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Performance of the secondary townsend emission through the electric discharge characteristics in coaxial vircator
Joint Authors
Ibrahim, F. A.
Shagar, A. M.
Abd al-Latif, S. T.
Source
Arab Journal of Nuclear Sciences and Applications
Issue
Vol. 51, Issue 2 (30 Apr. 2018), pp.82-88, 7 p.
Publisher
The Egyptian Society of Nuclear Science and Applications
Publication Date
2018-04-30
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Topics
Abstract EN
The influence of secondary electron emission on self-sustaining and maintaining discharge current is studied using a new type of DC glow discharge operated on virtual cathode theory through argon gas.
The radial electron beam is generated outside the diode in coaxial Vircator.
The transported electric discharge, from non-self-sustaining to self-sustaining discharge, occurs in the Townsend region and strongly depends on the secondary electron emission.
The first ionization acts as a breakdown starter, then the second emission completes the electric discharge without consumed energy.
The present work aims to study the effect of some physical parameters on the secondary electron emission to reduce the applied breakdown voltage and improve the ionization process, as well as to reduce the consumed electric energy.
During the study, it was found that the self-discharge started due to the second electron emission (γ) from the cathode which increased by increasing the ionization potential and decreasing the electric field.
There was a balance between the first ionization coefficient and the electron attachment which confirms that the ( γ ) is the main element in the glow discharge.
The minimum breakdown voltage for argon gas is 219 volts at Pd= 8 x 10-2 Torr.cm.
American Psychological Association (APA)
Shagar, A. M.& Abd al-Latif, S. T.& Ibrahim, F. A.. 2018. Performance of the secondary townsend emission through the electric discharge characteristics in coaxial vircator. Arab Journal of Nuclear Sciences and Applications،Vol. 51, no. 2, pp.82-88.
https://search.emarefa.net/detail/BIM-899638
Modern Language Association (MLA)
Shagar, A. M.…[et al.]. Performance of the secondary townsend emission through the electric discharge characteristics in coaxial vircator. Arab Journal of Nuclear Sciences and Applications Vol. 51, no. 2 (Apr. 2018), pp.82-88.
https://search.emarefa.net/detail/BIM-899638
American Medical Association (AMA)
Shagar, A. M.& Abd al-Latif, S. T.& Ibrahim, F. A.. Performance of the secondary townsend emission through the electric discharge characteristics in coaxial vircator. Arab Journal of Nuclear Sciences and Applications. 2018. Vol. 51, no. 2, pp.82-88.
https://search.emarefa.net/detail/BIM-899638
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 88
Record ID
BIM-899638