误差理论在石材放射性测量中的应用

APPLICATION OF ERROR THEORY TO GRANITE VENEER RADIOACTIVE MEASURE

本文应用数学理论讨论了石材放射性测量计数的统计误差,结果表明,延长测量时间可提高测量精度。在规定的时间内,测量样品放射性的时间和测量本底的时间之比等于放射性总计数和本底计数率之比的平方根时,测量结果的误差为最小。

A mathematical theory was used for investigating the statistical error of Granite Veneer radioactive count. This result indicates that the more time of measurement, the better the results. Within the fixed time, when a ratio of measured time for radioactive sample to background equals the ratio of square root of radioactive count for radioactive sample to background, there are minimal measure errors.