切伦科夫计数法测量β放射性核素的研究
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摘要: 用一台国产的液闪测量装置,开展了切伦科夫计数法测量水溶液中β放射性核素的方法学研究。对一些影响测量的因素,如样品体积、淬灭效应和β粒子能量等进行了研究。实验发现,几乎不引起淬灭,而一些有色离子淬灭严重,特别是Cr ̄(3+)离子。Abstract: STUDY ON THE ASSAY OF βRADIONUCLIDES USING CERENKOV COUNTINGLIU DAMING;GUO JINGRU;ZHANG SHULAN;LIU DAMING;CUI ANZHI(China Institute of Atomic Energy,P.O. Box 275(26),Beijing 102413)ABSTRACT A method for the assay of βemitting nuclides in aqueous solution by Cerenkov counting isstudied using a home-made liquid scintillation equipment.Effects of sample volume,quenchingand energy of β particles on experimental results are studied.It is found that some coloured ions,especially Cr~(3+),cause serious quenching of Cerenkov emission but NO_3 ion hardly does.Key words Cerenkov counting βradionuclide Quenching
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