Ion Motion Control-Experiments and Simulations
Goals and Motivation
Demonstrate the control of ion axial motion in the Orbitrap mass analyzer
- understand fundamental ion motion
- probe ion packet dynamics
- effect ion activation and tandem MS
- improve performance
Demonstrate and evaluate the new version of Ion Trajectory SIMulation program (ITSIM 6.0) for ion motion control experiments in the Orbitrap.
Methods
Experiments
- prototype orbitrap instrument
- apply AC on outer electrodes to drive (excite or de-excite) ion axial motion
Simulations
- generate 2D model of electrodes in AutoCAD, solve with COMSOL (FEMLAB)
- Import electric field information into ITSIM, run trajectories
Results
- Experiments demonstrate ability to control ion axial motion
- Simulations satisfactorily reproduce phenomena reported to date
last edited by admin on June 16th, 2009