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Extreme ultraviolet quantum efficiency of opaque alkali halide photocathodes on microchannel platesComprehensive measurements are presented for the quantum detection efficiency (QDE) of the microchannel plate materials CsI, KBr, KCl, and MgF2, over the 44-1800 A wavelength range. QDEs in excess of 40 percent are achieved by several materials in specific wavelength regions of the EUV. Structure is noted in the wavelength dependence of the QDE that is directly related to the valence-band/conduction-band gap energy and the onset of atomic-like resonant transitions. A simple photocathode model allows interpretation of these features, together with the QDE efficiency variation, as a function of illumination angle.
Document ID
19880055303
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Siegmund, O. H. W.
(California Univ. Berkeley, CA, United States)
Everman, E.
(California Univ. Berkeley, CA, United States)
Vallerga, J. V.
(California Univ. Berkeley, CA, United States)
Lampton, M.
(California, University Berkeley, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Optics
Accession Number
88A42530
Funding Number(s)
CONTRACT_GRANT: NASW-4099
CONTRACT_GRANT: NAS5-29298
Distribution Limits
Public
Copyright
Other

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