TITLE

Measurements of electron avalanche formation time in W-band microwave air breakdown

AUTHOR(S)
Cook, Alan M.; Hummelt, Jason S.; Shapiro, Michael A.; Temkin, Richard J.
PUB. DATE
August 2011
SOURCE
Physics of Plasmas;Aug2011, Vol. 18 Issue 8, p080707
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present measurements of formation times of electron avalanche ionization discharges induced by a focused 110 GHz millimeter-wave beam in atmospheric air. Discharges take place in a free volume of gas, with no nearby surfaces or objects. When the incident field amplitude is near the breakdown threshold for pulsed conditions, measured formation times are ∼0.1-2 μs over the pressure range 5-700 Torr. Combined with electric field breakdown threshold measurements, the formation time data shows the agreement of 110 GHz air breakdown with the similarity laws of gas discharges.
ACCESSION #
65108134

 

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