Journal article
Characterizing the velocity-space signature of electron Landau damping
Journal of plasma physics, Vol.89(5), 905890514
10/18/2023
DOI: 10.1017/S0022377823001046
Appears in UI Libraries Support Open Access
Abstract
Plasma turbulence plays a critical role in the transport of energy from large-scale magnetic fields and plasma flows to small scales, where the dissipated turbulent energy ultimately leads to heating of the plasma species. A major goal of the broader heliophysics community is to identify the physical mechanisms responsible for the dissipation of the turbulence and to quantify the consequent rate of plasma heating. One of the mechanisms proposed to damp turbulent fluctuations in weakly collisional space and astrophysical plasmas is electron Landau damping. The velocity-space signature of electron energization by Landau damping can be identified using the recently developed field–particle correlation technique. Here, we perform a suite of gyrokinetic turbulence simulations with ion plasma beta values $\beta _i = 0.01, 0.1, 1$ and $10$ and use the field–particle correlation technique to characterize the features of the velocity-space signatures of electron Landau damping in turbulent plasma conditions consistent with those observed in the solar wind and planetary magnetospheres. We identify the key features of the velocity-space signatures of electron Landau damping as a function of varying plasma $\beta _i$ to provide a critical framework for interpreting the results of field–particle correlation analysis of in situ spacecraft observations of plasma turbulence.
Details
- Title: Subtitle
- Characterizing the velocity-space signature of electron Landau damping
- Creators
- Sarah A. Conley - 1Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USAGregory G. Howes - University of IowaAndrew J. McCubbin - Johns Hopkins University Applied Physics Laboratory
- Resource Type
- Journal article
- Publication Details
- Journal of plasma physics, Vol.89(5), 905890514
- DOI
- 10.1017/S0022377823001046
- ISSN
- 0022-3778
- eISSN
- 1469-7807
- Publisher
- Cambridge University Press
- Number of pages
- 27
- Grant note
- DOI: 10.13039/100016821, name: Aeronautics Research Mission Directorate, award: 80NSSC18K1217; DOI: 10.13039/100016821, name: Aeronautics Research Mission Directorate, award: 80NSSC18K1371; DOI: 10.13039/100016821, name: Aeronautics Research Mission Directorate, award: 80NSSC20K1509
- Language
- English
- Date published
- 10/18/2023
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984482458102771
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