【作者】 包敏； 王群书； 师全林； 解峰； 王武尚；

【Author】 BAO Min;WANG Qun-shu;SHI Quan-lin;XIE Feng;WANG Wu-shang;Northwest Institute of Nuclear Technology;

【机构】 西北核技术研究所；

【摘要】 针对100 kt TNT当量地下核试验产生的熔岩玻璃体内半衰期大于1 d的放射性核素,计算了在核试验后10~300 000 d时间内核素衰变的热功率,评估了核素衰变热对熔岩玻璃体的温度和溶解速度的影响程度。计算结果表明:核素衰变热功率呈分段幂函数衰减;在10~2 000 d、2 000~60 000 d和60 000 d之后的时段内,衰变热功率分别主要源于短寿命裂变产物核素、长寿命裂变产物核素和锕系元素。核素衰变热对熔岩玻璃体的温度和溶解速度的影响程度不大,1 000 d后影响就非常小了。更多还原

【Abstract】 According to the radionuclides inventory in the melt glass produced by an underground nuclear test,the decay heat power was calculated to assess its effects to the temperature and dissolving rate of melt glass within 10~300 000 d after the test.From the calculation it can be concluded that the decay heat power is declined by power function.Short-lived fission products,long-lived fission products and actinides are the main contributions to the power at 10~2000 d,2000~60000 d and after 60000 d respectively.The influence to melt glass temperature and dissolution rate is indistinctive,especially after 1000 d.更多还原