Influence of the microwave magnetic field on high power microwave window breakdown

D. Hemmert, A. Neuber, J. Dickens, H. Krompholz, L. L. Hatfield, M. Kristiansen

Research output: Contribution to journalConference article

Abstract

Effects of the microwave magnetic field on window breakdown were investigated at the upstream and downstream side of a dielectric interface. Simple trajectory calculations of secondary electrons in an rf field show significant forward motion of electrons parallel to the microwave direction of propagation. The Lorentz-force due to the microwave magnetic field on high-energy secondary electrons might substantially influence the standard multipactor mechanism. As a result, the breakdown power level for the downstream side of a window would be higher than for the upstream side. This was tested utilizing an S-band travelling wave resonant ring, powered by a 3 MW magnetron at 2.85 GHz, leading to a total power greater than 60 MW.

Original languageEnglish
Pages (from-to)229
Number of pages1
JournalIEEE International Conference on Plasma Science
StatePublished - 1999
EventThe 26th IEEE International Conference on Plasma Science (ICOPS99) - Monterey, CA, USA
Duration: Jun 20 1999Jun 24 1999

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