GB/T 24247-2009 in English

《GB/T 24247-2009测定放射性核素用电离室系统的校准和使用》由TC30（全国核仪器仪表标准化技术委员会）归口，TC30SC1（全国核仪器仪表标准化技术委员会通用核仪器和辐射探测器分会）执行，主管部门为国家标准化管理委员会。
本标准规定了使用现行可得到的各种电离室确定放射性核素活度的定量技术。
本标准的应用限于包含井型电离室作探测器的仪器,它是一个复合系统,包括电离室以及与其总体连接的、将电离室电流变换为以活度为单位读出的合适电路。
本标准为得到准确度不超过±6%而重复性不大于2%(通常对大于3.7×106 Bq(100μCi)的放射源)的测量提供方法。

Scope

This International Standard specifies quantitative techniques for determining the activity of radionuclides using various currently available ionization chambers. The application of this standard is limited to instruments incorporating a well-type ionization chamber as a detector, which is a composite system consisting of an ionization chamber and suitable circuitry integrally connected with it to convert the ionization chamber current into a readout in units of activity. This standard provides methods for obtaining measurements with an accuracy not exceeding ±6% and a repeatability not greater than 2% (usually for radioactive sources greater than 3.7 × 10⁶Bq (100μCi)).