Method of the Spectrometry of Ion Mobility Increment for Spectrometers with Cylindrical Drift Chamber

Eur. J. Mass Spectrom. DOI: 10.1255/ejms.796

Method of the Spectrometry of Ion Mobility Increment for Spectrometers 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

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 calculation 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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