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Issue 9, 2003
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Development and characterization of an electrostatic quadrupole extraction lens for mass spectrometry

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Abstract

A new ion optical element for mass spectrometry has been developed to increase ion-beam transmission into the high-vacuum region of a mass spectrometer. The optic, termed the electrostatic quadrupole extraction lens (EQEL), incorporates quadrupole-like focusing fields into a conventional extraction element. These fields have been established by purposefully positioning openings in an extraction optic and surrounding the optic with a solid, cylindrical barrel unit. Modeling of the EQEL optic shows several regions of high ion beam transmission while, experimentally, the EQEL provides a 35-fold improvement over a conventional extraction optic when used with a glow discharge Mattauch–Herzog geometry mass spectrograph.

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Article information


Submitted
14 Feb 2003
Accepted
29 May 2003
First published
09 Jul 2003

J. Anal. At. Spectrom., 2003,18, 1015-1018
Article type
Paper

Development and characterization of an electrostatic quadrupole extraction lens for mass spectrometry

J. H. Barnes IV, G. D. Schilling, M. B. Denton, D. W. Koppenaal and G. M. Hieftje, J. Anal. At. Spectrom., 2003, 18, 1015
DOI: 10.1039/B301784B

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