The use of linear quadrupoles in mass spectrometry as mass filters and ion guides is
reviewed. Following a tutorial review of the principles of mass filter operation, methods of …

The quadrupole ion trap is widely used in the chemical physics community for making
measurements on dynamical systems, both intramolecular (eg ion fragmentation reactions) …

The theoretical foundation for the digital ion trap (DIT) is presented in outline where the
study of ion motion in the DIT employed the a, q, β parameter framework of conventional ion …

Small ice particles play an important role in atmospheric and extraterrestrial chemistry.
Circumplanetary ice particles that are encountered by space probes at hypervelocities play …

Secular frequency scanning is implemented and characterized using both a benchtop linear
ion trap and a miniature rectilinear ion trap mass spectrometer. Separation of …

Rationale Secular frequency scanning is a method of mass selectively scanning ions out of
a quadrupole ion trap by linearly ramping the frequency of the resonance ejection signal …

The performance of a segmented quadrupole mass filter operated with rectangular
waveforms and capacitively coupled rectangular waveforms applied to the prefilters was …

We report a pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS) method capable
of analyzing traditional East Asian papers. The method proposed is based on rapid and …

Quadrupole mass filters (QMFs) are usually not used to analyze high m/z ions, due to the
low frequency resonant circuit that is required to drive them. Here we describe a new …

Rationale Mass spectra can be recorded using ion traps by scanning the frequency of an
alternating current (ac) signal that corresponds to the secular frequency of a trapped ion …