Ion trap

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Orange Book Entry

A device that permits the ejection of ions with a m/z ratio less than a prescribed value and retention of those with higher mass. It depends on the application of radio frequency voltages between a ring electrode and two end-cap electrodes to confine the ions in a circular path. The choice of these voltages determines the m/z ratio below which ions are ejected. Unlike the Ion Cyclotron Resonance Spectrometer no magnetic field is required for the operation of the ion trap.


Related Terms

First Stability Region

Linear Ion Trap

Mass Selective Axial Ejection

Mass Selective Instability

Mathieu Stability Diagram

Paul Trap

Penning Ion Trap

Resonance Ion Ejection

Secular Frequency

Quadrupole Ion Storage Trap (Quistor)