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On the Issue of Possibility of Reducing Anomalous Absorption of Extraordinary Pump Wave in a Wide Range of Plasma Densities

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Abstract

The consequences are studied of the localization effect of ion Bernstein (IB) waves excited in secondary decay processes accompanying the development of low-threshold parametric decay instability of the extraordinary pump wave, which results in the excitation of the extraordinary wave and the upper-hybrid (UH) wave localized in the plasma. It is shown that in experiments on electron cyclotron resonance plasma heating at the second resonance harmonic, the effect discovered results in a decrease in both the saturation level of primary instability and anomalous absorption level of the pump wave.

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Funding

Analytical studies were supported by the Russian Science Foundation (project no. 22-12-00010); numerical simulations were supported by the Ioffe Institute under the State Contract no. 0040-2019-0023, and the development of the computer code for simulating the PDI saturation was supported by the Ioffe Institute under the State Contract no. 0034-2021-0003.

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Authors and Affiliations

  1. Ioffe Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    E. Z. Gusakov & A. Yu. Popov

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  1. E. Z. Gusakov
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  2. A. Yu. Popov
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Correspondence to A. Yu. Popov.

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The authors declare that they have no conflicts of interest.

Additional information

In memory of A.V. Timofeev

Translated by I. Grishina

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Gusakov, E.Z., Popov, A.Y. On the Issue of Possibility of Reducing Anomalous Absorption of Extraordinary Pump Wave in a Wide Range of Plasma Densities. Plasma Phys. Rep. 49, 936–948 (2023). https://doi.org/10.1134/S1063780X23600767

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  • DOI: https://doi.org/10.1134/S1063780X23600767

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