标准编号：ISO 11929-4:2020
中文名称：电离辐射测量的特性限值的测定（判定阈值、探测极限和覆盖区间的极限） 基础和应用 第4部分：应用指南
英文名称：Determination of the characteristic limits (decision threshold, detection limit and limits of the coverage interval) for measurements of ionizing radiation — Fundamentals and application — Part 4: Gui
发布日期：2020-09
标准范围
This document specifies a procedure, in the field of ionizing radiation metrology, for the calculation of
the “decision threshold”, the “detection limit” and the “limits of the coverage interval” for a non-negative
ionizing radiation measurand when counting measurements with preselection of time or counts are
carried out. The measurand results from a gross count rate and a background count rate as well as from
further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net
count rate as the difference of the gross count rate and the background count rate, or the net activity of
a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by
other factors.
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