Large-scale numerical simulation of ionospheric Langmuir turbulence excited by a radio frequency electromagnetic wave

Heelis, T J and Ronald, K and Eliasson, B (2019) Large-scale numerical simulation of ionospheric Langmuir turbulence excited by a radio frequency electromagnetic wave. Plasma Physics and Controlled Fusion, 61 (3). 035013. ISSN 0741-3335 (https://doi.org/10.1088/1361-6587/aaf693)

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Abstract

A numerical simulation is presented concerning an L/O mode electromagnetic wave propagating normally into an overdense magnetised plasma with a smooth density gradient leading to excitation of Langmuir turbulence in the vicinity of the reflection point. The simulation parameters are chosen to represent an ionospheric radio frequency heating experiment but may have relevance to other situations. The simulation model is one-dimensional for large-scale electromagnetic waves and two-dimensional for short-scale electrostatic waves. This allows consideration of local modulational and parametric-decay instabilities as well as the larger scale depletion of the driver electromagnetic wave by anomalous absorption due to the excited turbulence. Simulated growth rates are shown to be in broad agreement with expected values and the evolution of the spatial distribution of the turbulence and driver field profile are presented along with simulated scatter radar spectra.

ORCID iDs

Heelis, T J ORCID logoORCID: https://orcid.org/0000-0001-6562-3848, Ronald, K ORCID logoORCID: https://orcid.org/0000-0002-8585-0746 and Eliasson, B ORCID logoORCID: https://orcid.org/0000-0001-6039-1574;
  • Item type:Article
    ID code:66319
    Dates:
    Date
    Event
    7 February 2019
    Published
    5 December 2018
    Published Online
    5 December 2018
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:10 Dec 2018 15:58
    Last modified:11 Nov 2024 12:02
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/66319
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