Abstract
The influence exerted by an external magnetic field on nonrelativistic cylindrical plasma oscillations is studied. To initialize a slow extraordinary wave in a magnetoactive plasma, the missing initial conditions are constructed using the solution of a linear problem in terms of Fourier–Bessel series. A second-order accurate finite-difference scheme of the MacCormack type is constructed for the numerical simulation of a nonlinear wave. It is shown that, when the external magnetic field is taken into account, the Langmuir oscillations are transformed into a slow extraordinary wave. The velocity of the wave grows with increasing external constant field, which facilitates energy transfer out of the initial localization domain of oscillations. As a result, the well-known effect of off-axial breaking is observed with a time delay and, starting at some critical value of external field, is not observed at all, i.e., a global-in-time smooth solution is formed.
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This paper was published with the financial support of the Ministry of Science and Higher Education of the Russian Federation as part of the program of the Moscow Center for Fundamental and Applied Mathematics under agreement no. 075-15-2019-1621.
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Translated by I. Ruzanova
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Frolov, A.A., Chizhonkov, E.V. Simulation of a Cylindrical Slow Extraordinary Wave in Cold Magnetoactive Plasma. Comput. Math. and Math. Phys. 62, 845–860 (2022). https://doi.org/10.1134/S0965542522050049
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DOI: https://doi.org/10.1134/S0965542522050049