Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100688713> ?p ?o ?g. }
- W3100688713 endingPage "101" @default.
- W3100688713 startingPage "101" @default.
- W3100688713 abstract "Ideal magnetohydrodynamics (MHD) provides an accurate description of low-frequency Alfvén waves in fully ionized plasmas. However, higher-frequency waves in many plasmas of the solar atmosphere cannot be correctly described by ideal MHD and a more accurate model is required. Here, we study the properties of small-amplitude incompressible perturbations in both the low- and the high-frequency ranges in plasmas composed of several ionized species. We use a multi-fluid approach and take into account the effects of collisions between ions and the inclusion of Hall's term in the induction equation. Through the analysis of the corresponding dispersion relations and numerical simulations, we check that at high frequencies ions of different species are not as strongly coupled as in the low-frequency limit. Hence, they cannot be treated as a single fluid. In addition, elastic collisions between the distinct ionized species are not negligible for high-frequency waves, since an appreciable damping is obtained. Furthermore, Coulomb collisions between ions remove the cyclotron resonances and the strict cutoff regions, which are present when collisions are not taken into account. The implications of these results for the modeling of high-frequency waves in solar plasmas are discussed." @default.
- W3100688713 created "2020-11-23" @default.
- W3100688713 creator A5018463156 @default.
- W3100688713 creator A5038205553 @default.
- W3100688713 creator A5051145180 @default.
- W3100688713 date "2016-11-21" @default.
- W3100688713 modified "2023-10-04" @default.
- W3100688713 title "MULTI-FLUID APPROACH TO HIGH-FREQUENCY WAVES IN PLASMAS. I. SMALL-AMPLITUDE REGIME IN FULLY IONIZED MEDIUM" @default.
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