The radioactivity measurement method using a calorimeter uses the 1st law of thermodynamics. Because of the characteristic of heat energy, the calorimeter is not affected by the geometry of the source. It is also expected that high-level radioactivity can be measured. However, because the measurement range of the calorimeter differs from other radiation detectors, studies are being conducted to secure the possibility of radioactivity measurement. A comparison between the triple-to-double coincidence ratio and calorimeter was performed using ³²P, a pure beta-emitter.

中文翻译：

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使用等温微量热计进行放射性测量的可能性

使用热量计的放射性测量方法使用热力学第一定律。由于热能的特性，热量计不受热源几何形状的影响。预计还可以测量高水平放射性。但是，由于热量计的测量范围不同于其他辐射探测器，因此正在进行研究以确保放射性测量的可能性。使用³² P（一种纯 β 发射器）对三重符合比和热量计进行了比较。