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Pulsed axial activation in the ion trap: A new method for performing tandem mass spectroscopy (MS/MS)
Author(s) -
Lammert S. A.,
Cooks R. G.
Publication year - 1992
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.1290060809
Subject(s) - chemistry , quadrupole ion trap , ion trap , dissociation (chemistry) , ion , mass spectrometry , collision induced dissociation , analytical chemistry (journal) , tandem mass spectrometry , tandem , quadrupole , atomic physics , quadrupole mass analyzer , spectroscopy , internal energy , chromatography , materials science , composite material , physics , organic chemistry , quantum mechanics
A short DC voltage pulse is applied to one endcap of a quadrupole ion‐trap mass spectrometer to activate trapped ions. High internal‐energy deposition is achieved as evidenced by 91 + /92 + peak ratios in excess of 20 for dissociation of the n‐butylbenzene molecular ion. 1 The amount of internal energy can be controlled directly by vaarying the amplitude of the pulse. Dissociation efficiencies are less than those typically observed for collision‐induced dissociation in the ion trap and range from 50% at low internal energy deposition to 5% at maximum internal energy deposition.