Electric field strengths and ion trajectories in sharp-edge field ionization sources

Brailsford, David F.

Abstract

On the presumption that a sharp edge may be represented by a hyperbola, a conformal transformation method is used to derive electric field equations for a sharp edge suspended above a flat plate. A further transformation is then introduced to give electric field components for a sharp edge suspended above a thin slit. Expressions are deduced for the field strength at the vertex of the edge in both arrangements. The calculated electric field components are used to compute ion trajectories in the simple edge/flat-plate case. The results are considered in relation to future study of ion focusing and unimolecular decomposition of ions in field ionization mass spectrometers.

Citation

Brailsford, D. F. (1970). Electric field strengths and ion trajectories in sharp-edge field ionization sources. Journal of Physics D: Applied Physics, 3,

• Journal Article Type: Article
• Publication Date: Jan 1, 1970
• Deposit Date: Aug 4, 2005
• Publicly Available Date: Oct 9, 2007
• Journal: Journal of Physics D: Applied Physics
• Print ISSN: 0022-3727
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 3
• Keywords: Field ionization, Mass spectrometry, conformal transformations, electric field strengths, sharp edges.
• Public URL: https://nottingham-repository.worktribe.com/output/1025857
• Additional Information: Totally re-built and re-typeset pre-publication "final draft"of this paper