Comparison and interconversion of the two most common frequency-to-mass calibration functions for Fourier transform ion cyclotron resonance mass spectrometry
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Ion cyclotron resonance
Cyclotron resonance
The use in Fourier-transform ion cyclotron resonance (FTICR) mass spectrometry of the collision-induced dissociation of proton-bound dimers, the kinetic method or Cooks's method, is tested. This method is compared with the proton-transfer equilibrium method. Good agreement between the two methods is observed. Advantages and limitations of the FTICR kinetic method are briefly discussed.
Ion cyclotron resonance
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Collision-induced dissociation
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Fourier transform spectroscopy
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Cyclotron resonance
Ion cyclotron resonance
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Ion cyclotron resonance
Organometallic Chemistry
Cyclotron resonance
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Abstract External ion accumulation in a two‐dimensional (2D) multipole trap has been shown to increase the sensitivity, dynamic range and duty cycle of a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer. However, it is important that trapped ions be detected without significant bias at longer accumulation times in the external 2D multipole trap. With increasing ion accumulation time pronounced m/z discrimination was observed when trapping ions in an accumulation quadrupole. In this work we show that superimposing lower rf‐amplitude dipolar excitation over the main rf‐field in the accumulation quadrupole results in disruption of the m/z discrimination and can potentially be used to achieve unbiased external ion accumulation with FTICR. Copyright © 2001 John Wiley & Sons, Ltd.
Ion cyclotron resonance
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Penning trap
Ion trapping
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Ion cyclotron resonance
Quadrupole ion trap
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Ion cyclotron resonance
Penning trap
Highly charged ion
Krypton
Electron cyclotron resonance
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Electron cyclotron resonance
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Selected ion monitoring
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Abstract A Fourier‐transform mass spectrometric technique for detecting ion cyclotron resonance signals at multiple cyclotron frequencies is proposed and initial experimental results are presented. The technique is readily adapted to existing instruments.
Ion cyclotron resonance
Cyclotron resonance
Selected ion monitoring
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Ion cyclotron resonance
Selected ion monitoring
Cyclotron resonance
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