国产超低本底液闪谱仪性能评价与对比研究  

A Comparative Study and the Assessment of the Test Performance of a Domestic Low-Level Liquid Scintillation Spectrometer

作　　者：沙向东 黄彦君[1] 张海英 张兵[1] 曾帆[1] 郭贵银[1] SHA Xiang-dong;HUANG Yan-jun;ZHANG Hai-ying;ZHANG Bing;ZENG Fan;GUO Gui-yin(Suzhou Nuclear Power Research Institute Co.,Ltd.,Suzhou Jiangsu 215004,China)

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004

出　　处：《核电子学与探测技术》2020年第6期960-964,共5页Nuclear Electronics & Detection Technology

摘　　要：对国产超低本底液闪谱仪的本底、效率、优值因子、重复性、稳定性等主要性能进行分析测试,并与国外同类产品主要性能进行比对。分析测试表明:国产超低本底液闪谱仪在主要性能参数方面整体上优于国外同类产品,国产超低本底液闪谱仪具备的独特的绝对测量技术,可作为国外有关液闪谱仪的替代产品。The liquid scintillation spectrometer(LSC)is one of the most commonly-used large-scale apparatus for radioassay of radioactivity.The most popular LSCs in China are the Quantu-lus 1220 provided by PE Inc.in USA,and LB7 provided by Aloka in Japan.In recent years,a domestic enterprise had developed a new LSC with the product model of LSA3000 and was extended in China,which had the advantage of TDCR technology that allowed one to performed both relative measuring and absolute measurement.This paper focused on the comparative study and the assessment of the test performance of the three LSCs in our laboratory based on the experiences in recent years?including the background,detection efficiencies,the figure of merit(E2/B),repeatability,long-term stability.Meanwhile,in allusion to the TDCR technology of LSA3000,the accuracies were determined by using several typical standard materials.The overall study indicated that the performance of the LSA3000 is superior to the other two LSCs,and it is expected to raise the long-term stabilities with the continuous update according to the market feedback.Meanwhile,considering the unique technology of TDCR,it is anticipated that LSA3000 could be an excellent alternative solution of LSC when the import ones are unavailable.

关 键 词：超低本底液闪谱仪 TDCR 本底 效率 稳定性检验 

分 类 号：TL84[核科学技术—核技术及应用]