Quadrupole mass filter operation under the influence of magnetic field

Syed, SUAH, Maher, S and Taylor, S ORCID: 0000-0002-2144-8459 (2013) Quadrupole mass filter operation under the influence of magnetic field. JOURNAL OF MASS SPECTROMETRY, 48 (12). pp. 1325-1339.

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Abstract

This work demonstrates resolution enhancement of a quadrupole mass filter (QMF) under the influence of a static magnetic field. Generally, QMF resolution can be improved by increasing the number of rf cycles an ion experiences when passing through the mass filter. In order to improve the resolution, the dimensions of the QMF or the operating parameters need to be changed. However, geometric modifications to improve performance increase the manufacturing cost and usually the size of the instrument. By applying a magnetic field, a low-cost, small footprint instrument with reduced power requirements can be realized. Significant improvement in QMF resolution was observed experimentally for certain magnetic field conditions, and these have been explained in terms of our theoretical model developed at the University of Liverpool. This model is capable of accurate simulation of spectra allowing the user to specify different values of mass spectrometer dimensions and applied input signals. The model predicts enhanced instrument resolution R>26,000 for a CO2 and N2 mixture with a 200-mm long mass filter operating in stability zone 3 via application of an axial magnetic field.

Item Type:	Article
Additional Information:	alt_title: Quardupole mass spectrometer operation under the influence of magnetic field Date: 2012 (completed)
Uncontrolled Keywords:	quadrupole mass filter (QMF), resolution, magnetic field, U/V ratio, ion trajectories
Subjects:	?? TK ??
Depositing User:	Symplectic Admin
Date Deposited:	08 Aug 2012 11:28
Last Modified:	16 Dec 2022 04:36
DOI:	10.1002/jms.3293
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/5533