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Mass peak shape improvement of a quadrupole mass filter when operating with a rectangular wave power supply
Author(s) -
Luo Chan,
Jiang Dan,
Ding ChuanFan,
Konenkov Nikolai V.
Publication year - 2009
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.4186
Subject(s) - chemistry , quadrupole , quadrupole mass analyzer , rod , amplitude , filter (signal processing) , ion , stability (learning theory) , power (physics) , modulation (music) , atomic physics , analytical chemistry (journal) , optics , physics , acoustics , medicine , alternative medicine , organic chemistry , pathology , machine learning , chromatography , computer science , quantum mechanics , computer vision
Numeric experiments were performed to study the first and second stability regions and find the optimal configurations of a quadrupole mass filter constructed of circular quadrupole rods with a rectangular wave power supply. The ion transmission contours were calculated using ion trajectory simulations. For the first stability region, the optimal rod set configuration and the ratio r / r 0 is 1.110–1.115; for the second stability region, it is 1.128–1.130. Low‐frequency direct current (DC) modulation with the parameters of m = 0.04–0.16 and ν = ω /Ω = 1/8–1/14 improves the mass peak shape of the circular rod quadrupole mass filter at the optimal r / r 0 ratio of 1.130. The amplitude modulation does not improve mass peak shape. Copyright © 2009 John Wiley & Sons, Ltd.