion and ^20Ne ion were discussed. It was found that when the heavy ion interacted with matter it practically travel in a straight path. Compare to ^12C ion, ^20Ne ion had shorter range and more depth-dose in water.

关 键 词：GEANT4 重离子 剂量 LET 

分 类 号：O571.33[理学—粒子物理与原子核物理]