| 1. |
- Kossyi, I.A., et al.
(författare)
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Electrical breakdown in space-borne microwave equipment
- 2010
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Ingår i: Europhysics News. - 0531-7479. ; 41:6
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Tidskriftsartikel (refereegranskat)abstract
- An experimental and numerical investigation is made of multipactor discharges in a coaxial waveguide. Particular attention is given to the determination of the multipactor threshold and the distribution of the impact energy of the electrons. Simulations are carried out for different parameters of the secondary emission coefficient of the electrode surfaces. This makes it possible to determine these parameters through a comparison between the numerical and experimental results. The comparison also shows that the observed multipactor is mainly of polyphase (non-resonant) nature and represents a mixture of single- and double-surface multipactor discharges.
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| 2. |
- Kossyi, I. A., et al.
(författare)
-
Experimental and numerical investigation of multipactor discharges in a coaxial waveguide
- 2010
-
Ingår i: Journal of Physics D-Applied Physics. - 0022-3727. ; 43:34
-
Tidskriftsartikel (refereegranskat)abstract
- An experimental and numerical investigation is made of multipactor discharges in a coaxial waveguide. Particular attention is given to the determination of the multipactor threshold and the distribution of the impact energy of the electrons. Simulations are carried out for different parameters of the secondary emission coefficient of the electrode surfaces. This makes it possible to determine these parameters through a comparison between the numerical and experimental results. The comparison also shows that the observed multipactor is mainly of polyphase (non-resonant) nature and represents a mixture of single- and double-surface multipactor discharges.
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| 3. |
- Semenov, V. E., et al.
(författare)
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Reduction of the Multipactor Threshold Due to Electron Cyclotron Resonance
- 2012
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Ingår i: Ieee Transactions on Plasma Science. - 0093-3813. ; 40:11, s. 3062-3069
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Tidskriftsartikel (övrigt vetenskapligt)abstract
- Single-surface multipactor on metal surfaces is studied in the case when the microwave electric field is superimposed on a dc electric and a permanent magnetic field. Based on a simple analysis of the electron motion, it is predicted that considerable reduction in the multipactor threshold is possible when the electron cyclotron frequency is equal to the microwave field frequency and the permanent magnetic field has the proper orientation with respect to the metal surface. The prediction is confirmed by numerical simulations, and some experimental indications of the reduced multipactor threshold are also presented.
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| 4. |
- Semenov, V. E., et al.
(författare)
-
Simulations of multipactor in circular waveguides
- 2010
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Ingår i: Physics of Plasmas. - 1070-664X. ; 17:12
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Tidskriftsartikel (refereegranskat)abstract
- Detailed numerical simulations have been done to investigate the properties of multipactor breakdown in circular waveguides operating in the propagating fundamental TE11 mode. Main attention has been given to a comparison between the two fundamental cases corresponding to linear and circular polarizations, respectively, of the propagating electromagnetic wave. It is found that circular polarization is considerably more susceptible to multipactor than linear polarization. The reason for this difference is clarified by a comprehensive study of the electron motion in the waveguide.
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