Calculation of Electric Field Strengths at a Sharp Edge

Brailsford, David F. and Robertson, Andrew J. B. (1968) Calculation of Electric Field Strengths at a Sharp Edge. International Journal of Mass Spectrometry and Ion Physics, 1 . pp. 75-85.

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Sharp edges were first used for field ionisation mass spectrometry by Beckey. Although Cross and Robertson found that etched metal foils were more effective than razor blades for field ionisation, blades are very convenient for determination of field ionisation mass spectra, as reported by Robertson and Viney. The electric field at the vertex of a sharp edge can be calculated by the method of the conformal transformation. Here we give some equations for the field deduced with the assumption that the edge surface can be approximated by a hyperbola. We also compare two hyperbolae with radii of curvature at the vertex of 500 Angstrom and 1000 Angstrom with the profile of a commercial carbon-steel razor blade.

Item Type:Article
Additional Information:This paper has been totally re-built and re-typeset into a "final draft" form PDF
Uncontrolled Keywords:Field ionization, conformal transformations, mass spectrometry, electric fields, razor blades
Schools/Departments:Faculty of Science > School of Computer Science
Faculty of Science > School of Chemistry > Department of Physical Chemistry
Faculty of Science > School of Mathematical Sciences
ID Code:160
Deposited By:Brailsford, David
Deposited On:04 Aug 2005
Last Modified:22 Jun 2011 08:33

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