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γ射线通过吸收物质时,射线强度将减弱,减弱的程度和吸收物质的密度有一定的关系。放射性密度计就是根据这个原理而设计的。设计人员的任务,是在满足确定的测量精度条件下,尽量减小放射源的强度。本文是在选定探测器和放射性核种的条件下,讨论连续测定矿浆密度时,确定放射源强度和选择测量管径的原则和方法,希望使放射性密度计的使用合理化。
When the γ-rays pass through the absorbing substance, the intensity of the rays will be weakened and the degree of attenuation will be related to the density of the absorbing substance. Radiometer is based on this principle and design. The task of the designer is to minimize the intensity of the radioactive source while meeting the specified measurement accuracy. In this paper, the principle and method of determining the intensity of radioactive sources and selecting the measuring pipe diameter when discussing the continuous determination of the density of the slurry under the conditions of the selected detectors and radionuclides is expected to rationalize the use of the radio-densitometer.