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Calculation of Thermal Conductivity Coefficients of Electrons in Magnetized Dense Matter

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Abstract

The solution of Boltzmann equation for plasma in magnetic field with arbitrarily degenerate electrons and nondegenerate nuclei is obtained by Chapman−Enskog method. Functions generalizing Sonine polynomials are used for obtaining an approximate solution. Fully ionized plasma is considered. The tensor of the heat conductivity coefficients in nonquantized magnetic field is calculated. For nondegenerate and strongly degenerate plasma the asymptotic analytic formulas are obtained and compared with results of previous authors. The Lorentz approximation with neglecting of electron−electron encounters is asymptotically exact for strongly degenerate plasma. For the first time, analytical expressions for the heat conductivity tensor for nondegenerate electrons in the presence of a magnetic field are obtained in the three-polynomial approximation with account of electron−electron collisions. Account of the third polynomial improved substantially the precision of results. In the two-polynomial approximation, the obtained solution coincides with the published results. For strongly degenerate electrons, an asymptotically exact analytical solution for the heat conductivity tensor in the presence of a magnetic field is obtained for the first time. This solution has a considerably more complicated dependence on the magnetic field than those in previous publications and gives a several times smaller relative value of the thermal conductivity across the magnetic field at ωτ * 0.8.

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Author information

Authors and Affiliations

  1. Space Research Institute, Russian Academy of Sciences, Moscow, 117997, Russia

    G. S. Bisnovatyi-Kogan & M. V. Glushikhina

  2. National Research Nuclear University “MEPhI,”, Moscow, 115409, Russia

    G. S. Bisnovatyi-Kogan

Authors
  1. G. S. Bisnovatyi-Kogan
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  2. M. V. Glushikhina
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Corresponding author

Correspondence to G. S. Bisnovatyi-Kogan.

Additional information

Published in Russian in Fizika Plazmy, 2018, Vol. 44, No. 4, pp. 355–374.

The article was translated by the authors.

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Bisnovatyi-Kogan, G.S., Glushikhina, M.V. Calculation of Thermal Conductivity Coefficients of Electrons in Magnetized Dense Matter. Plasma Phys. Rep. 44, 405–423 (2018). https://doi.org/10.1134/S1063780X18040013

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  • DOI: https://doi.org/10.1134/S1063780X18040013

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