Chemical Ionisation in a High Resolution Mass Spectrometer for Real Time Analysis
Résumé
The use of a permanent magnet to generate a constant magnetic field in an FTICR mass spectrometer has many advantages :
compacity : (60 x 80 x 120) cm-reasonable weight : less than150 kg-transportability
no power supply required for the magnet, no expensive cooling fluids,
maintenance free Magnet design : Halbach cylinders
nominal magnetic field : 1.1 Tesla
good magnetic field homogeneity : variation < 10-3 in the ICR cell volume
Mass resolution of 70000 @ 131 uma was obtained with this configuration.
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