Deposition of tungsten nanoparticles for potential use in dispenser cathodes

Huanhuan Bai; Matthew J. Beck; Thomas John Balk

doi:10.1109/IVEC45766.2020.9520567

Deposition of tungsten nanoparticles for potential use in dispenser cathodes

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-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 language	English
Title of host publication	2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020
Pages	389-390
Number of pages	2
ISBN (Electronic)	9781538682883
DOIs	https://doi.org/10.1109/IVEC45766.2020.9520567
State	Published - Oct 19 2020
Event	21st IEEE International Conference on Vacuum Electronics, IVEC 2020 - Monterey, United States Duration: Oct 19 2020 → Oct 22 2020

Publication series

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

Conference

Conference	21st IEEE International Conference on Vacuum Electronics, IVEC 2020
Country/Territory	United States
City	Monterey
Period	10/19/20 → 10/22/20

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.

Funders	Funder number
Innovative Vacuum Electronics Science and Technology	N66001-16-1-4041
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

Access to Document

10.1109/IVEC45766.2020.9520567

Cite this

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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.",

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doi = "10.1109/IVEC45766.2020.9520567",

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Bai, H, Beck, MJ & Balk, TJ 2020, Deposition of tungsten nanoparticles for potential use in dispenser cathodes. in 2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020. 2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020, pp. 389-390, 21st IEEE International Conference on Vacuum Electronics, IVEC 2020, Monterey, United States, 10/19/20. https://doi.org/10.1109/IVEC45766.2020.9520567

Deposition of tungsten nanoparticles for potential use in dispenser cathodes. / Bai, Huanhuan; Beck, Matthew J.; Balk, Thomas John.
2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020. 2020. p. 389-390 (2020 IEEE 21st International Conference on Vacuum Electronics, IVEC 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - 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.

AB - 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.

KW - Cathode

KW - Characterization

KW - Nanoparticle

KW - Physical Vapor Deposition

KW - Tungsten

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Deposition of tungsten nanoparticles for potential use in dispenser cathodes

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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