【作者】 王萍； 苏容波； 吴涛； 谭昭怡； 李烨； 邱永梅； 孙宇；

【Author】 WANG Ping,SU Rong-bo,WU Tao,TAN Zhao-yi,LI Ye, QIU Yong-mei,SUN Yu (China Acadeny of Engineering Physics,Mianyang of Sichuan 621900,China)

【机构】 中国工程物理研究院核物理与化学研究所；

【摘要】 为建立反应堆铝合金样品中⁶³Ni活度测量的方法,对样品前处理流程的去污效果及液闪测量的相关问题进行了研究.在不含⁶³Ni的铝合金样品中加入一定量的杂质离子,通过前处理流程后对相应的杂质离子进行测量,确定去污因子。该流程对各种杂质离子的去污因子均为10²及以上。通过条件实验确定了⁶³Ni的液闪测量相关参数,包括样品液酸度、样品液与闪烁液体积比及镍载体的加入对测量效率的影响等。该方法的标准偏差0.11,相对标准偏差15.9%,方法检出限为3.15 Bq/g。更多还原

【Abstract】 In order to develop a new method of measuring ⁶³Ni in aluminium alloy samples in reactor,the decontamination effect of the pretreatment and the relative questions of measuring ⁶³Ni with the liquid scintillation counter were studied.In order to confirm decontamination factor,the corresponding impurity ions were measured after pretreated by joining some impurity ions to the aluminium alloy samples.Decontamination factor is more than 102 for every impurity ion.The correspond parameters of measuring ⁶³Ni with the liquid scintillation counter were researched,including the acidity,the volume ratio of the sample and the scintillant liquid as well as the effect of the measure efficiency by joining Ni carrier.The standard deviation is 0.11. The relatively standard deviation is 15.9%.The detection limit of the method is 3.15 Bq/g.更多还原