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In positive lightning return strokes, the net momentum transported by the radiation field has the same direction as the momentum associated with electrons, whereas the momentum associated with electrons is in opposite direction to the momentum of radiation in negative return strokes. It is shown here that this polarity asymmetry could limit the maximum speed of positive return strokes with respect to the negative return strokes.
Farhad Rachidi-Haeri, Antonio Sunjerga, Thomas Chaumont
Stefano Coda, Basil Duval, Umar Sheikh, Claudia Colandrea, Luke Simons, Jean Arthur Cazabonne