Emissivity of a multibeam electron gun with a glassy carbon field-emission cathode
- Authors: Bushuev N.A.1, Glukhova O.E.2, Grigor’ev Y.A.3, Ivanov D.V.2, Kolesnikova A.S.2, Nikolaev A.A.1, Shalaev P.D.1, Shesterkin V.I.1
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Affiliations:
- Research and Production Enterprise Almaz
- Chernyshevskii State University
- Kotel’nikov Institute of Radio Engineering and Electronics, Saratov Branch
- Issue: Vol 61, No 2 (2016)
- Pages: 290-295
- Section: Physical Electronics
- URL: https://journals.rcsi.science/1063-7842/article/view/196877
- DOI: https://doi.org/10.1134/S1063784216020080
- ID: 196877
Cite item
Abstract
A multibeam triode electron gun with a glassy carbon field-emission cathode that is intended for an O-type microwave amplifier is studied. The electric field strength and the current density at the microtips versus the distance to the center of a cell of the cathode–grid unit are calculated. Calculation data are compared with experimental results. It is shown that about 70% of the cathode current in each cell is accounted for by microtips arranged in a circumferential ring no wider than 20 μm. The field-emission current density inside the ring exceeds 40 A/cm2, and the current per microtip equals 43.1 μA.
Keywords
About the authors
N. A. Bushuev
Research and Production Enterprise Almaz
Email: shesterkin.v@mail.ru
Russian Federation, ul. Panfilova 1, Saratov, 410033
O. E. Glukhova
Chernyshevskii State University
Email: shesterkin.v@mail.ru
Russian Federation, Astrakhanskaya ul. 83, Saratov, 410012
Yu. A. Grigor’ev
Kotel’nikov Institute of Radio Engineering and Electronics, Saratov Branch
Email: shesterkin.v@mail.ru
Russian Federation, ul. Zelenaya 38, Saratov, 410019
D. V. Ivanov
Chernyshevskii State University
Email: shesterkin.v@mail.ru
Russian Federation, Astrakhanskaya ul. 83, Saratov, 410012
A. S. Kolesnikova
Chernyshevskii State University
Email: shesterkin.v@mail.ru
Russian Federation, Astrakhanskaya ul. 83, Saratov, 410012
A. A. Nikolaev
Research and Production Enterprise Almaz
Email: shesterkin.v@mail.ru
Russian Federation, ul. Panfilova 1, Saratov, 410033
P. D. Shalaev
Research and Production Enterprise Almaz
Email: shesterkin.v@mail.ru
Russian Federation, ul. Panfilova 1, Saratov, 410033
V. I. Shesterkin
Research and Production Enterprise Almaz
Author for correspondence.
Email: shesterkin.v@mail.ru
Russian Federation, ul. Panfilova 1, Saratov, 410033