This article is cited in 10 papers

Cathode assembly of a high-current electron gun with multichannel initiation of emission by breakdown on the surface of a dielectric

P. P. Kiziridi, G. E. Ozur

Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk

Abstract: A new scheme of the cathode assembly of a high-current electron gun is presented. The initiation of explosive emission is carried out using of 69 parallel triggered spark gaps, the electrodes and tubular ceramic insulators of which are built into the disk explosive-emission cathode. The efficiency of the proposed scheme and the high emissivity of the cathode assembly, which is approximately 1.5–1.7 times higher than the emissivity that is characteristic for a traditional gun scheme with a plasma anode and a copper-braided explosive emission cathode, are demonstrated.

Keywords: high-current electron beams, explosive emission, cathode assembly, multi-channel initiation, dielectric surface flashover.

Received: 30.04.2020
Revised: 06.05.2020
Accepted: 06.05.2020

DOI: 10.21883/PJTF.2020.15.49750.18364

 English version: Technical Physics Letters, 2020, 46:8, 775–778

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