Photocathodes for ultrasoft x-ray region

Victor K. Chevokin; V. N. Schemelev; A. M. Pavlov; A. L. Andruschenko; Vitali A. Podvyaznikov; Alexander M. Prokhorov

doi:10.1117/12.50562

1 January 1992 Photocathodes for ultrasoft x-ray region

Victor K. Chevokin, V. N. Schemelev, A. M. Pavlov, A. L. Andruschenko, Vitali A. Podvyaznikov, Alexander M. Prokhorov

Proceedings Volume 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91; (1992) https://doi.org/10.1117/12.50562
Event: San Diego, '91, 1991, San Diego, CA, United States

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.

Citation Download Citation

Victor K. Chevokin, V. N. Schemelev, A. M. Pavlov, A. L. Andruschenko, Vitali A. Podvyaznikov, and Alexander M. Prokhorov "Photocathodes for ultrasoft x-ray region", Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); https://doi.org/10.1117/12.50562

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KEYWORDS

X-rays

Quantum efficiency

Ultraviolet radiation

Printed circuit board testing

Electrons

Gold

Plasma

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