NDLI: Microwave Multipactor Breakdown Between Two Cylinders

Content Provider	IEEE Xplore Digital Library
Author	Rasch, J. Anderson, D. Johansson, J.F. Lisak, M. Puech, J. Rakova, E. Semenov, V.E.
Copyright Year	1973
Abstract	An analysis has been made of the microwave breakdown threshold for multipactor in an open structure comprising two parallel cylinders, approximating, e.g., parts of a helix antenna. The electron motion in the corresponding electromagnetic field is analyzed by separating the motion into a slowly varying drift velocity (driven by the ponderomotive force due to the electric field inhomogeneity) and a rapidly oscillating part (driven by the oscillating electric field). Furthermore, the curvature of the cylindrical surfaces of emission is shown to give rise to a new effect that implies a loss of electrons. This leads to a more stringent multipactor breakdown condition for the two-wire structure than for the classical situation corresponding to the case of two plane parallel infinite plates. The importance of this effect is determined by the ratio of the cylinder radii and the distance between the cylinders, and it is shown that when this ratio is small, multipactor can only occur for surfaces having very large secondary emission coefficients. A detailed analysis is also made to determine the lowest voltage between the cylinders at which multipactor becomes possible.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1997
Ending Page	2005
Page Count	9
File Size	287205
File Format	PDF
ISSN	00933813
Volume Number	38
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electric breakdown Motion analysis Microwave antennas Helical antennas Electromagnetic fields Electromagnetic analysis Electron mobility Nonuniform electric fields Electron emission Voltage multipactor Helix antenna microwave breakdown
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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