Journal
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
Volume 18, Issue 15, Pages 1749-1752Publisher
JOHN WILEY & SONS LTD
DOI: 10.1002/rcm.1549
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The effects of buffer gas pressure on ion trap stability, mass resolution/calibration, and choice of mass scanning are described. Pressure effects were treated phenomenologically by adding a drag term to the ion equations of motion. The resulting collisional damping enlarges the mass-dependent stability region but reduces the region in which mass-selective resonance ejection can be performed. The pressure effects can be reduced by increasing the frequency of the alternating quadrupole field. Copyright (C) 2004 John Wiley Sons, Ltd.
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