【摘要】 利用为模拟荷能重离子在组织等效气体中能量沉积分布研究而设计的无壁正比计数器系统对２５ＭｅＶ／ｕ４０Ａｒ１４＋离子在组织等效气体中沿其径向及纵向的相对能量沉积分布进行了研究，分别在６．４ｋＰａ及０．５ｋＰａ气压下模拟了细胞核大小（相当于５μｍ）及超螺线管大小（相当于０．４μｍ）的分布情况，并讨论了实验结果。更多还原

【Abstract】 Bothh radial and longitudinal energy deposition distributions along the track of 25MeV/u 40 Ar 14+ ions in tissue equivalent gas have been studied by a wall less proportional counter system Two gas pressure values of 6 4kPa and 0 5kPa,simulating 5μm(size of a nucleus)and 0 4μm(size of a supersolenoid)respectively,were chosen to perform the experiment A brief discussion was given更多还原