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

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-wav...

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Bibliographic Details
Published inBulletin of the Lebedev Physics Institute Vol. 48; no. 7; pp. 206 - 210
Main Authors Molevich, N. E., Pichugin, S. Yu, Ryashchikov, D. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2021
Springer Nature B.V
Subjects
Atomic collisions
Interstellar matter
Magnetoacoustic waves
Physics
Physics and Astronomy
Two fluid models
heat release
magnetoacoustic waves
partially ionized plasma
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Summary: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.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335621070046