治疗水平 0.6cm^3 电离室研究

The Development of 0 6cm 3 Therapy Level Ionization Chamber

本文从理论上研究了用于治疗水平电离辐射测量的０．６ｃｍ３电离室，并通过实验验证了不同材料和几何尺寸对电离室的能量响应的影响。研制的电离室具有相当好的能量响应，在６０到２５０ｋＶ的能量范围内响应的变差极限小于３％。电离室的其他性能也完全满足要求。

Abstract An ionization chamber with sensitive volume of 0 6cm 3 used in radiotherapy level radiation measurement has been studied.The effects of different materials and sizes on the ionization chamber are illustrated by experiments.The energy response of the ionization chamber is satisfied,with changes less than 3% from 60 to 250kV.