Magazine Article

Efficient Ionizer for an Array of Mass Spectrometers

TBMG-6786

03/01/2000

Abstract
Content

An electron-beam ionizer has been designed to deliver ions to the entrance apertures of nine miniature quadrupole mass spectrometers in an array. A similar electron-beam ionizer could also be designed for an array of more or fewer mass spectrometers. Principal issues that had to be addressed in formulating the design were (1) generation of a collimated, suitably dimensioned electron beam that passes near all the entrance apertures so that ions are generated for each aperture at a sufficient rate; (2) application of suitable extraction potentials to nearby, suitably configured electrodes so that a large flux of ions can be extracted from the electron-beam region wherein the analyte is ionized; and (3) choosing a configuration and potentials for a system of electrostatic lenses (that is, assemblies of electrodes and apertures) to transport and focus the extracted ions into beams of desired diameters and kinetic energies that impinge on the entrance apertures of the mass spectrometers at the desired angles.

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Citation
"Efficient Ionizer for an Array of Mass Spectrometers," Mobility Engineering, March 1, 2000.
Additional Details
Publisher
Published
Mar 1, 2000
Product Code
TBMG-6786
Content Type
Magazine Article
Language
English