Transport coefficients of plasmas consisting of insulator vapours

André, Pascal; Brunet, Luc; Bussière, William; Caillard, J. F.; Lombard, Jean Mary; Picard, Jean

doi:10.1051/epjap:2004007

Cited by 37 publications

(28 citation statements)

References 43 publications

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“…If the parameters (r ii , e ii ) are not known, SiO case for example, we estimate them by the following relations [35,36]: 1000 3000 5000 7000 9000 11000 13000 15000…”

Section: Neutral-neutral Interactionsmentioning

confidence: 99%

Transport Coefficients of Ag–SiO2 Plasmas

André

Bussière

Rochette

2007

Plasma Chem Plasma Process

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International audienceCalculated values of viscosity, thermal and electrical conductivities of plasma formed in mixtures of silver (Ag) and silica (SiO2) are presented. The calculations, which assume local thermodynamic equilibrium, are performed for three pressures (1, 10 and 30 atm) in the temperature range from 4,000 to 30,000 K. All the data for the potential interactions and the necessary formulations to obtain values of transport coefficients are given in details. For atmospheric pressure, five mixtures (100% Ag, 75% Ag and 25% SiO2, 50% Ag and 50% SiO2, 25% Ag and 75% SiO2, 100% SiO2) in weight percentage are studied. In order to analyse the pressure influence on the transport coefficients, three samples of Ag–SiO2 mixtures (100% Ag, 50% Ag and 50% SiO2, 100% SiO2) in weight percentage are discussed for pressures of 1, 10 and 30 atm. In addition for the test case of oxygen plasma, we compare the computation code results with values obtained by other authors: discrepancies are found and explained

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“…If the parameters (r ii , e ii ) are not known, SiO case for example, we estimate them by the following relations [35,36]: 1000 3000 5000 7000 9000 11000 13000 15000…”

Section: Neutral-neutral Interactionsmentioning

confidence: 99%

Transport Coefficients of Ag–SiO2 Plasmas

André

Bussière

Rochette

2007

Plasma Chem Plasma Process

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“…From the works of Marr [32] and Bates [33] , with the assumption of a Maxwell-Boltzmann velocity distribution function for electrons and heavy particles, the ra-diative recombination rate coefficient β(m 3 • s −1 ) is obtained as a function of temperature θ from the total photo-ionisation cross section σ T2 T1 (ε, θ) (where T 1 is the electronic state of the neutral molecule CO and T 2 the electronic level of the molecular ion CO + ):…”

Section: Theory and Methodsmentioning

confidence: 99%

Calculation of Photo-Ionisation Cross Sections and Radiative Recombination Rate Coefficients for CO and CO⁺Molecules

Dhouioui¹,

Teulet²,

Cressault³

et al. 2014

Plasma Sci. Technol.

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A method based upon the weighted total cross section (WTCS) theory is proposed to calculate the photo-ionisation cross sections and the radiative recombination rate coefficients between the fundamental level of CO and the main electronic states of its corresponding ion. Total photo-ionisation cross sections and radiative recombination rate coefficients are determined from the calculation of elementary vibrational photo-ionisation cross sections. Transitions between CO + (X, A and B) and CO(X) are considered. Total photo-ionisation cross sections and recombination coefficients are computed in the temperature interval 500-15000 K.

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“…For a gas mixture, the terms B ij (T) and C ijk (T), in Equations (25) and (26), respectively, can be obtained using the LJ potential. Their respective expressions are given in Equations (32) and (33):…”

Section: Expression Of the Potentialmentioning

confidence: 99%

“…These two parameters play a very important role in the determination of the virial coefficients. Currently, much data concerning these parameters can be found in the literature for several species [18,32,41,43,45,46]. The determination of these parameters was obtained for almost all cases from experimental measurements, based on the transport coefficients (viscosity and diffusion), or the second virial coefficient [18,43,45,46].…”

Section: Potential Parameters σ and εmentioning

confidence: 99%

“…In the case of HVCB, some compositions and thermal properties are available in the literature; nevertheless, a complete databank for describing the current cutoff from the initial pressure to the one obtained during the high-current phase is not given, and authors seem to use the same parameters to calculate the Lennard-Jones potential for the entire pressure range [14,32,33]. This problem is the same for the case of hydro-electro formation and hydraulic fracturing: little data is available for H 2 O, and only few details on the parameters that are used to calculate the Lennard-Jones potential are given.…”

Section: Introductionmentioning

confidence: 99%

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The Virial Effect—Applications for SF6 and CH4 Thermal Plasmas

2019

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A tool based on the mass action law was developed to calculate plasma compositions and thermodynamic properties for pure gases and mixtures, assuming a local thermodynamic equilibrium for pressures of up to 300 bar. The collection of the data that was necessary for tool calculation was automated by another tool that was written using Python, and the formats for the model were adapted directly from the NIST and JANAF websites. In order to calculate the plasma compositions for high pressures, virial correction was introduced. The influences of the parameters that were chosen to calculate the Lennard–Jones (12-6) potential were studied. The results at high pressure show the importance of virial correction for low temperatures and the dependence of the dataset used. Experimental data are necessary to determine a good dataset, and to obtain interaction potential. However, the data available in the literature were not always provided, so they are not well-adapted to a large pressure range. Due to this lack, the formulation provided by L. I. Stiel and G. Thodos (Journal of Chemical and Engineering Data, vol. 7, 1962, p. 234–236) is a good alternative when the considered pressure is not close to the critical point. The results may depend strongly on the system studied: examples using SF6 and CH4 plasma compositions are given at high pressure.

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Transport coefficients of plasmas consisting of insulator vapours

Cited by 37 publications

References 43 publications

Transport Coefficients of Ag–SiO2 Plasmas

Transport Coefficients of Ag–SiO2 Plasmas

Calculation of Photo-Ionisation Cross Sections and Radiative Recombination Rate Coefficients for CO and CO⁺Molecules

The Virial Effect—Applications for SF6 and CH4 Thermal Plasmas

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Transport coefficients of plasmas consisting of insulator vapours

Cited by 37 publications

References 43 publications

Transport Coefficients of Ag–SiO2 Plasmas

Transport Coefficients of Ag–SiO2 Plasmas

Calculation of Photo-Ionisation Cross Sections and Radiative Recombination Rate Coefficients for CO and CO+Molecules

The Virial Effect—Applications for SF6 and CH4 Thermal Plasmas

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Product

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Calculation of Photo-Ionisation Cross Sections and Radiative Recombination Rate Coefficients for CO and CO⁺Molecules