The measurements of Cs isotopic ratios by TIMS were performed for the sample analysis used to evaluation of the nuclear data of 135Cs. To obtain a high intensity and stable ion beam, the effects of additive agents on the ionization of Cs were examined. The effect of silicotungstic acid on the ionization of Cs was the largest among the additive agents discussed in this study, while this also showed the largest isobaric interference of polyatomic ions. After examining of the analytical conditions, such as the interference effect due to Ba, the sample analysis of two radioactive Cs samples were conducted.

中文翻译：

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用热电离质谱法测量铯同位素比，用于 135Cs 的中子俘获反应研究

通过 TIMS 测量 Cs 同位素比率用于样品分析，用于评估 135Cs 的核数据。为了获得高强度和稳定的离子束，研究了添加剂对 Cs 电离的影响。在本研究讨论的添加剂中，硅钨酸对 Cs 电离的影响最大，同时这也表明多原子离子的同量异位干扰最大。在检查了分析条件（例如 Ba 的干扰效应）后，对两个放射性 Cs 样品进行了样品分析。