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The Development of the Digital Ion Trap.

Li Ding1, Lulu Sun2, Weimin Wang1

  • 1School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, China.

Mass Spectrometry Reviews
|March 19, 2026
PubMed
Summary

Digital ion traps (DITs) use digital signals for trapping fields, offering performance advantages in mass analysis. This review covers DIT history, stability, and new analytical functions.

Keywords:
digital ion trapdigital ion trap commercializationduty cyclefrequency scanrectangular waveformstability diagram

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Area of Science:

  • Analytical Chemistry
  • Physical Chemistry
  • Instrumental Analysis

Background:

  • Ion traps are crucial for mass spectrometry.
  • Traditional ion traps use analog signals for trapping fields.
  • Digital signals offer potential advantages for ion trap performance.

Purpose of the Study:

  • To review the research history and development of digital ion traps (DITs).
  • To summarize studies on ion motion stability and secular frequency in DITs.
  • To outline the performance benefits and novel analytical capabilities of DIT technology.

Main Methods:

  • Review of historical research on rectangular wave-driven quadrupole fields.
  • Analysis of ion motion stability and secular frequency in 3D and 2D DIT configurations.
  • Comparison of stability diagrams based on different parameter definitions.

Main Results:

  • Digital ion traps (DITs) utilize rectangular waveforms from digital signals.
  • Differences in stability diagrams arise from varying definitions of a and q parameters.
  • DITs demonstrate performance advantages in mass analysis, enabling novel analytical functions.

Conclusions:

  • Digital ion trap technology represents a significant advancement in ion trapping.
  • The digital driving method offers enhanced performance and new analytical possibilities.
  • Commercial DIT instruments are emerging, indicating technological maturity.