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Subcritical microwave streamer discharge at the surface of a polymer foil

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5 Author(s)
Popovic, S. ; Department of Physics, Old Dominion University, Norfolk, Virginia 23529 ; Vuskovic, L. ; Esakov, I.I. ; Gratchev, L.P.
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An innovative type of subcritical streamer discharge, generated by bursts of focused microwave (MW) radiation in transverse electromagnetic mode with wavelength of 10 cm, pulse duration of 40 μs, and intensity of 5.6×104W/cm2, was initiated at the surface of a polymer foil at 420 Torr in air. The MW field of a quasioptical beam was three times lower than the critical breakdown field. Exposure of a polymer foil to the discharge caused a transition from hydrophobicity to hydrophilicity. © 2002 American Institute of Physics.

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Applied Physics Letters  (Volume:81 ,  Issue: 11 )