Study of the characteristics of a streamer discharge in air based on a plasma chemical model

Autor:	Jian Shi, Wenxia Sima, Tao Yuan, Qing Yang, Qing-Jun Peng
Rok vydání:	2012
Předmět:	Physics Continuity equation Physics::Instrumentation and Detectors Physics::Plasma Physics Electric field Ionization Electron Plasma Electrical and Electronic Engineering Atomic physics Streamer discharge Neutral particle Charged particle
Zdroj:	IEEE Transactions on Dielectrics and Electrical Insulation. 19:660-670
ISSN:	1558-4135 1070-9878
DOI:	10.1109/tdei.2012.6180261
Popis:	A detailed research on the streamer discharge local mechanism is necessary to enhance and develop the streamer theory. In the present paper, the characteristics of a streamer discharge in air at an atmospheric pressure are investigated using a hydrodynamic model based on plasma chemistry. Aside from continuity equations for electrons and ions, as well as Poisson's equation for the electric field, the model includes the electron mean energy density equation and the neutral particle density continuity equation. The electric field strength and the velocities of streamer propagations obtained from proposed model are in good agreement with experimental and simulation results in literature. The mean electron energy is nearly constant in the streamer channel, except for a peak value at the streamer tip. Although the mole fraction of oxygen is only about 0.2 in air, oxygen ions are the dominant charged particles in the streamer discharge. At the electrode surface, the charged particle densities significantly decrease in the direction of the electrode because of surface reactions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e36bff0704bf057cafb6b7b85fe1aa19 https://doi.org/10.1109/tdei.2012.6180261 Zobrazit plný text záznamu