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Extension of the gas-pressure operating range and increase in the lifetime of the plasma cathode grid of an ion source

  • Gas Discharges, Plasma
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Abstract

A new scheme of a gas-discharge system is proposed for a basket-type ion source with a plasma cathode in which the electrons are emitted from the expanded anode part of a constricted hollow-cathode glow discharge bounded by a grid electrode. The modified electrode system of the ion source made it possible to enlarge the surface area of the plasma cathode grid and the aperture of its cells, thereby providing stable ion emission from the discharge plasma within a wide gas-pressure range and substantially (by one order of magnitude) increasing the grid lifetime. The operation of the plasma cathode in the free and forced emission modes is examined, and the energy efficiency of ion generation in the gas-discharge system under study is evaluated.

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Authors and Affiliations

  1. Institute of Electrophysics, Ural Division, Russian Academy of Sciences, ul. Amundsena 106, Yekaterinburg, 620016, Russia

    N. V. Gavrilov & A. S. Kamenetskikh

Authors
  1. N. V. Gavrilov
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  2. A. S. Kamenetskikh
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Additional information

Original Russian Text © N.V. Gavrilov, A.S. Kamenetskikh, 2007, published in Zhurnal Tekhnicheskoĭ Fiziki, 2007, Vol. 77, No. 3, pp. 12–16.

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Gavrilov, N.V., Kamenetskikh, A.S. Extension of the gas-pressure operating range and increase in the lifetime of the plasma cathode grid of an ion source. Tech. Phys. 52, 301–305 (2007). https://doi.org/10.1134/S1063784207030036

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  • DOI: https://doi.org/10.1134/S1063784207030036

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