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|Title:||Diagnostics and propagation of radiation from lightning discharges|
Singh, R D
|Abstract:||The role of stepped leader channel ionization on return current flow has been studied. It is shown that for Te > Ti, the downward traversing electron beam in the stepped leader ionized channel gives rise to plasma oscillations with a finite decay rate. The electron beam propagating downward and ion beam propagating upward give rise to resulting return current. The return current in the lightning channel may become oscillatory as a result of plasma wave interaction. The electromagnetic radiation from an oscillatory return current source becomes variable. Such variations in recorded whistler intensity are often observed in whistler sonograms.|
|ISSN:||0975-105X (Online); 0367-8393 (Print)|
|Appears in Collections:||IJRSP Vol.20(5) [October 1991]|
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