Application of ^41Ca Tracer and Its AMS Measurement in CIAE

The man-made calcium isotope ^41Ca is an ideal tracer for the study of calcium metabolism. We represent the first application of accelerator mass spectrometry (AMS) measurement of ^41Ca tracer in China. The technique is being applied to the research field of cell messenger at the China Institute of Atomic Energy (CLAE). The sample preparation methods and the AMS measurements are discussed and some interesting results are presented.     

182Hf实验室参考标准的研制与加速器质谱测量

介绍了用于HI-13串列加速器质谱(AMS)测量的¹⁸²Hf实验室参考标准的研制. 通过¹⁸⁰Hf的连续热中子俘获产生¹⁸²Hf, 用热电离质谱对初始参考标准的同位素比进行了精确测量. 取一定量的初始参考标准, 加入已知量的稳定同位素(¹⁸⁰Hf)作为稀释剂, 通过逐级稀释的方法, 最终得到同位素比从10^－6—10^－10的一系列参考标准. 并对该系列参考标准进行了AMS测量, 结果显示¹⁸²Hf/¹⁸⁰Hf的测量值与标称值呈良好的线性关系, 说明该AMS系统可以准确测量同位素比在10^－6—10^－10范围内的样品.