ArticleJournal of the American Society for Mass Spectrometry2016
Reducing Space Charge Effects in a Linear Ion Trap by Rhombic Ion Excitation and Ejection.
Article in Journal of the American Society for Mass Spectrometry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- A nature-inspired ion trap for parallel manipulation of ions on a massive scale.Science advances · 2026Article
- Simulation Study of a Hyperbolic Linear Ion Trap with Asymmetric Curvature Radii.Journal of the American Society for Mass Spectrometry · 2026Article
- Algorithm for Selecting Organic Compounds to Verify the Resolution of Electron Ionization Mass Spectrometers.Mass spectrometry (Tokyo, Japan) · 2025Article
- Single Analyzer Precursor Ion Scans in a Linear Quadrupole Ion Trap Using Orthogonal Double Resonance Excitation.Journal of the American Society for Mass Spectrometry · 2017Article
- Successive Resonances for Ion Ejection at Arbitrary Frequencies in an Ion Trap.Journal of the American Society for Mass Spectrometry · 2016Article
- Ion Isolation in a Linear Ion Trap Using Dual Resonance Frequencies.Journal of the American Society for Mass Spectrometry · 2016Article
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Authors and funding
7 authors.
Funding
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Abstract
Space charge effects play important roles in ion trap operations, which typically limit the ion trapping capacity, dynamic range, mass accuracy, and resolving power of a quadrupole ion trap. In this study, a rhombic ion excitation and ejection method was proposed to minimize space charge effects in a linear ion trap. Instead of applying a single dipolar AC excitation signal, two dipolar AC excitation signals with the same frequency and amplitude but 90° phase difference were applied in the x- and y-directions of the linear ion trap, respectively. As a result, mass selective excited ions would circle around the ion cloud located at the center of the ion trap, rather than go through the ion cloud. In this work, excited ions were then axially ejected and detected, but this rhombic ion excitation method could also be applied to linear ion traps with ion radial ejection capabilities. Experiments show that space charge induced mass resolution degradation and mass shift could be alleviated with this method. For the experimental conditions in this work, space charge induced mass shift could be decreased by ~50%, and the mass resolving power could be improved by ~2 times at the same time. Graphical Abstract ᅟ.
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