Characteristics of electrical field and ion motion in surface‐electrode ion traps |
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| Authors: | Xiaoyu Zhou Gaoping Xu Caiqiao Xiong Rui Chen Haoxue Qiao Zongxiu Nie |
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| Affiliation: | 1. Department of Physics, Wuhan University, , Wuhan, 430072 China;2. Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, , Beijing, 100190 China;3. Beijing National Laboratory for Molecular Sciences, , Beijing, 100190 China;4. School of Sciences, Jiujiang University, , Jiujiang, 332005 China;5. Beijing Center for Mass Spectrometry, , Beijing, 100190 China |
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| Abstract: | In this article, we calculated the potential function of the surface‐electrode ion trap (SEIT) by using Green's function method, optimized trap size, obtained the coefficients of the multipoles and analyzed ion trajectories in the RF potential. The optimized SEIT not only increases its trapping well depth by a factor of about 15, but also has relatively good linearity of the field (or large quadrupole component). The current design of SEIT can work well either as the ion guide for ion transmission or as the ion trap for ion confinement. Our research can be used to calculate the potential function in the SEIT with different device parameters, understand ion motions in the traps and optimize instrument performance. The method for calculating potential function can be expanded to planar and halo ion traps. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | Surface‐electrode ion trap electrical potential trapping well depth field center multipoles |
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