A new dual injection system for AMS facility

被引：4
作者：
Liu, Lin
Zhou, Weijian
Cheng, Peng
Yu, Huagui
Chen, Maobai
机构：
[1] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] Xi An Jiao Tong Univ, Xian 710049, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 259卷 / 01期
基金：
中国国家自然科学基金;
关键词：
new dual injection system; Wien filter; AMS; recombinator;
D O I：
10.1016/j.nimb.2007.01.160
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In order to measure long-lived radioisotopes such as Be-10 with high sensitivity using an HVEE model 4130 AMS system, as well as to guarantee C-14 measurements of high precision, a new dual injection system for the AMS system is proposed. The proposal is to add a Wien filter located between the ion source system and the recombinator of the HVEE model 4130. When a pulsing voltage is optionally applied to the Wien filter, a sequential injection mode is turned on. The isotopes would alternately pass on different trajectories through the recombinator. When the pulsing voltage and magnetic field are turned off, the Wien filter acts as a field-free drift space and the standard simultaneous injection mode is on. Beam optics calculation show that the new dual injection system will increase the number of radio-nuclides which can be analyzed, keep the high precision capability for radiocarbon dating and achieve high sensitivity for Be-10 and Al-26 measurements, together with simplifying the layout as compared to existing dual-injector and dual high-energy beam line systems. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：208 / 212
页数：5
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