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 language | English (US) |
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Pages (from-to) | 1015-1018 |
Number of pages | 4 |
Journal | Journal of Analytical Atomic Spectrometry |
Volume | 18 |
Issue number | 9 |
DOIs | |
State | Published - 2003 |
Externally published | Yes |
ASJC Scopus subject areas
- Analytical Chemistry
- Spectroscopy