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On the Nonlinear Effects of Magnetoacoustic Perturbations in Optically Thin Quasi-Isentropic Plasmas
Abstract
Nonlinear effects of planar magnetosound perturbations in a plasma are discussed. Plasma is non-adiabatic due to optically thin radiation and external heating. For these reasons, thermal instability of a plasma may appear which makes it acoustically active. The plasma is assumed to be initially homogeneous ideal gas with infinite electrical conductivity permeated by a straight magnetic field which is orthogonal to the trajectories of gas particles. The instantaneous dynamic equations which describe nonlinear effects of intense sound in quasi-isentropic plasma, are derived. Nonlinear interaction of periodic and aperiodic magnetoacoustic perturbations with the non-wave modes, are discussed. The conclusions concern dissipative or active behavior of magnetoacoustic perturbations which is determined by the kind of the heating-cooling function.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.12693/APhysPolA.133.194
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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ACTA PHYSICA POLONICA A
no. 133,
pages 194 - 200,
ISSN: 0587-4246 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Perelomova A., Ratkowski F.: On the Nonlinear Effects of Magnetoacoustic Perturbations in Optically Thin Quasi-Isentropic Plasmas// ACTA PHYSICA POLONICA A. -Vol. 133, (2018), s.194-200
- DOI:
- Digital Object Identifier (open in new tab) 10.12693/aphyspola.133.194
- Verified by:
- Gdańsk University of Technology
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