Deposition of tungsten nanoparticles for potential use in dispenser cathodes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Dispenser cathodes have attracted attention in both industrial and academic research for a long time, due to their application as high-brightness electron sources. Since most modern cathodes utilize tungsten as the base material, it is useful to investigate how novel forms of tungsten can influence a cathode. In the present study, nanoscale tungsten particles were generated by physical vapor deposition and deposited onto substrates, to gauge the effectiveness of generating a tungsten coating that can enhance electron emission. These nanoparticles were characterized by scanning and transmission electron microscopy. The tungsten particles formed a continuous nanoporous structure, along with discrete larger particles on the substrate.

Original languageEnglish
Title of host publication2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020
Pages389-390
Number of pages2
ISBN (Electronic)9781538682883
DOIs
StatePublished - Oct 19 2020
Event21st IEEE International Conference on Vacuum Electronics, IVEC 2020 - Monterey, United States
Duration: Oct 19 2020Oct 22 2020

Publication series

Name2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020

Conference

Conference21st IEEE International Conference on Vacuum Electronics, IVEC 2020
Country/TerritoryUnited States
CityMonterey
Period10/19/2010/22/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Funding

This work was financially supported by the Defense Advanced Research Projects Agency (DARPA) Innovative Vacuum Electronics Science and Technology (INVEST) program, under grant number N66001-16-1-4041. The views, opinions, and/or findings expressed are those of the author(s) and should not be interpreted as representing the official views or policies of the Department of Defense or the U.S. Government.

FundersFunder number
Innovative Vacuum Electronics Science and TechnologyN66001-16-1-4041
Defense Advanced Research Projects Agency

    Keywords

    • Cathode
    • Characterization
    • Nanoparticle
    • Physical Vapor Deposition
    • Tungsten

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Instrumentation

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