一、引言辐照試样时的温度是研究輻照效应的重要参数之一,在反应堆中輻照时,影响的因素多而复杂。在一个实驗中,除要求准确測定輻照温度外,还要求同一组試样的輻照温度相同。起初我們用生产放射性同位素的輻照罐,盛装用棉綫縛成一束的数个小型拉伸試样,放入反应堆中輻照。在輻照过程中,試样的温度逐漸升高,致将棉线烧断,使得試样散乱地堆放在 I. INTRODUCTION The temperature at irradiation of samples is one of the most important parameters for studying the effects of irradiation. When irradiated in a reactor, the factors that affect it are many and complex. In one experiment, in addition to accurately measuring the irradiation temperature, it was also required that the same set of samples be irradiated at the same temperature. Initially we used radioactive canisters that produce radioisotopes to contain several small, tensile specimens tied together in cotton and placed in a reactor for irradiation. In the irradiation process, the sample temperature gradually increased, resulting in the cotton blown, making the sample scattered in the pile