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Proceedings Paper

Photocathodes for ultrasoft x-ray region
Author(s): Victor K. Chevokin; V. N. Schemelev; A. M. Pavlov; A. L. Andruschenko; Vitali A. Podvyaznikov; Alexander M. Prokhorov
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Paper Abstract

The atm of the present work is a search and investigation of efficient photocathodes for detecting ultrasoft X-ray and UV radiation. This research is urgent first because these photocathodes are widely used in image converter tubes (ICT) which are important tools for laser plasita diagnostics. These photocathodes are peculiar for their being able to be for some time in the air without changing the emission characteristics, though on a long-term keeping under atmospheric conditions their parameters are deteriorated for different reasons (oxidation, moisture absorption). Therefore, when preserved for a long time they should be kept in vacuum. Besides laser plasma diagnostics, an interest to ultrasoft X-ray and UV region of spectrum is also encouraged by research on excimer lasers, plasma in systems with magnetic retaining, VHF discharges, and many other physical processes associated with generation of X-ray and UV emission. An increase of photodetector quantum yield in this research is an extremely important task, since it is the photocathode that determines to a great extent the effectiveness of radiation recording. Our major purpose was a search and study of more efficient photocathodes for ultrasoft X-ray and UV regions.

Paper Details

Date Published: 1 January 1992
PDF: 11 pages
Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); doi: 10.1117/12.50562
Show Author Affiliations
Victor K. Chevokin, General Physics Institute (Russia)
V. N. Schemelev, General Physics Institute (Russia)
A. M. Pavlov, General Physics Institute (Russia)
A. L. Andruschenko, General Physics Institute (Russia)
Vitali A. Podvyaznikov, General Physics Institute (Russia)
Alexander M. Prokhorov, General Physics Institute (Russia)


Published in SPIE Proceedings Vol. 1539:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '91
Paul A. Jaanimagi, Editor(s)

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