The role of electron scattering with vibrationally excited nitrogen molecules on non-equilibrium plasma kinetics

被引：56

作者：

Capitelli, Mario ^{[1
,2
]}

Colonna, Gianpiero ^{[2
]}

D'Ammando, Giuliano ^{[2
]}

Laporta, Vincenzo ^{[3
]}

Laricchiuta, Annarita ^{[2
]}

机构：

[1] Univ Bari, Dipartimento Chim, I-70125 Bari, Italy

[2] CNR IMIP, I-70126 Bari, Italy

[3] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 10期

关键词：

ENERGY DISTRIBUTION-FUNCTIONS; QUASI-CLASSICAL DYNAMICS; TO-STATE KINETICS; LOW-PRESSURE; DISSOCIATION RATES; ELEMENTARY PROCESSES; BOLTZMANN-EQUATION; RATE COEFFICIENTS; CROSS-SECTIONS; BOUNDARY-LAYER;

D O I：

10.1063/1.4824003

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Electron energy distribution functions have been calculated by a self-consistent model which couples the electron Boltzmann equation with vibrationally and electronically excited state kinetics and plasma chemistry. Moderate pressure nitrogen gas discharges in the E/N range from 30 to 60 Townsend are investigated comparing an electron-impact cross section set considering transitions starting from all the vibrational states, with reduced models, taking into account only collisions involving the ground vibrational level. The results, while confirming the important role of second kind collisions in affecting the eedf, show a large dependence of the eedf on the set of inelastic processes involving vibrationally and electronically excited molecules, pointing out the need of using a cross section database including processes linking excited states in non-equilibrium plasma discharge models. (C) 2013 AIP Publishing LLC.

引用

页数：10