Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma
Nonlinear excitation of slow modes by the planar magnetosonic perturbations in a plasma is discussed. Plasma is an open system due to radiation and external heating. This may stipulate enhancement of wave perturbations and hence the acoustical activity of plasma. Plasma is assumed to be a homogeneou...
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Institute of Fundamental Technological Research Polish Academy of Sciences
2018-01-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2117 |
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| author | Anna PERELOMOVA |
| author_facet | Anna PERELOMOVA |
| author_sort | Anna PERELOMOVA |
| collection | DOAJ |
| description | Nonlinear excitation of slow modes by the planar magnetosonic perturbations in a plasma is discussed. Plasma is an open system due to radiation and external heating. This may stipulate enhancement of wave perturbations and hence the acoustical activity of plasma. Plasma is assumed to be a homogeneous ideal gas with infinite electrical conductivity. The straight magnetic field is orthogonal to the velocity of fluid’s elements. Nonlinear excitation of the non-wave modes (that is, the Alfv´en and the entropy modes) by periodic and aperiodic planar magnetoacoustic perturbations, is discussed. The sawtooth wave and the small-magnitude harmonic wave are considered as examples of periodic in time perturbations. The conclusions concern acoustically active and thermally unstable flows as well. |
| format | Article |
| id | doaj-art-bd70209a81e840da9a7d7d2e39c7722c |
| institution | DOAJ |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-bd70209a81e840da9a7d7d2e39c7722c2025-08-20T02:51:19ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2018-01-0143110.24425/118077Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic PlasmaAnna PERELOMOVA0Technical University of GdanskNonlinear excitation of slow modes by the planar magnetosonic perturbations in a plasma is discussed. Plasma is an open system due to radiation and external heating. This may stipulate enhancement of wave perturbations and hence the acoustical activity of plasma. Plasma is assumed to be a homogeneous ideal gas with infinite electrical conductivity. The straight magnetic field is orthogonal to the velocity of fluid’s elements. Nonlinear excitation of the non-wave modes (that is, the Alfv´en and the entropy modes) by periodic and aperiodic planar magnetoacoustic perturbations, is discussed. The sawtooth wave and the small-magnitude harmonic wave are considered as examples of periodic in time perturbations. The conclusions concern acoustically active and thermally unstable flows as well.https://acoustics.ippt.pan.pl/index.php/aa/article/view/2117magnetoacoustic wavesdynamics of plasmanonlinear acoustics |
| spellingShingle | Anna PERELOMOVA Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma Archives of Acoustics magnetoacoustic waves dynamics of plasma nonlinear acoustics |
| title | Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma |
| title_full | Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma |
| title_fullStr | Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma |
| title_full_unstemmed | Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma |
| title_short | Nonlinear Excitation of the Non-Wave Perturbations by the Magnetoacoustic Waves in the Non-Isentropic Plasma |
| title_sort | nonlinear excitation of the non wave perturbations by the magnetoacoustic waves in the non isentropic plasma |
| topic | magnetoacoustic waves dynamics of plasma nonlinear acoustics |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/2117 |
| work_keys_str_mv | AT annaperelomova nonlinearexcitationofthenonwaveperturbationsbythemagnetoacousticwavesinthenonisentropicplasma |