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Increasing the Electrical Strength of the Accelerating Gap in an Electron Source with a Plasma Cathode

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Abstract

The stability of operation of an electron source with a plasma cathode with grid (layer) stabilization of the emission-plasma boundary and a plasma anode, whose boundary is open, is investigated. An increase in the stability of the source operation is achieved by reducing the reverse gas and ion flows, when the electron-beam trajectory changes due to the placement of the emission electrode of the electron source and a target in different planes. Calorimetric measurements of the radial distribution of the energy density of the generated electron beam were carried out under the conditions of its deflection and in the “straight” transport mode, when the collector target is on the line of sight relative to the emission electrode. It has been experimentally shown that the stability of the electron-source operation increases by several times when the beam is deflected, thus making it possible to expand the range of the beam parameters and opening up new possibilities for using such an electron source for scientific and technological purposes.

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Funding

This study was supported by the Russian Science Foundation, project no. 20-79-10015.

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Authors and Affiliations

  1. Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, 634055, Tomsk, Russia

    V. I. Shin, P. V. Moskvin, M. S. Vorobyev, V. N. Devyatkov, S. Yu. Doroshkevich & N. N. Koval’

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  1. V. I. Shin
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  2. P. V. Moskvin
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  3. M. S. Vorobyev
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  4. V. N. Devyatkov
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  5. S. Yu. Doroshkevich
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  6. N. N. Koval’
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Correspondence to V. I. Shin.

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Translated by A. Seferov

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Shin, V.I., Moskvin, P.V., Vorobyev, M.S. et al. Increasing the Electrical Strength of the Accelerating Gap in an Electron Source with a Plasma Cathode. Instrum Exp Tech 64, 234–240 (2021). https://doi.org/10.1134/S0020441221020159

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  • DOI: https://doi.org/10.1134/S0020441221020159

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