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

James H. Barnes IV, Gregory D. Schilling, M. Bonner Denton, David W. Koppenaal, Gary M. Hieftje

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1015-1018
Number of pages4
JournalJournal of Analytical Atomic Spectrometry
Volume18
Issue number9
DOIs
StatePublished - Dec 1 2003

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

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