Abstract

European Journal of Mass Spectrometry
Volume 12 Issue 3, Pages 153–160 (2006)
doi: 10.1255/ejms.796

Analysis of non-linear ion drift in spectrometers of ion mobility increment with cylindrical drift chamber

A.A. Elistratov,^a S.V. Shibkov^a and E.N. Nikolaev^b
aThe Institute for Cryptosystems, Communication and Informatics, Moscow
^bThe Institute for Energy Problems of Chemical Physics Russian Academy of Science, Moscow

A model for the drift of ions under a non-uniform, high-frequency electric field in the drift chamber of a spectrometer of ion mobility increment is developed. For the general dependence of the ion mobility on the electric field strength and the general time-dependence of the separating voltage, we suggest a procedure for calculating of the ion peak form. The shape of the peak for the ion focusing and defocusing conditions has been obtained.

Keywords: ion mobility, theory, FAIMS, differential ion mobility

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