Electrostatic Analyzer with Variable Focal Length
- 1 July 1961
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 32 (7) , 850-852
- https://doi.org/10.1063/1.1717529
Abstract
A method for the electrical control of the focal length of an electrostatic analyzer is proposed. The focal length of the apparatus depends on the shape of the electric field, and the electric field in the cylindrical condenser of finite length may be modified by changing the potential near the edges of the condenser. A 90° electrostatic analyzer for such a purpose has been constructed and the focusing character of this apparatus was investigated. The electrode assembly of the analyzer consists of two cylindrical condenser electrodes of finite length and two auxiliary plates near both edges. It was possible to focus a sharp radial image and a sharp axial image on a fluorescent screen at any location by applying a suitable potential to the auxiliary plates.Keywords
This publication has 1 reference indexed in Scilit:
- Ionen- und elektronenoptische Zylinderlinsen und Prismen. IThe European Physical Journal A, 1934