An isobar separation method with Q3D magnetic spectrometer for AMS
An isobar separation method with Q3D magnetic spectrometer for AMS
复制标题
一种基于 Q3D 磁谱仪的 AMS 等压线分离方法
DOI：
10.1016/j.nima.2010.07.065
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发表时间：
2010-10
影响因子：
1.4
通讯作者：
Wang, Wei
中科院分区：
文献类型：
--
作者：
He, GuoZhu;Wu, Shaoyong;Dong, Kejun;Wang, Xianggao;He, Ming;Gong, Jie;Liu, Jiancheng;Li, Shizhuo;Li, Chaoli;Shen, Hongtao;Jiang, Shan;Wang, Wei
等压干扰是AMS测量的主要障碍，特别是在很强的等压干扰情况下，如32 Si、53 Mn、60 Fe、63 Ni等的测量。基于（Δ E-Q ~ 3D）方法，可以在Q ~ 3D磁谱仪焦平面上的感兴趣核素区域内，大幅度地剔除同量异位素事例。结果，等压干扰可以减少三个数量级以上。通过在收集感兴趣的核素的位置处放置多阳极电离室，可以进一步减少同量异位素干扰。用上述原子序数为14 ~ 42的核素对Δ E-Q3 D系统的同量异位素分离性能进行了测试。结果表明，Δ E-Q3 D方法具有较强的等压线分离能力。
Isobar interference is the main obstacle for AMS measurement, especially in the case of very strong isobaric interference, such as in the measurement of32Si,53Mn,60Fe,63Ni, etc. An isobar separation method with Q3D magnetic spectrometer was developed aiming at AMS measurements for the above-mentioned nuclides. Based on a method of (ΔE-Q3D) the isobaric events can be largely rejected from the region of the nuclide of interest on the focal plane of a Q3D magnetic spectrometer. As a result, the isobaric interference can be reduced by more than three orders of magnitude. Further reduction of isobaric interference can be achieved by the use of a multi-anode ionization chamber placed at the position of collecting the nuclide of interest. The performance of the ΔE-Q3D system for isobar separation was tested by the above-mentioned nuclides with atomic numbers from 14 to 42. The results showed that ΔE-Q3D method has strong capability for separating isobars, as detailed in this paper.
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DOI：
10.1016/s0168-583x(00)00224-x
发表时间：
2000-10
影响因子：
1.3
作者：
U. Morgenstern;L. K. Fifield;A. Zondervan
通讯作者：
U. Morgenstern;L. K. Fifield;A. Zondervan
影响因子：
56.9
作者：
A. Shukolyukov;G. Lugmair
通讯作者：
A. Shukolyukov;G. Lugmair
DOI：
10.1051/rphysap:0197700120100154300
发表时间：
1977-10
期刊：
--
影响因子：
--
作者：
R. Sayer
通讯作者：
R. Sayer
影响因子：
56.9
作者：
Münker;Weyer;Mezger;Rehkämper;Wombacher;Bischoff
通讯作者：
Münker;Weyer;Mezger;Rehkämper;Wombacher;Bischoff
影响因子：
5.3
作者：
H. Craig;B. Somayajulu;K. Turekian
通讯作者：
H. Craig;B. Somayajulu;K. Turekian