Further study on highly sensitive AMS measurement of ⁵³Mn

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• 作者：Dong Kejun ; Hu Hao ; Wang Xianggao ; Li Chaoli ; He Ming ; Li Zhenyu ; Wu Shaoyong ; Liu Jiancheng ; Zheng Guowen ; Li Heng ; Chen Zhigang ; Liu Guangshan ; Yuan Jian ; Jiang Shan
• 关键词：AMS ; ¦¤E-Q3D detection system ; 53Mn measurements ; Suppression factor
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2012
• 出版时间：15 August, 2012
• 年：2012
• 卷：285
• 期：Complete
• 页码：57-60
• 全文大小：918 K

文摘

The AMS facility at China Institute of Atomic Energy has been equipped with a ¦¤E-Q3D detection system for the measurements of ⁵³Mn. While the sample material of MnO₂ and the extraction ions of MnO^? were used previously in AMS measurement of ⁵³Mn with fairly good results, a method has recently been developed with the extraction of MnF^? from ion source using MnF₂ and MnO₂ + PbF₂ as sample materials. As a result, a sensitivity of 10^?14 (⁵³Mn/Mn) has been achieved. Compared with the original MnO^?/MnO₂ approach, the method of MnF^? extraction, combined with ¦¤E-Q3D detection technique, demonstrated an improved sensitivity for AMS measurement of ⁵³Mn.