Forms and Oscillations Modes of Ion Cloud in the Linear RF-only Quadrupole Traps and in Ion Traps
Abstract
Computer modelling of space configurations of ion clouds consisting of different m/z ions and dynamics of their motion in the presence of external(dipolar and quadrupolar) RF-field were analyzed. Forms of ion clouds in ion traps were obtained by molecular modelling. It was shown that stratification of different m/z ions appears as a result of interaction of ion clouds with RF fields and with each other. For ions with high charge q=30 e (electron) and mass m=30 000 m (proton) (electrosprayed protein ions in ion guides and ion traps) at ion densities ^10(exp 8)/cu cm stratification takes place even at room temperatures. Coalescence of ion resonance frequencies for light and heavy equally charged ions in Paul ion trap was also demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 2002
- Accession Number
- ADP012555
Entities
People
- A. A. Vedenov
- E. N. Nikolaev