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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 performance of a potassium dichromate (silver) dosimeter was studied. The linear molar absorption coefficient of potassium dichromate solution at 440 nm was 46.52 m 2 · mol -1. The radiation temperature coefficient of dosimeter was -0.22% / ℃. The G () value was 3 .91 × 10 ~ (-8) mol · J ~ (-1), and the dose conversion factor was 5.74 × 10 ~ 4Gy. The total measurement uncertainty is ± 4% (2σ).