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Proceedings Paper

Further Developments Of Electrographic Image Detectors
Author(s): George R. Carruthers
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Paper Abstract

This paper reports the current status of our program to develop far- and middle-ultraviolet-sensitive electrographic detectors. These include large-format, semitransparent-photocathode detectors and opaque-photocathode electrographic Schmidt cameras. Modifications of a previously-demonstrated far-UV large-format detector to make it suitable for possible Shuttle/Spacelab space astronomy investigations have been implemented and tested. Middle-ultraviolet-sensitive large-format and Schmidt electrographic detectors are now in the laboratory development stage. Cesium telluride photocathodes are used to provide sensitivity in the 1700-3100 A spectral range, and techniques for processing these photocathodes are discussed. The preparation and use of polyimide barrier membranes, for protecting the photocathodes from deterioration by film outgassing, are described. A new opaque-photocathode vacuum-ultraviolet-sensitive electrographic detector has been demonstrated, which is based on an oblique-focusing electron optical system similar to that used by Princeton with electron-bombarded CCD arrays. Test results and potential applications of this detector are described.

Paper Details

Date Published: 9 November 1981
PDF: 11 pages
Proc. SPIE 0279, Ultraviolet and Vacuum Ultraviolet Systems, (9 November 1981); doi: 10.1117/12.965713
Show Author Affiliations
George R. Carruthers, Naval Research Laboratory (United States)

Published in SPIE Proceedings Vol. 0279:
Ultraviolet and Vacuum Ultraviolet Systems
William R. Hunter, Editor(s)

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