~(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,尤其是在核材料在环境中的扩散研究中。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。为提高测量灵敏度,本次实验选取铁粉作为一种新的导电材料。分别对CsNO_3+Ag、CsNO_3+Fe、Ag粉和Fe粉4种样品进行了Cs~-离子的引出实验,结果列于表1。同时,在引出Cs~-离子的 ~ (135) Cs (T 1/2 (1/2) = 2.3 × 10 ~ 6a) are very important nuclides in many fields of study, especially in the study of the diffusion of nuclear materials in the environment. 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 improve the measurement sensitivity, this experiment chose iron powder as a new conductive material. Cs ~ - ions were extracted from four samples of CsNO_3 + Ag, CsNO_3 + Fe, Ag powder and Fe powder, respectively. The results are shown in Table 1. At the same time, leads to Cs ~ - ions