High-voltage pulsed discharge along the water surface. Electric andspectral characteristics

摘要

Results are presented from experimental studies of electrical and spectral characteristics of a'complete' and 'incomplete' leader discharges propagating along the surface of conducting water. Theelectron density (ne=1.5-3·10 17 cm -3 ) and temperature (Te ≈1-2eV) along the discharge channel havebeen determined from profiles of hydrogen spectral lines H α и H β broadened due to the Stark effect inthe plasma electric fields. The gas temperature in the cannel (Tg ≈5000K) was measured from a thermalradiation in the Wien region of the Planckian radiator spectrum. It is shown that the main parameters ofthe leader channel ne, Te, Tg vary only slightly along the channel length.