Transport Coefficients in Water Plasma: Part I: Equilibrium Plasma

Aubreton, J.; Elchinger, Marie-Françoise; Vinson, J. M.

doi:10.1007/s11090-008-9165-8

Cited by 35 publications

(13 citation statements)

References 68 publications

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“…This contribution is analoguous to that from hydrogen-bond dissociation in the liquid, but much larger in number because the intramolecular bonds have greater dissociation energies. Therefore, this effect is more commonly included in chemical models of dilute dissociating gases as an excess term [49,50]. At T16000 K, water is fully dissociated and λ nuc is dominated by the kinetic part t J q,kin ¢ ( ), so that it approaches λ kin again at low densities.…”

Section: Resultsmentioning

confidence: 99%

Thermal conductivity of dissociating water—anab initiostudy

French

2019

New J. Phys.

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The thermal conductivity of partially dissociated and ionised water is calculated in a large-scale study using density functional theory (DFT)-based molecular dynamics (MD) simulations. In doing so, the required heat current of the nuclei is calculated by mapping the effective particle interactions from the DFT-MD simulations onto classical pair potentials. It is demonstrated that experimental and theoretical thermal conductivity data for liquid heavy water and for ice VII are well reproduced with this efficient procedure. Moreover, the approach also allows for an illustrative interpretation of the characteristics of the thermal conductivity in the dense chemically reacting fluid. The thermodynamic conditions investigated here range from densities between 0.2 and 6 g cm −3 and temperatures between 600 and 50000 K, which includes states highly relevant for understanding the interiors of water-rich planets like Uranus and Neptune and exoplanets of similar composition. During the last two decades, ab initio calculations based on finite-temperature density functional theory (FT-DFT) in combination with molecular dynamics (MD) simulations have become a reliable tool for accurate predictions of thermodynamic properties of matter under extreme conditions [12,13]. The prefix FT emphasises that the electron system is consistently treated at a nonzero (finite) temperature [14], which is typically equal to the temperature of the nuclei.The calculation of the thermal conductivity with FT-DFT-MD techniques requires a distincted treatment of the contributions from electronic heat conduction and from heat transport via the nuclei. The former is gained by evaluating the electronic Onsager coefficients using the Kohn-Sham eigenvalues and orbitals from the FT-DFT [15], which was recently accomplished also for partially ionised water [16].

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Section: Resultsmentioning

confidence: 99%

Thermal conductivity of dissociating water—anab initiostudy

French

2019

New J. Phys.

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“…2 and 3, the results of calculations obtained, on the one hand, with the use of the Grad method -both not taking non-ideality effects into account (the zero density model (ZM) model) and making allowance for plasma non-ideality (the dense model (DM)) [26],and, on the other hand, on the basis of Lorentz models (LM) [13,14] and following the Chapman-Enskog method [22,23] are compared. The results of calculations agree well with the data reported in works [14,[22][23][24]. The attention should be paid to the fact that the temperature dependences of the thermal conductivity have characteristic maxima, which are associated with the dissociation and ionization processes (in the case of atomic gas, the first "dissociative" maximum is absent).…”

Section: Calculation Results and Their Discussionmentioning

confidence: 99%

Application of Microwave Beam Refraction in Inhomogeneous Plasma Interferometry

Skibenko¹,

Kovtun²,

Skibenko³

et al. 2016

Ukr. J. Phys.

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The influence of metal impurities on the transport properties of multicomponent thermal plasma at the ambient atmosphere of water vapor has been considered. The calculations are carried out on the basis of the Grad method. It is shown that a small amount of metal impurities can substantially change the magnitude of transport coefficients in comparison with the case of pure water vapor. The influence of the model for the cross-section of electron collisions with a metal atom on the transport properties of thermal plasma is analyzed. K e y w o r d s: multicomponent plasma, underwater discharge, arc discharge, pulsed discharge, thermal conductivity of plasma, plasma conductivity.

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“…The identification of the atomic and molecular plasma species was carried out on the basis of data base 22. and the articles23–30…”

Section: Methodsmentioning

confidence: 99%

Pretreatment of polypropylene films for following technological processes, part 2: The use of low temperature plasma method

Urbaniak–Domagała

2011

J of Applied Polymer Sci

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The surface of polypropylene (PP) films was activated by RF plasma method with the use different gases: argon, air, water vapor, and acetic acid vapor. Plasma was diagnosed based on spectra emitted by gas plasma using the method of optical emission spectroscopy. The effectiveness of these processing gases during plasma treatment was analyzed. The effects of PP activation were assessed with the use of IR-ATR absorption spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy, and the analy-sis of the surface free energy components based on liquid contact angle. The activation of PP surface by plasma treatment resulted in the increased energy of PP surface layer to the extent being dependent on the type of processing gases and in the formation of new chemical groups on it.

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Transport Coefficients in Water Plasma: Part I: Equilibrium Plasma

Cited by 35 publications

References 68 publications

Thermal conductivity of dissociating water—anab initiostudy

Thermal conductivity of dissociating water—anab initiostudy

Application of Microwave Beam Refraction in Inhomogeneous Plasma Interferometry

Pretreatment of polypropylene films for following technological processes, part 2: The use of low temperature plasma method

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