Improvement on AMS measurement method for ¹⁸²Hf

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• 作者：Fei Tuo ; Xiangdong Ruan ; Ming He ; Shaoyong Wu ; Wei Wang ; Yueming Hu ; Yiwen Bao ; Yinggen Ouyang ; Qubo You ; Yuling Dou ; Guozhu He ; Shan Jiang
• 关键词：¹⁸²Hf ; Accelerator Mass Spectrometry (AMS) ; HfF₄ ; Injector ; Solid-phase reaction
• 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：April 2010
• 年：2010
• 卷：268
• 期：7-8
• 页码：776-778
• 全文大小：254 K

文摘

In order to improve the detection efficiency and sensitivity for ¹⁸²Hf measurement in HI-13 AMS systems at China Institute of Atomic Energy (CIAE), a new method was developed. Main features of the method include: (1) the installation of a new injection system with high mass resolution, (2) the establishment of a method based on solid-phase reaction to prepare HfF₄ samples from HfO₂. The experimental results show that the, mass resolution (M/ΔM) of the new injector system can reach nearly 700; the beam current of 180HfF5- ions from HfF₄ samples produced by solid-phase reaction is about two times higher than that of previous method.