NDLI: Carbon and carbon-coated electrodes for multistage depressed collectors for electron-beam devices

Content Provider	IEEE Xplore Digital Library
Author	Curren, A.N.
Copyright Year	1963
Abstract	The efficiency of multistage depressed collectors (MDC's) for electron-beam amplifier tubes is strongly affected by the secondary electron emission characteristics of the collector electrode surfaces. Specifically, to recover the maximum kinetic energy from the tube's spent electron beam and therefore to achieve high collector efficiency, the electrode surfaces must have low secondary electron emission properties. Copper, the most commonly used MDC electrode material, has relatively high emission properties. While several methods for reducing these emission properties have been applied with some success, graphite or carbon electrodes are currently being considered as much more promising electrode materials. Furthermore, experimental studies have demonstrated that the already low emission properties of these carbon forms can be reduced to the lowest levels observed thus far by ion texturing their surfaces under the proper conditions. Recently, a method of applying a highly textured carbon film on a copper substrate was developed that has a particularly significant potential for the MDC electrode application. This paper reviews important aspects of the carbon and carbon-coated MDC electrode technology developed at the NASA Lewis Research Center as well as related technology developed under NASA sponsorship. The following topics are included: electrode material properties, surface treatment procedures, surface physical characteristics, secondary electron emission measurements, and MDC fabrication methods. The performance of MDC's with untreated graphite electrodes, ion-textured graphite electrodes, and textured, carbon-coated copper electrodes is also discussed.
Sponsorship	IEEE Electron Devices Society
Starting Page	1902
Ending Page	1914
Page Count	13
File Size	2174813
File Format	PDF
ISSN	00189383
Volume Number	33
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1986-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

3-D Simulations and Design of Multistage Depressed Collectors for Sheet Beam Millimeter Wave Vacuum Electron Devices

Isotropic graphite multistage depressed collectors-a progress report

Secondary electron emission properties of conducting surfaces for use in multistage depressed collectors

Correction to Secondary electron emission properties of conducting surfaces for use in multistage depressed collectors

Techniques for the Development of Multistage Depressed Collectors

Three-dimensional modeling of multistage depressed collectors

Shape Optimization of Multistage Depressed Collectors by Parallel Evolutionary Algorithm

Optimization of Multistage Depressed Collectors

Air-gap isolated microcircuits—Beam-lead devices

Carbon and carbon-coated electrodes for multistage depressed collectors for electron-beam devices—A technology review

Similar Documents

3-D Simulations and Design of Multistage Depressed Collectors for Sheet Beam Millimeter Wave Vacuum Electron Devices

Isotropic graphite multistage depressed collectors-a progress report

Secondary electron emission properties of conducting surfaces for use in multistage depressed collectors

Correction to Secondary electron emission properties of conducting surfaces for use in multistage depressed collectors

Techniques for the Development of Multistage Depressed Collectors

Three-dimensional modeling of multistage depressed collectors

Shape Optimization of Multistage Depressed Collectors by Parallel Evolutionary Algorithm

Optimization of Multistage Depressed Collectors

Air-gap isolated microcircuits&#8212;Beam-lead devices

Carbon and carbon-coated electrodes for multistage depressed collectors for electron-beam devices&#8212;A technology review

Air-gap isolated microcircuits—Beam-lead devices

Carbon and carbon-coated electrodes for multistage depressed collectors for electron-beam devices—A technology review