Synchronization of positive surface streamers triggered by vacuum ultraviolet in atmosphere

The synchronous generation of the surface streamer discharges from two electrodes in air is investigated in terms of wavelength and intensity of the discharge light as a trigger for the synchronization of the surface streamers. It is found that the light emitted from the first streamer causes the ph...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2006-01, Vol.39 (1), p.113-118
Main Authors: Kashiwagi, Yasuhide, Itoh, Haruo
Format: Article
Language:English
Subjects:
Arcs, sparks, lightning
Electric discharges
Exact sciences and technology
Other gas discharges
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
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Summary:The synchronous generation of the surface streamer discharges from two electrodes in air is investigated in terms of wavelength and intensity of the discharge light as a trigger for the synchronization of the surface streamers. It is found that the light emitted from the first streamer causes the photoelectron emission and the photoionization in the vicinity of the opposing electrode, triggering synchronous discharge of the second streamer. The wavelength of the light contributing to this phenomenon is shorter than 250 nm, with a remarkable rise in synchronization probability from 164 nm to 115 nm. This is considered to be due to the existence of the photoabsorption windows for oxygen in this vacuum ultraviolet region. These results suggest that the photon energy required to supply initial electrons sufficient to trigger the surface streamers on an acrylic resin insulator is at least 5 eV and more enhancement is found at 8 and 10 eV in this study.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/39/1/017