<sup>10</sup>Be/<sup>9</sup>Be标准样品的制备和加速器质谱测量

¹⁰Be/⁹Be标准样品的制备和加速器质谱测量

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。

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.