The Ion Conveyor. An ion focusing and conveying device.
The control and transmission of ions or small charged droplets in the intermediate to high-pressure regime is of primary importance in areas such as atmospheric pressure ionisation. Where small apertures separate differentially pumped vacuum regions in the inlet systems to mass spectrometers, a large proportion of the available ion current is lost to the surrounding electrode structures. A new ion-optical device, named the ion conveyor, incorporating electrodynamic focusing and conveying of charged entities is described. Results from ion-optical simulations are presented demonstrating the performance of the device in various operating modes and electrode configurations.
Colburn
Alex W
AW
Institute of Mass Spectrometry and Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom.
Giannakopulos
A E
AE
Derrick
Peter J
PJ