【摘要】 在中国原子能科学研究院的重水研究堆上辐照了四组包覆颗粒燃料样品,每组分成两份,分别置于两个静态辐照罐中辐照到燃耗为0.394％fima和0.788％fima。辐照冷却后的样品进行了退火试验,测定了¹³³Xe和¹³¹I的释放率,测量值都在10^-6～10^-7。在同样的条件下测定了裸核芯的裂变产物释放率。包覆燃料颗粒的和裸核芯的裂变产物释放率之比在10^-5～10^-6。更多还原

【Abstract】 Four samples of coated fuel particles were irradiated in the Heavy-Water Research Reactor of the Institute of Atomic Energy. Each of them was divided into two groups and irradiated up to burn up of 0. 394 % fima and 0. 788 % fima in two static capsules, respectively. After irradiation and cooling, post irradiation annealing experiment was carried out, the release ratios of the fission product 133Xe and 131 were measured, they are in the order of 10-6-10-7. The fission product release ratio of naked kernel was also measured under the same conditions as for the coated fuel particles, the ratio of the fission product release of the coated fuel particles and of the naked kernel was in the order of 10-5-10-6.更多还原