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

被引：0
|
作者：
M. A. Lobaev
O. A. Ivanov
V. A. Isaev
A. L. Vikharev
机构：
[1] Russian Academy of Sciences,Institute of Applied Physics
来源：
Technical Physics Letters | 2009年 / 35卷
关键词：
Technical Physic Letter; Microwave Field; Finite Difference Time Domain; Microwave Pulse; Dielectric Surface;
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学科分类号：
摘要：
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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页码：1074 / 1077
页数：3
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