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Updated: Aug 18, 2026

Recapitulation of an Ion Channel IV Curve Using Frequency Components
Published on: February 9, 2011
Phase synchronization of an ion ensemble by frequency sweep excitation in Fourier transform ion cyclotron resonance
Abstract:
The Fourier transform ion cyclotron resonance (FT-ICR) signal is produced by the coherent motion of a population of ions. The ability to produce a well-defined ion packet by excitation of an initially random ion ensemble is a major limiting factor of high mass FT-ICR. Ions must be both resonant and in phase with the applied radio frequency excitation field to be accelerated to radii suitable for detection by FT-ICR. Synchronization of the phase angles of an ensemble of ions occurs by off-resonant acceleration during frequency swept excitation. Results from computer-simulated ion trajectories suggest that phase synchronization of the ion packet prior to resonant excitation results in better spatial definition of the ion ensemble.
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