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~(135)Cs(T_(1/2)=2.3×10~6a)在很多研究领域都是非常重要的核素,尤其在环境研究领域。在中国原子能科学研究院的HI-13串列加速器上开展了~(135)Cs的加速器质谱测量方法研究。为压低~(135)Ba的干扰,对铯的不同化合物样品进行了不同离子的引出实验。实验结果列于表1、2。从表1、2可看出,CsF_2~-和Cs~-都可用于~(135)Cs的加速器质谱测量。同时,对铯的不同化合物引出不同离子时,~(135)Ba的本底水平进行了AMS测量,结果列于表3。实验结果表明:采用CsNO_3作为测量样品,
~ (135) Cs (T 1/2 (1/2) = 2.3 × 10 ~ 6a) are very important nuclides in many fields of study, especially in the field of environmental studies. A new method for the mass spectrometry of ~ (135) Cs was developed at HI-13 tandem accelerator at China Institute of Atomic Energy. In order to reduce the interference of ~ (135) Ba, different ions were extracted from different samples of cesium. The experimental results are shown in Tables 1 and 2. It can be seen from Table 1 and Table 2 that both CsF_2 ~ - and Cs ~ - can be used for accelerator mass spectrum measurement of ~ (135) Cs. At the same time, different compounds of cesium lead to different ions, the background level of ~ (135) Ba was measured by AMS, the results are shown in Table 3. The experimental results show that: using CsNO_3 as the measurement sample,