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MAGNETOACOUSTIC WAVES IN PARTIALLY IONIZED HEAT-RELEASING PLASMA: COMPARISON OF ONE-FLUID AND TWO-FLUID MODELS

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Abstract

Velocities and increments (decrements) of magnetoacoustic waves are calculated using one-fluid and two-fluid models taking into account actual conditions of photodissociative regions of interstellar partially ionized medium. The admissibility of the application of the one-fluid model in the long-wavelength limit (for wave frequencies lower than the neutral—ion collision frequency) is shown. In the short-wavelength range, the two-fluid model predicts the appearance of two magnetoacoustic waves caused by disturbances of only the ion component of medium.

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Funding

This study was supported by the Ministry of Science and Higher Education of the Russian Federation (state contracts on subjects no. 0023-2019-0003 and FSSS-2020-0014).

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Authors and Affiliations

  1. Lebedev Physical Institute, Samara Branch, Russian Academy of Sciencess, 443011, Samara, Russia

    N. E. Molevich, S. Yu. Pichugin & D. S. Ryashchikov

  2. Samara University, 443086, Samara, Russia

    N. E. Molevich & D. S. Ryashchikov

Authors
  1. N. E. Molevich
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  2. S. Yu. Pichugin
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  3. D. S. Ryashchikov
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Corresponding author

Correspondence to N. E. Molevich.

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Translated by A. Kazantsev

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Molevich, N.E., Pichugin, S.Y. & Ryashchikov, D.S. MAGNETOACOUSTIC WAVES IN PARTIALLY IONIZED HEAT-RELEASING PLASMA: COMPARISON OF ONE-FLUID AND TWO-FLUID MODELS. Bull. Lebedev Phys. Inst. 48, 206–210 (2021). https://doi.org/10.3103/S1068335621070046

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  • DOI: https://doi.org/10.3103/S1068335621070046

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