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High‐pressure ion trap mass spectrometry
Author(s) -
Whitten William B.,
Reilly Peter T. A.,
Ramsey J. Michael
Publication year - 2004
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1549
Subject(s) - chemistry , mass spectrometry , ion trap , trap (plumbing) , ion , ion mobility spectrometry–mass spectrometry , chromatography , analytical chemistry (journal) , selected reaction monitoring , tandem mass spectrometry , organic chemistry , environmental engineering , engineering
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 © 2004 John Wiley & Sons, Ltd.