Application of Momentum Transfer Theory for Ion and Electron Transport in Pure Gases and in Gas Mixtures
- Institute of Physics, P.O.Box 68, 11080 Zemun, Belgrade (Serbia and Montenegro)
In this paper we have presented two applications of Momentum Transfer Theory (MTT), which were both aimed at obtaining reliable data for modeling of non-equilibrium plasma. Transport properties of ion swarms in presence of Resonant Charge Transfer (RCT) collisions are studied using Momentum Transfer Theory (MTT). Using the developed MTT we tested a previously available anisotropic set of cross-sections for Ar++Ar collisions bay making the comparisons with the available data for the transverse diffusion coefficient. We also developed an anisotropic set of Ne++Ne integral cross-sections based on the available data for mobility, longitudinal and transverse diffusion. Anisotropic sets of cross-sections are needed for Monte Carlo simulations of ion transport and plasma models. Application of Blanc's Law for drift velocities of electrons and ions in gas mixtures at arbitrary reduced electric field strengths E/n0 was studied theoretically and by numerical examples. Corrections for Blanc's Law that include effects of inelastic collisions were derived. In addition we have derived the common mean energy procedure that was proposed by Chiflikian in a general case both for ions and electrons. Both corrected common E/n0 and common mean energy procedures provide excellent results even for electrons at moderate E/n0 where application of Blanc's Law was regarded as impossible. In mixtures of two gases that have negative differential conductivity (NDC) even when neither of the two pure gases show NDC the Blanc's Law procedure was able to give excellent predictions.
- OSTI ID:
- 20630464
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 740; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measured and calculated SF{sub 6}{sup -} collision and swarm ion transport data in SF{sub 6}-Ar and SF{sub 6}-Xe mixtures
Electron Transport Coefficients and Scattering Cross Sections in CH4, HBr and in Mixtures of He and Xe
Related Subjects
ANISOTROPY
ARGON
ARGON IONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DIFFUSION
ELECTRIC FIELDS
ELECTRONS
INTEGRAL CROSS SECTIONS
ION-MOLECULE COLLISIONS
MIXTURES
MOBILITY
MOMENTUM TRANSFER
MONTE CARLO METHOD
NEON
NON-EQUILIBRIUM PLASMA
PLASMA SIMULATION
RADIATION TRANSPORT
USES