摘要
文章报道了用PR-CN(PVB)辐射显色薄膜测量电子吸收剂量的某些重要的剂量学特性:在0.3-120kGy范围内,吸收剂量(D)与单位厚度光密度变化(ΔOD/mm)有良好的线性关系;电子能量的依赖性小,^(147)Pm和^(90)Sr+^(90)Y响应之比约为1:2.4;对中能以上的电子剂量响应在实验误差范围内、与电子平衡条件下^(60)Co γ辐射剂量响应相同;在实验用到的平均剂量率范围内(约0.1—5×10~4Gy/min),响应和剂量率无关。建立了用于电子束工业辐射加工的吸收剂量常规刻度方法。最后给出了测量静电加速器1.5MeV、电子迴旋加速器6.9MeV电子束在有机玻璃中深部剂量分布的实例。
In the paper the following radiometric properties of PR-CN (PVB)radiochremic dye film dosimeter for the measurement of electron beam absorbeddose are reported; a good linear function that exists between the change in opticaldensity per unit thickness and absorbed dose in the range of 0.3 k--120kGy; asmall energy dependence; the ratio of response for ^(147)Pm and ^(90)Sr plus ^(90)Y toidentical dose which is about 1:2.4; equivalent response for gamma rays from^(60)Co and electrons with the high energy; no dose rate effects over a wide rangeof dose and dose rate; A routine method for calibration is established andexamples for measuring the depth dose distributions for electron beams from two kinds of accelerators are given.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1990年第3期27-34,共8页
Atomic Energy Science and Technology
基金
中国原子能科学研究院(IAE)与国际原子能机构(IAEA)签订的科研合同
并取得资助合同号为No.4236/RB
关键词
辐射
显色
剂量计
电子
剂量学
Radiochromic dosimeter
Electron absorbed dose
Radiation processing
Energy dependence of response
