BH3103B型X-γ剂量率仪测量的影响因素及其不确定度评定

发布时间：2018-04-12 19:46

  本文选题：不确定度 + 剂量率仪　； 参考：《苏州大学》2013年硕士论文

【摘要】：目的： 探讨BH3103B型X-Y剂量率仪测量的影响因素及其不确定度评定。 方法： 选择环境温度稳定的地下室试验电池电压对BH3103B型X-Y剂量率仪测量的影响；选择空间开阔、温度变化明显且人员活动稀少的楼层楼顶对BH3103B型X-Y剂量率仪进行稳压供电,试验环境温度对仪器测量的影响。由试验所得数据对BH3103B型X-Y剂量率仪进行不确定度评定,并对结果进行验证。 结果： 1.仪器在9.0V标准电压下剂量率指示误差为(-1.5%-+3.1%)。 2.电压在8.0V-9.2V范围内对仪器测量结果引起的误差为(-13.2%～+0.9%)。 3.温度在10-40℃范围内对仪器测量结果引起的误差为(-3.4%-+37.9%)。 4.BH3103B型X-Y剂量率仪的扩展不确定度为36.6%,(k=2)。 结论： (1)北京核仪器厂生产的BH3103B型X-Y剂量率仪明显受到测量条件电池电压和环境温度的影响。 (2)电压试验表明,该仪器用电池供电不能满足连续8小时的工作。 (3)在实际测量过程中,对温度的影响要进行修正。 (4)BH3103B型X-Y剂量率仪不满足《环境地表Y辐射剂量率测定规范》(GB/T14583-93)中的规定,但其测量结果在其测量不确定度范围内。
[Abstract]:Objective:The factors affecting the measurement of BH3103B X-Y dosimeter and its uncertainty evaluation were discussed.Methods:The influence of the battery voltage on the measurement of the BH3103B X-Y dosimeter is selected, and the floor roof with open space, obvious temperature change and few personnel activities is chosen to supply the BH3103B X-Y dosimeter with steady voltage.The influence of test environment temperature on instrument measurement.The uncertainty of BH3103B X-Y dosimeter was evaluated by the experimental data, and the results were verified.Results:1.The error of indicating the dose rate of the instrument at 9.0V standard voltage is -1.5- 3.1.2.The error caused by the voltage in the range of 8.0V-9.2V is from -13.2to 0.9.3.The error caused by the measurement results of the instrument in the temperature range of 10-40 鈩，

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