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TWT efficiency improvement by a low-cost technique for deposition of carbon on MDC electrodesA simple method of improving the TWT and multistage depressed collector (MDC) efficiency has been demonstrated. The efficiency improvement was produced by the application of a thin layer of carbon to the copper electrodes of the MDC by means of a rapid low-cost technique involving the pyrolysis of hydrocarbon oil in electric arc discharges. Experimental results with a representative TWT and MDC showed an 11 percent improvement in both the TWT and MDC efficiencies as compared to those of the same TWT and MDC with machined copper electrode surfaces. An extended test with a 550-W CW TWT indicated good durability of the carbon-coated electrode surfaces.
Document ID
19870042925
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ebihara, Ben T.
(NASA Lewis Research Center Cleveland, OH, United States)
Ramins, Peter
(NASA Lewis Research Center Cleveland, OH, United States)
Peet, Shelly
(Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1987
Publication Information
Publication: IEEE Transactions on Electron Devices
Volume: ED-34
ISSN: 0018-9383
Subject Category
Electronics And Electrical Engineering
Accession Number
87A30199
Distribution Limits
Public
Copyright
Other

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