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The Investigation of True and a Focal Zoom-Lens Properties of Five-Element Cylindrical Electrostatic Lens | ||
| Rafidain Journal of Science | ||
| Article 6, Volume 21, Issue 3, 2010, Pages 50-56 PDF (0 K) | ||
| DOI: 10.33899/rjs.2010.37329 | ||
| Authors | ||
| Zahra M. Al-Hialey; Marwa T. Al-Shamma; Nedhal S. A-Hujazie | ||
| Abstract | ||
| In the present work , a computational investigation has been considered on the true and a focal zoom-lens (i.e. lenses whose magnification may be changed without losing focus)for the five-cylindrical electrostatic lens system, by the aid of the simulation program LENSYS, using the finite difference method .Results are obtained as a function of the ratio of the controlling voltages. It was found that the five-cylindrical lens can be operated with the whole focus properties in a useful mode for controlling and focusing the charged particles in experimental studies. | ||
| Keywords | ||
| electrostatic lenses; zoom; lens properties; LENSYS | ||
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