Increase of the electric field in head-on collisions between negative and positive streamers - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Geophysical Research Letters Année : 2015

Increase of the electric field in head-on collisions between negative and positive streamers

Résumé

Head-on collisions between negative and positive streamer discharges have recently been suggested to be responsible for the production of high electric fields leading to X-rays emissions. Using a plasma fluid approach, we model head-on collisions between negative and positive streamers. We observe the occurrence of a very strong electric field at the location of the streamer collision. However, the enhancement of the field produces a strong increase in the electron density, which leads to a collapse of the field over only a few picoseconds. Using a Monte Carlo model, we have verified that this process is therefore not responsible for the acceleration of a significant number of electrons to energy >1 keV. We conclude that no significant X-ray emission could be produced by the head-on encounter of nonthermal streamer discharges. Moreover, we quantify the optical emissions produced in the streamer collision.
Fichier principal
Vignette du fichier
grl53137.pdf (913.11 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

insu-01181737 , version 1 (30-07-2015)

Identifiants

Citer

Mohand Ameziane Ihaddadene, Sébastien Celestin. Increase of the electric field in head-on collisions between negative and positive streamers. Geophysical Research Letters, 2015, 42, pp.5644-5651. ⟨10.1002/2015GL064623⟩. ⟨insu-01181737⟩
70 Consultations
165 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More