@ARTICLE{Perelomova_Anna_Magnetoacoustic_2020, author={Perelomova, Anna}, volume={vol. 45}, number={No 2}, journal={Archives of Acoustics}, pages={241-251}, howpublished={online}, year={2020}, publisher={Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics}, abstract={The magnetoacoustic heating of a plasma by harmonic or periodic saw-tooth perturbations at a transducer is theoretically studied. The planar fast and slow magnetosound waves are considered. The wave vector may form an arbitrary angle θ with the equilibrium straight magnetic strength. In view of variable θ and plasma-β, the description of magnetosound perturbations and relative magnetosound heating is fairly difficult. The scenario of heating depends not only on plasma-β and θ, but also on a balance between nonlinear attenuation at the shock front and inflow of energy into a system. Under some conditions, the average over the magnetosound period force of heating may tend to a positive or negative limit, or may tend to zero, or may remain constant when the distance from a transducer tends to infinity. Dynamics of temperature specifying heating differs in thermally stable and unstable cases and occurs unusually in the isentropically unstable flows.}, type={Article}, title={Magnetoacoustic Heating of Plasma Caused by Periodic Magnetosound Perturbations with Discontinuities in a Quasi-Isentropic Magnetic Gas}, URL={http://www.czasopisma.pan.pl/Content/116315/PDF/aoa.2020.133145.pdf}, doi={10.24425/aoa.2020.133145}, keywords={non-linear magnetoacoustics, shock waves, adiabatical instability, acoustic activity, acoustic heating}, }