摘要
为实现用LaBr_3(Ce)γ谱仪实时监测反应堆回路水中裂变产物,对该谱仪系统在裂变产物放射性核素测量中的几个关键问题进行研究。着重研究了裂变核素的选择、高能端效率刻度、符合相加修正、脉冲堆积及谱仪的稳谱等问题。通过实验测试与MC计算相结合方法,获得了初步的解决方案,进一步提高LaBr_3(Ce)探测器在一回路水放射性核素分析、燃料元件破损监测、核事故条件下放射性监测等方面的准确度。
Several key issues of a LaBr3 （Ce） γ spectrometer system for the measurement of fission products were studied to satisfy the real - time monitoring requirement of primary coolant. The selection of radionuclides in the fission products,high energy efficiency calibration,coincidence summing correction,pulse pileup and the stabilization of spectrometer were the key concerns. Some preliminary solutions were obtained by the method of experimental tests combined with Monte Carlo calculation. The ongoing solving key problems are important for im- proving the reliability with the LaBr3 （Ce） γspectrometer in the radionuclides analysis of primary coolant, the damage monitoring of fuel element and radionudides monitoring in nuclear accident, et al.
出处
《核电子学与探测技术》
CAS
北大核心
2015年第5期523-526,共4页
Nuclear Electronics & Detection Technology
基金
国家自然科学基金(41174089)
江西省高等学校教学改革研究课题(JXJG-13-6-1)资助
关键词
裂变产物
效率刻度
符合相加修正
死时间校正
稳谱
fission products
efficiency calibration
coincidence summing correction
dead time correction
spectrum stabilization
作者简介
覃国秀（1981-），男，壮族，广西南宁市人，讲师，博士研究生，主要从事核技术及其应用研究。
