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31 Mar 2008

Volume 92, Issue 13, Articles (13xxxx)

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Appl. Phys. Lett. 92, 133501 (2008); http://dx.doi.org/10.1063/1.2901684 (3 pages)

Eric Akmansoy, Emmanuel Centeno, Kevin Vynck, David Cassagne, and Jean-Michel Lourtioz
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Microwave air breakdown enhanced with metallic initiators

G. C. Herring and S. Popović

Appl. Phys. Lett. 92, 131501 (2008); http://dx.doi.org/10.1063/1.2897308 (3 pages) | Cited 3 times

Online Publication Date: 1 April 2008

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We have determined X-band (9.4 GHz) electric field strengths required to obtain air breakdown at atmospheric pressure in the presence of metallic initiators, which are irradiated with repetitive (30 pulses/s) microwave pulses of 3 μs duration and 200 kW peak power. Using a half-wavelength initiator, a factor of 40 reduction (compared to no initiator) was observed in the electric field required to achieve breakdown. The present measurements are compared to a previously published model for air breakdown, which was originally validated with S-band (3 GHz) frequencies and single 40 μs pulses. We find good agreement between this previous model and our present measurements of breakdown with X-band frequencies and repetitive 3 μs pulses.
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52.80.Tn Other gas discharges
52.40.Db Electromagnetic (nonlaser) radiation interactions with plasma
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