Search results for: MAGNETOACOUSTICS - Bridge of Knowledge

Search

Search results for: MAGNETOACOUSTICS

Best results in : Research Potential Pokaż wszystkie wyniki (3)

Search results for: MAGNETOACOUSTICS

Other results Pokaż wszystkie wyniki (34)

Search results for: MAGNETOACOUSTICS

  • Unusual divergence of magnetoacoustic beams

    Publication

    Two-dimensional magnetosonic beams directed along a line forming a constant angle h with the equilibrium straight magnetic field are considered. Perturbations in a plasma are described by the system of ideal magnetohydrodynamic equations. The dynamics of perturbations in a beam are different in the cases of fast and slow modes, and it is determined by h and equilibrium parameters of a plasma. In particular, a beam divergence may...

    Full text available to download

  • Lack of magnetoacoustic emission in iron with 6.5% silicon

    Publication

    - JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS - Year 2008

    Zjawisko emisji magnetoakustycznej (EMA) na ogół tłumaczy się dwoma przyczynami: ruchem nie 180-cio stopniowych granic domenowych (1) lub kreacją i anihilacją domen magnetycznych. Artykuł prezentuje silne dowody na poparcie faktu, że to właśnie ruch granic nie 180-cio stopniowych odpowiada za powstawanie efektu EMA. Wynika to z wyników pomiarów dających zerowe natężenie efektu EMA przeprowadzonych dla szerokiego zakresu naprężeń...

    Full text to download in external service

  • Magnetoacoustic heating in a quasi-isentropic magnetic gas

    Publication

    The nonlinear heating of a plasma which associates with the transfer of energy of magnetoacoustic waves into that of the entropy mode, is analytically studied. A plasma is uniform and motionless at equilibrium. Perturbations in a plasma are described by a system of ideal magnetohydrodynamic equations. The equilibrium straight magnetic strength and the wave vector form a constant angle which varies from 0 to π/2. There exist four...

    Full text available to download

  • MAGNETOACOUSTIC HEATING AND STREAMING IN A PLASMA WITH FINITE ELECTRICAL CONDUCTIVITY

    Publication

    Nonlinear effects of planar and quasi-planar magnetosound perturbations are discussed. Plasma is assumed to be an ideal gas with a finite electrical conductivity permeated by a magnetic filed orthogonal to the trajectories of gas particles. the excitation of non-wave modes in the filed of intense magnetoacoustic perturbations, i.e., magnetoaciustic heating and streaming, is discussed. The analysis includes a derivation if instantaneous...

    Full text available to download

  • Nonlinear Interaction of Magnetoacoustic Modes in a Quasi-Isentropic Plasma Flow

    Publication

    The nonlinear interaction of magnetoacoustic waves in a plasma is analytically studied. A plasma is an open system. It is affected by the straight constant equilibrium magnetic flux density forming constant angle with the wave vector which varies from 0 till . The nonlinear instantaneous equation which describes excitation of secondary wave modes in the field of intense magnetoacoustic perturbations is derived by use of projecting....

    Full text available to download