Analysis of Non-Linear Ion Drift in Spectrometers of Ion Mobility Increment with Cylindrical Drift Chamber

Abstract

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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