NDLI: Bradbury-Nielsen vs. Field switching shutters for high resolution drift tube ion mobility spectrometers

Content Provider	Springer Nature Link
Author	Kirk, Ansgar T. Zimmermann, Stefan
Copyright Year	2014
Abstract	A key component in the design of every drift tube ion mobility spectrometer (IMS) is the ion shutter which controls the injection of ions into the drift tube. Especially, compact drift tube IMS require very short injection pulses to achieve high resolution and therefore require fast ion shutters. Thus, it is important to find an ion shutter principle that can be readily scaled towards these short injection widths without causing major non-idealities in the injection process, such as drift field inhomogeneities, ion loss and ion discrimination by mobility. In this paper, we compare different ion shutter principles, foremost the Bradbury-Nielsen gate and a field switching design. It is shown through theoretical considerations and field simulations that the Bradbury-Nielsen shutter is more universally applicable and typically less complex for long injections widths but field inhomogeneities associated with its operating principle impede the scaling process. Thus, the currently less used field switching shutters will become the superior principle when very short injection widths are required, as this shutter principle allows for single digit microsecond widths.
Starting Page	131
Ending Page	137
Page Count	7
File Format	PDF
ISSN	14356163
Journal	International Journal for Ion Mobility Spectrometry
Volume Number	17
Issue Number	3-4
e-ISSN	18654584
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-05-17
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Ion mobility spectrometry High resolution Ion shutter Bradbury-Nielsen Field switching Analytical Chemistry Physical Chemistry Molecular Medicine Proteomics Ecotoxicology Safety in Chemistry, Dangerous Goods
Content Type	Text
Resource Type	Article
Subject	Spectroscopy

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