重铬酸钾（银）剂量计

POTASSIUM DICHROMATE DOSIMETER

研究了重铬酸钾（银）剂量计的剂量学性能。确定了重铬酸钾溶液在４４０ｎｍ下的线性摩尔吸收系数为４６．５２ｍ￣２·ｍｏｌ￣（－１）；剂量计辐照温度系数为－０．２２％／℃；Ｇ（）值为３．９１×１０￣（－８）ｍｏｌ·Ｊ￣（－１）；剂量转换因子为５．７４×１０￣４Ｇｙ。测量总不确定度为±４％（２σ）。

The dosimetry of potassium dichromate dosimeter is investigated.The linear molar ab-sorbance coefficient at 440 nm of potassium dichromate solution is determined being 46.52m￣2/moland the temperature coefficient of the dosimeter during irradiation is-0.22%/℃, The measuredG value,dose-absorbance conversion factor are 3 91 ×10￣(-8)mol /J and 5.74 ×10￣4 Gy,respectively,The total unceriainty estimated as 4% (95% confidence).