Abstract
A gridless variation of the cylindrical ion mirror has been designed to create an electric field that is nonlinear in the axial direction and nearly homogeneous in the radial direction. The designs may include one or two chambers that consist of truncated cones. This new design concept yields ion mirrors with improved energy focusing over conventional single-field and multiple-field mirrors. Conventionally, ion mirrors with nonlinear field gradient use multiple diaphragm electrodes to which distinct voltages are applied. In this work, optimized nonlinear field distributions are achieved through shaping only two or three electrodes and applying only one or two voltages on the electrodes. The designs presented here offer high resolving power and low ion dispersion. SIMION simulations of performance from the ion source to the detector demonstrate resolving powers of 11 000 and 1750 for ions with kinetic energy variations of 7.5% and 23.6%, respectively.
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References
Zhang, J.; Enke, C. G.J. Am. Soc. Mass Spectrom. 2000,11, 759–764.
Karaev, V. I.; Mamyrin, B. A.; Shmikk, D. V.; Zagulin, V. A.Sov. Phys. Tech. Phys. 1972,16, 1177–1179.
Mamyrin, B. A.; Karaev, V. I.; Shmikk, D. V.; Zagulin, V. A.Sov. Phys. JETP 1973,37, 45–48.
Mamyrin, B. A.; Shmikk, D. V.Sov. Phys. JETP 1979,49, 762–764.
Gohl, W.; Kutscher, R.; Laue, H-J.; Wollnik, H.Int. J. Mass Spectrom. Ion Phys. 1983,48, 411–414.
Grix, R.; Kutscher, R.; Li, G.; Gruner, U.; Wollnik, H.Rapid Commun. Mass Spectrom. 1988,2, 83–85.
Berger, C.Int. J. Mass Spectrom. Ion Phys. 1983,46, 63–66.
Frey, R.; Weiss, G.; Kaminski, H.; Schlag, E. W. Z.Naturforsch., A: Phys., Phys. Chem., Kosmophys. 1985,40, 1349–1350.
Walter, K.; Boesl, U.; Schlag, E. W.Int. J. Mass Spectrom. Ion Processes 1986,71, 309–313.
Kutscher, G.; Grix, R.; Li, G.; Wollnik, H.Int. J. Mass Spectrom. Ion Processes 1991,103, 117–128.
Bergmann, T.; Martin, T. P.; Schaber, H.Rev. Sci. Instrum. 1990,61, 2592–2600.
Cornish, T. J.; Cotter, R.J. Anal. Chem. 1997,69, 4615–4618.
Yoshida, Y.U. S. Patent 4, 625, 112, 1984.
Cornish, T. J.; Cotter, R.J. Rapid Commun. Mass Spectrom. 1993,7, 1037–1140.
Cornish, T. J.; Cotter, R.J. Rapid Commun. Mass Spectrom. 1994,8, 781–785.
Ji, Q.; Davenport, M. R.; Enke, C. G.; Holland, J. F.J. Am. Soc. Mass Spectrom. 1996,7, 1009–1017.
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Zhang, J., Gardner, B.D. & Enke, C.G. Simple geometry gridless ion mirror. J. Am. Soc. Spectrom. 11, 765–769 (2000). https://doi.org/10.1016/S1044-0305(00)00146-X
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DOI: https://doi.org/10.1016/S1044-0305(00)00146-X