核电子学与探测技术

测氡仪是最常用的空气中氡浓度测量手段,仪器的响应会因环境等因素而发生变化。上海市计量测试技术研究院的氡测量仪检定装置2008至2009年对测氡仪检定/校准的结果显示,约三分之一的测氡仪其相对固有误差超过±10%,校准因子的年变化超过5%,表明测氡仪定期的检定/校准是保障测氡仪器氡浓度测量结果准确可靠的必要前提。

Radon monitor is the most useful method for measuring radon concentration in the air,but the response of the monitor changes due to the different environments.The standard radon measurement system at Shanghai Institute of Measurement and Testing Technology(SIMT)dose calibration for the radon monitors regularly. When taking the data of the samples from 2008 to 2009,the results shows,about 1/3 of the samples, their inherent errors of the correction factors are over±10%,and the yearly fluctuation over 5%,which means,for the high confidence on the radon concentration measurement results,the regular calibration of the radon monitor is necessary and needed.