Measurement of ¹⁵¹Sm with the HI-13 accelerator mass spectrometry system

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• 作者：Xinyi Yin ; Ming He ; Kejun Dong ; Shaoyong Wu ; Jinsong Zhang ; Jilong Zhang ; Tongxin Wang ; Anzhi Cui ; Yinggen Ouyang ; Zhiyong Zhang ; Jian Yuan ; Shan Jiang
• 关键词：¹⁵¹Sm ; Rare earth elements (REEs) ; Sample preparation ; Accelerator mass spectrometry (AMS) ; Biological tracing
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2010
• 出版时间：15 May 2010
• 年：2010
• 卷：268
• 期：10
• 页码：1689-1691
• 全文大小：241 K

文摘

¹⁵¹Sm is an interesting nuclide in many research fields. Measurement methods of the long-lived ¹⁵¹Sm with accelerator mass spectrometry have been developed at China Institute of Atomic Energy. The chemical form of samples was Sm₂O₃ and the extracted ion was SmO⁻. To date, the sensitivity, that is, the isotopic ratio, of ¹⁵¹Sm measured using accelerator mass spectrometry is about 10⁻⁸. This method was also used to measure the concentration of tracer ¹⁵¹Sm in biological samples for clarifying whether the rare earth elements can enter into the brain. It is not possible at present to determine whether the tracer has penetrated the blood–brain barrier into the brain.