Related Experiment Video
Updated: May 5, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
A new method for electrostatic ion deflection
B Wolf1, P D Mudgett, R D Macfarlane
1Department of Chemistry, Texas A&M University, 77843, College Station, TX.
Abstract:
A new approach to electrostatic ion deflection is described where an electrostatic particle guide (EPG) operating with reversed polarity is used to deflect ions in a cylindrical geometry about the axis of a time-of-flight mass spectrometer. The method has advantages over the standard parallel-plate deflector geometry in that it is more effective in deflecting ion beams that have a significant radial velocity component. The device is being used in (252)cs Cf plasma desorption mass spectrometry ((252)cs Cf -PDMS) experiments in an on/off mode to record neutral particle spectra and in a synchronized pulsed mode to reduce the magnitude of the uncorrelated background in the time-of-flight spectrum. Radial distribution functions have been measured for various EPG voltages. Its use as a background suppression technique is demonstrated by using the (252)cs Cf-PDMS spectrum of insulin. (28-36).
More Related Videos
Related Concept Videos
The Electrical Double Layer
Electrostatic Boundary Conditions in Dielectrics
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
Electrostatic Boundary Conditions
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
Interfacial Electrochemical Methods: Overview
Theory of Strong Electrolytes
Electrochemical Systems

