RESEOS – A model of thermodynamic and optical properties of hot and warm dense matter

Ovechkin, A. A.; Loboda, P. A.; Новиков, В. Г.; Grushin, A. S.; Solomyannaya, Anna Dmitrievna

doi:10.1016/j.hedp.2014.09.001

Cited by 33 publications

(34 citation statements)

References 56 publications

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“…[30][31][32]) including EoS models (e.g. [33]), ion-ion correlations [34,35], continuum lowering [36] and plasma-plasma phase transition [37], for models of laser-matter interactions (see above), models of swift ion tracks (e.g. [38][39][40]) and other high energy density physics applications.…”

Section: Introductionmentioning

confidence: 99%

Pressure in electronically excited warm dense metals

Stegaĭlov

Zhilyaev

2015

Contrib. Plasma Phys.

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Non-equilibrium two-temperature warm dense metals consist of the ion subsystem that is subjected to structural transitions and involved in the mass transfer, and the electron subsystem that in various pulsed experiments absorbs energy and then evolves together with ions to equilibrium. Definition of pressure in such non-equilibrium systems causes certain controversy. In this work we make an attempt to clarify this definition that is vital for proper description of the whole relaxation process. Using the density functional theory we analyze on examples of Al and Au electronic pressure components in warm dense metals. Appealing to the Fermi gas model we elucidate a way to find a number of free delocalized electrons in warm dense metals.

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Section: Introductionmentioning

confidence: 99%

Pressure in electronically excited warm dense metals

Stegaĭlov

Zhilyaev

2015

Contrib. Plasma Phys.

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“…Different methods of simulation are applicable to obtain matter properties in different regions of phase diagram. The average atom model 10,11 may be used to calculate matter properties at high temperatures and compressions. The model may be applied both for one-component 12 and multi-component systems 13 .…”

Section: Introductionmentioning

confidence: 99%

Ab initio calculation of thermodynamic, transport, and optical properties of CH2 plastics

Knyazev

Levashov

2015

Phys. Plasmas

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This work covers an ab initio calculation of thermodynamic, transport, and optical properties of plastics of the effective composition CH 2 at density 0.954 g/cm 3 in the temperature range from 5 kK up to 100 kK. The calculation is based on the quantum molecular dynamics, density functional theory, and the Kubo-Greenwood formula. The temperature dependence of the static electrical conductivity r 1 DC ðTÞ has a step-like shape: r 1 DC ðTÞ grows rapidly for 5 kK T 10 kK and is almost constant for 20 kK T 60 kK. The additional analysis based on the investigation of the electron density of states (DOS) is performed. The rapid growth of r 1 DC ðTÞ at 5 kK T 10 kK is connected with the increase of DOS at the electron energy equal to the chemical potential ¼ l.The frequency dependence of the dynamic electrical conductivity r 1 (x) at 5 kK has the distinct non-Drude shape with the peak at x % 10 eV. This behavior of r 1 (x) was explained by the dip at the electron DOS. V C 2015 AIP Publishing LLC. [http://dx.

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“…Unlike the Liberman model [37] originally implemented in RESEOS [40,42], the NWS model allows for non-uniformity of the electron density at r > r 0 while retaining the pair correlation function in the form of the step function (2.2). However, RESEOS calculations…”

Section: Opacity Calculations Using the Starrett And Saumon Modelmentioning

confidence: 99%

Plasma opacity calculations using the Starrett and Saumon average-atom model with ion correlations

Ovechkin

Loboda

Falkov

2019

High Energy Density Physics

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We present the opacities of iron, aluminum, and bromine plasmas calculated using the Starrett and Saumon average-atom model allowing for ion correlations. We show that the use of earlier average-atom ion-correlation model of Rozsnyai, as has recently been done in the solar opacity calculations, overestimates the effect of ion correlations on plasma opacities.The reason for this overestimation is discussed.

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RESEOS – A model of thermodynamic and optical properties of hot and warm dense matter

Cited by 33 publications

References 56 publications

Pressure in electronically excited warm dense metals

Pressure in electronically excited warm dense metals

Ab initio calculation of thermodynamic, transport, and optical properties of CH2 plastics

Plasma opacity calculations using the Starrett and Saumon average-atom model with ion correlations

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