Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9844906 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 18 Pages |
Abstract
This paper describes theoretical modeling of electrostatic lenses based on three, four and five closely spaced cylindrical electrodes. In each case, modeling is carried out numerically using commercial packages SIMION and LENSYS, and a variety of performance parameters are obtained. Special cases such as a zoom lens (i.e., lenses whose magnification may be changed without losing focus) are considered. Results are obtained as a function of the ratios of the electrode lengths and gaps, and as a function of ratios of the controlling voltages. As a result, how a multi-element lens system can be operated with the whole focal properties in a useful mode for experimental studies is shown.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Omer Sise, Melike Ulu, Mevlut Dogan,