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Content Provider | IEEE Xplore Digital Library |
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Author | Hidaka, Y. Choi, E.M. Mastovsky, I. Shapiro, M.A. Sirigiri, J.R. Temkin, R.J. |
Copyright Year | 2007 |
Description | Author affiliation: Massachusetts Inst. of Technol., Cambridge (Hidaka, Y.; Choi, E.M.; Mastovsky, I.; Shapiro, M.A.; Sirigiri, J.R.; Temkin, R.J.) |
Abstract | We present the observation, for the first time, of large, regular arrays of plasma filaments during surface and volume breakdown in air at atmospheric pressure using a focused, linearly polarized Gaussian output beam of a pulsed gyrotron. Both volume breakdown in free space and surface breakdown at/near a dielectric window have been studied. A gyrotron with an internal mode converter that emits 110 GHz microwave pulses with up to 1.5 MW peak power and pulse length of 3 microseconds has been used as the source of the microwave beam. Diagnostics include optical emission measurements using photodiodes and a camera, and microwave transmission measurement. The formation of the observed regular filamentary array can be explained by field enhancement approximately a quarter wavelength upstream of each existing filament due to diffraction from the filament. |
Starting Page | 516 |
Ending Page | 517 |
File Size | 4833657 |
Page Count | 2 |
File Format | |
ISBN | 9781424414383 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2007-09-02 |
Publisher Place | UK |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronic Engineers, Inc. |
Subject Keyword | Electric breakdown Gyrotrons Atmospheric-pressure plasmas Optical surface waves Dielectric breakdown Optical pulses Microwave measurements Wavelength measurement Polarization Particle beams |
Content Type | Text |
Resource Type | Article |
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