Origin of surface microwave discharges |
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Authors: | K V Khodataev |
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Institution: | (1) State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, Dalian, 116024, P.R. China; |
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Abstract: | The high-pressure gas discharge initiated at the focus of pulsed powerful microwave radiation is a branched network of thin
plasma channels completely filling the volume of the focal zone. A detailed experimental investigation of such discharges
is carried out with a setup operating at a wavelength of 8.9 cm and at pressures ranging from 0.05 to 1.00 atm. When the initiator
is placed on a dielectric plate, the discharge channels are found to propagate solely over the surface of the dielectric.
It is shown that electrodynamic interaction between the gas discharge and dielectric is the main reason for the surface propagation
of the discharge. |
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Keywords: | |
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