【摘要】 采用同位素稀释法由10Be标准参考物质SRM 4325制备系列10Be/9Be标准样品,在北京HI-13串列加速器的AMS系统上对该系列标准(n(10Be)/n(9Be)范围为2.68×10-11~2.38×10-12)进行测量。测量结果显示,n(10Be)/n(9Be)测量值与标称值呈良好线性关系,且归一化后的测量值与标称值吻合。该系列标准可用于北京HI-13串列加速器的AMS系统对地质环境样品中10Be/9Be绝对比值的准确测定。更多还原

【Abstract】 By dilution of ¹⁰Be reference material（SRM 4235） with natural beryllium,the ¹⁰Be/⁹Be standard samples were prepared to be used as AMS standard.4 ¹⁰Be/⁹Be samples with n(¹⁰Be)/n(⁹Be) range from 2.68×10^-11 to 2.38×10^-12 were checked by AMS at the HI-13 tandem in CIAE.The measured results show the excellent linear relationship between measured values and respective nominal values for ¹⁰Be/⁹Be standard samples.Moreover,normalized measured values are in good agreement with their nominal values.The prepared ¹⁰Be/⁹Be standard samples can be used for accurate AMS measurements of environmental ¹⁰Be/⁹Be.更多还原