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A preliminary study of direct Be-10(2+) counting in AMS using the super-halogen anion BeF3-
Fu Yun-Chong1,2; Zhang Li1,2; Zhou Wei-Jian1,2,3; Zhao Xiao-Lei1,2,4; Wu Zhen-Kun1,2; Zhao Guo-Qing1,2; Liu Qi1,2; Lu Xue-Feng1,2,3; Zhao Wen-Nian2,3; Huang Chun-Hai2,3
2015-10-15
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN0168-583X
卷号361期号:2015页码:207-210
文章类型Article
摘要

The key to effective Be-10 measurements by AMS is to efficiently suppress the interference of the isobar B-10 and at the same time optimize Be-10 transmission. In this work, a new approach of measuring Be-10 by AMS has been studied. It uses the super-halogen anion of beryllium, BeF3-, which inherently suppresses B-10 interference by nearly 5 orders of magnitude because the accompanying BF3- anion is rarely formed. The resulting B-10 suppression factor is not as high as that achieved with energy degrader foils, but the B-10 and Be-10 separation in the final ionization detector was found to result in sufficient total B-10 suppression for Be-10(2+) to be counted directly at similar to 6 MeV energies. Although the stripping yield from (BeF3-)-Be-10 to Be-10(2+) is not as large as that from (BeF3-)-Be-10, this inefficiency is compensated by avoiding the reduction in transmission due to charge fraction splitting and optical transmission losses after the degrader foil. This paper summarizes our first observation of the direct Be-10(2+) counting approach using the 3 MV multi-element system at the Xi'an AMS. (C) 2015 Elsevier B.V. All rights reserved.

关键词Super-halogen Anion Bef3- Be-10 Ams
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1016/j.nimb.2015.03.084
关键词[WOS]Electron-affinities ; Superhalogens ; Sediment ; Ice
收录类别SCI
语种英语
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear
WOS记录号WOS:000363345900040
出版者ELSEVIER SCIENCE BV
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9226
专题加速器质谱中心
通讯作者Fu Yun-Chong
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
2.Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Xian 710049, Peoples R China
4.Univ Ottawa, AE Lalonde AMS Lab, Ottawa, ON K1N 6N5, Canada
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Fu Yun-Chong,Zhang Li,Zhou Wei-Jian,et al. A preliminary study of direct Be-10(2+) counting in AMS using the super-halogen anion BeF3-[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2015,361(2015):207-210.
APA Fu Yun-Chong.,Zhang Li.,Zhou Wei-Jian.,Zhao Xiao-Lei.,Wu Zhen-Kun.,...&Huang Chun-Hai.(2015).A preliminary study of direct Be-10(2+) counting in AMS using the super-halogen anion BeF3-.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,361(2015),207-210.
MLA Fu Yun-Chong,et al."A preliminary study of direct Be-10(2+) counting in AMS using the super-halogen anion BeF3-".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 361.2015(2015):207-210.
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