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Quantum Yield of Gold-Cathode PhotomultipliersTwo gold-cathode EMI 6255G tubes have been investigated for their quantum yield between 3100 and 1900 A. The tubes had cathodes of different appearances. One of these, numbered 3012, had a slight bluish tinge and was very transparent to visible light; the other, numbered 3021, had a definite gold coloration. The relative quantum yield of each tube was determined with the aid of a Cary model 14 recording spectrophotometer used as a monochromator. The monochromator relative-energy output was determined from the current output of a sodium-salicylate-coated RCA 1P21 photomultiplier. Each gold-cathode tube was then operated at 3000 v, and the central 1.8 cm cube of the cathode was exposed to the monochromator output.
Document ID
20160000490
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Childs, Charles B. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
January 11, 2016
Publication Date
May 1, 1961
Publication Information
Publication: The Optical Society of America
Volume: 51
Issue: 5
Subject Category
Instrumentation And Photography
Optics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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