Title :
Leader derived initial conditions for a lightning return stroke
Author_Institution :
Consultant, 6152 Manchester Park Circle, Alexandria, VA 22310-4957, USA
Abstract :
Understanding the early growth of the lightning discharge is important because that part of the discharge evolution establishes the high-frequency transmissions from lightning. In this paper, we calculate the distribution of fields and charges as they spread radially from the center of the channel after the charges are deposited by the stepped or dart leader. This information will be used for initial conditions for a detailed tip growth calculation. It is found that the charges, that are 0.3-3 mC/m on average, spread over a substantial area due to the self fields.
Keywords :
atmospheric chemistry; clouds; lightning; air chemistry parameter; cloud-to-ground return stroke; dart leader; high-frequency transmission; leader derived initial conditions; lightning discharge; lightning return stroke; stepped leader; Charge carriers; Chemistry; Electric breakdown; Electron mobility; Equations; Lightning; Plasma sources; Spontaneous emission;
Conference_Titel :
Electromagnetics in Advanced Applications, 2009. ICEAA '09. International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4244-3385-8
Electronic_ISBN :
978-1-4244-3386-5
DOI :
10.1109/ICEAA.2009.5297578
