Decay Processes in Highly Turbulent Plasma
DOI:
https://doi.org/10.48001/joeeed.2024.2125-34Keywords:
Collapse of Langmuir waves, Decay processes, Isotropic and highly turbulent plasma, Probabilities of decay processes, Soliton turbulenceAbstract
Recent years have been characterized by a large scope of theoretical and experimental research in plasma physics. Plasma effects are increasingly used in astrophysics, solid state physics, etc., as well as in research on the problem of plasma confinement and heating. One of these effects is decay processes in plasma. The processes of induced emission of some waves by others are called decay processes. When this name is used, it means the nonlinear interaction of waves, in which one of the waves breaks up into others, or, conversely, two waves merge into one. The kinetic equation describing such interactions takes into account both direct and reverse decay processes. There is a known general method for calculating of the probabilities of decay processes in isotropic plasma. The purpose of the article is to calculate the probabilities of decay processes in highly turbulent plasma. Currently, theoretical studies of strong turbulence are based on the following approaches: the hypothesis of soliton turbulence; on the hypothesis of collapse of Langmuir waves; on the statistical theory of strongly interacting perturbations. This article is devoted to obtaining a general formula for calculating the probabilities of such processes as l2 + S → l1, l + l → t, that is, the merging of Langmuir and ion-acoustic waves, and the merging of two Langmuir waves into a transverse wave with Langmuir plasma frequency.
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