Suppressing and initiation of multipactor discharge on a dielectric by an external dc bias

The results of studying experimentally the influence of an external dc electric field on the multipactor threshold on the surface of a dielectric (quartz) are presented. In the experiments, a high-Q -factor microwave resonator was excited at the TE012 mode in the 3-cm wavelength band. The dependence...

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Bibliographic Details
Published in:Physical review special topics. PRST-AB. Accelerators and beams 2010-02, Vol.13 (2), p.022004, Article 022004
Main Authors: Ivanov, O. A., Lobaev, M. A., Isaev, V. A., Vikharev, A. L.
Format: Article
Language:English
Subjects:
Dielectrics
Electric fields
Electrons
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Summary:The results of studying experimentally the influence of an external dc electric field on the multipactor threshold on the surface of a dielectric (quartz) are presented. In the experiments, a high-Q -factor microwave resonator was excited at the TE012 mode in the 3-cm wavelength band. The dependence of the breakdown threshold on the value and direction of the electrostatic field is determined. It is found that the external dc field repulsing the electrons from the dielectric surface increases the threshold significantly, whereas the field attracting the electrons decreases it. It is shown that one can manage the multipactor efficiently, namely suppress or initiate it, by changing the direction and intensity of the dc field.
ISSN:1098-4402
1098-4402
2469-9888
DOI:10.1103/PhysRevSTAB.13.022004