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A paradigm of kinetic simulation including atomic and relaxation processes: a sudden event in a lightning process

Published online by Cambridge University Press:  20 December 2006

Y. KISHIMOTO  and
T. MASAKI
Y. KISHIMOTO
Affiliation:
Graduate School of Energy Science, Kyoto University, Gokasyo, Uji, Kyoto 611-0011, Japan (kishimoto@energy.kyoto-u.ac.jp)
T. MASAKI
Affiliation:
Graduate School of Energy Science, Kyoto University, Gokasyo, Uji, Kyoto 611-0011, Japan (kishimoto@energy.kyoto-u.ac.jp)
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Abstract

A comprehensive particle based integrated code including atomic and relaxation processes has been developed. By using the code, we have investigated the lightning process of compressed neon gas that in a uniformly applied electric field. After a long time interval, streamers are slowly developed from a tiny ionization spot that is initially set. Then a complicated branching is suddenly and also explosively triggered, leading to fine net-like structures or sprites. Electromagnetic radiations are emitted from the sprite and show a low-power wave number spectrum, suggesting that the sprite exhibits a fractal nature.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 971 - 974
Copyright
2006 Cambridge University Press

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