作者：杨杰斌, 黄秋, 黄平, 谭益宁, 杨勇, 张从华
作者单位：中国测试技术研究院, 四川 成都 610021
关键词：基准; 粒子发射率; 计量; 检定; 校准
摘要：
为解决目前在用的、平面放射源活度计量检定和校准问题,保障、污染检测仪的量值准确性,对2、2粒子发射率副基准装置进行深入研究,更新前置放大器、主放大器,研制大面积的流气正比计数装置和高速计数器,提高整个系统装置的分辨时间,拓展测量范围。该系统首次采用实时数据处理技术去除异常数据,提高测量结果的重复性,减小测量结果的不确定度。实验结果表明:整体装置系统稳定,测量过程实现自动化,优化数据处理、不确定度计算评估,为国内计量部门、专业实验室提供量值溯源和检测服务。
Research on key technologies in vice primary national standard of α and β emission rate in 2π sr
YANG Jie-bin, HUANG Qiu, HUANG Ping, TAN Yi-ning, YANG Yong, ZHANG Cong-hua
National Institute of Measurement and Testing Technology, Chengdu 610021, China
Abstract: In order to solve verification and calibration problems of the α and β plane source activity to ensure the accuracy of α and β contamination testing equipment, Vice primary national standard of α and β emission rate in 2π sr is researched deeply. Preamplifier and main amplifier are updated. The large area gas-flow proportional counter and high-speed counter are developed to improve time resolution of the whole system devices and expand the range of measurement. Real-time data processing techniques to remove the abnormal data is firstly used in the testing system software to improve the reproducibility of the measurement results and reduce measurement uncertainty. The whole device system is stable to automate data collection and optimize data processing and uncertainty assessment. It is used to provide traceability and testing services for domestic metrology departments and professional laboratories.
Keywords: primary national standard; particle emission rate; metrology; verification; calibration
2014, 40(5): 1-4 收稿日期: 2014-3-17;收到修改稿日期: 2014-5-5
基金项目: 国家重大科学仪器设备开发专项(2013YQ090811);中央补助地方科技基础条件专项(JG2008023Z)
作者简介: 杨杰斌(1965-),男,四川成都市人,高级工程师,主要从事基准、标准、工程等领域的计量测试与研究工作。
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