ArticleJournal of the American Society for Mass Spectrometry2013
Can the effective potential of a linear quadrupole be extended to values of the Mathieu parameter q up to 0.90?
Article in Journal of the American Society for Mass Spectrometry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Ion-Neutral Collision Effects on Ion Trapping and Pseudopotential Depth in Ion Trap Mass Spectrometry.Journal of the American Society for Mass Spectrometry · 2019Article
- Nonlinear Ion Harmonics in the Paul Trap with Added Octopole Field: Theoretical Characterization and New Insight into Nonlinear Resonance Effect.Journal of the American Society for Mass Spectrometry · 2016Article
- A Theoretical Method for Characterizing Nonlinear Effects in Paul Traps with Added Octopole Field.Journal of the American Society for Mass Spectrometry · 2015Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The motion of ions in a linear quadrupole is usually described by solutions to the Mathieu equation. A simplifying approximation to this theory that is widely used for low values of the Mathieu parameters a and q describes ion motion in an effective potential. In this work, we have calculated the effective potential for any q from displacements of calculated ion trajectories caused by a dipole DC electric field. It is assumed that the dipole DC electric field at the center of the displaced trajectory is countered by an "effective" electric field. For all q values, the effective electric field is found to increase linearly with the distance from the center of the quadrupole. The trapping forces probed in this way increase continuously with q up to the first stability region boundary at q=0.908. The well depth (D) at any q can be described by D = q[V(rf)/c], where c=3.955±0.005, very similar to the standard effective potential model with c=4.000.
Identifiers
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Registered trials
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