Citation

Z. Kanzari et al., MODELING AND BASIC DATA FOR STREAMER DYNAMICS IN N-2 AND O-2 DISCHARGES, Journal of applied physics, 84(8), 1998, pp. 4161-4169

Citations number

32

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics, Applied

Journal title

ISSN journal

0021-8979

Volume

84

Issue

8

Year of publication

1998

Pages

4161 - 4169

Database

ISI

SICI code

0021-8979(1998)84:8<4161:MABDFS>2.0.ZU;2-X

Abstract

A second order hydrodynamics model of streamer dynamics is developed w
ithout using the classical restrictive approximations concerning the s
ource term of the conservation equation of electron energy. The first
three moments of the Boltzmann equation coupled to the Poisson equatio
n for the space charge electric field are closed using the local energ
y approximation. The basic data needed for the present second order mo
del for electrons and the first order model for ions are obtained from
the solution of the steady state Boltzmann equation and the Monte Car
lo simulation, respectively. The electron data associated with the sou
rce term of the electron energy conservation equation and which corres
pond to the different electron-molecule processes considered in our N-
2 and O-2 discharges (ionization, attachment, excitation, elastic, and
superelastic collisions! are explicitly given. Then, we give the resu
lts obtained with the present second order hydrodynamics model and con
cerning N-2 and O-2 gases at atmospheric pressure between parallel pla
te electrodes under overvoltage conditions. Comparisons are also perfo
rmed with the results obtained from the classical first order model ge
nerally used in the literature. (C) 1998 American Institute of Physics
. [S0021-8979(98)05220-7].