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Extreme ultraviolet quantum detection efficiency of rubidium bromide opaque photocathodesMeasurements are presented of the quantum detection efficiency (QDE) of three samples of RbBr photocathode layers over the 44-150-A wavelength range. The QDE of RbBr-coated microchannel plate (MCP) was measured using a back-to-back Z-stack MCP configuration in a detector with a wedge and strip position-sensitive anode, of the type described by Siegmund et al. (1984). To assess the stability of RbBr layer, the RbBr photocathode was exposed to air at about 30 percent humidity for 20 hr. It was found that the QDE values for the aged cathode were within the QDE measurement errors of the original values. A simple QDE model was developed, and it was found that its predictions are in accord with the QDE measurements.
Document ID
19910031592
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Siegmund, Oswald H. W.
(California Univ. Berkeley, CA, United States)
Gaines, Geoffrey A.
(California, University Berkeley, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Applied Optics
Volume: 29
ISSN: 0003-6935
Subject Category
Electronics And Electrical Engineering
Accession Number
91A16215
Funding Number(s)
CONTRACT_GRANT: NAGW-1290
Distribution Limits
Public
Copyright
Other

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