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Effect of inhomogeneous microwave field on the threshold of multipactor discharge on a dielectric

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Abstract

Multipactor discharge on a dielectric (quartz) surface has been studied in a high-Q microwave resonator excited by TE01n mode in the 3-cm wavelength band. It is established that the discharge threshold significantly depends on the magnitude and direction of a ponderomotive force, which appears at the dielectric surface due to a gradient of the high-frequency potential. The force that repulses electrons from the surface leads to a significant increase in the threshold, whereas the attractive force decreases the threshold. Experiments confirm that a multipactor can arise in inhomogeneous electromagnetic fields in the absence of an external static field that returns emitted electrons to the dielectric surface.

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Authors and Affiliations

  1. Institute of Applied Physics, Russian Academy of Sciences, Nizhni Novgorod, 603600, Russia

    M. A. Lobaev, O. A. Ivanov, V. A. Isaev & A. L. Vikharev

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  1. M. A. Lobaev
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  2. O. A. Ivanov
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  3. V. A. Isaev
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  4. A. L. Vikharev
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Corresponding author

Correspondence to O. A. Ivanov.

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Original Russian Text © M.A. Lobaev, O.A. Ivanov, V.A. Isaev, A.L. Vikharev, 2009, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2009, Vol. 35, No. 23, pp. 9–16.

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Lobaev, M.A., Ivanov, O.A., Isaev, V.A. et al. Effect of inhomogeneous microwave field on the threshold of multipactor discharge on a dielectric. Tech. Phys. Lett. 35, 1074–1077 (2009). https://doi.org/10.1134/S1063785009120025

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  • DOI: https://doi.org/10.1134/S1063785009120025

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