EGU22-8357
https://doi.org/10.5194/egusphere-egu22-8357
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Ion-scale transition of plasma turbulence: Pressure-strain effect

Petr Hellinger1, Victor Montagud-Camps1, Luca Franci2, Lorenzo Matteini3, Emanuele Papini4, Andrea Verdini5,6, and Simone Landi5,6
Petr Hellinger et al.
  • 1Astronomical Institute, CAS, Ondrejov/Prague, Czechia
  • 2Queen Mary University of London, UK
  • 3Imperial College London, UK
  • 4INAF - Istituto di Astrofisica e Planetologia Spaziali, Roma, Italy
  • 5Dipartimento di Fisica e Astronomia, Universita degli Studi di Firenze, Firenze, Italy
  • 6INAF - Osservatorio Astrofisico di Arcetri, Firenze, Italy

We investigate properties of solar-wind like plasma turbulence using direct numerical simulations. We analyze the transition from large (magnetohydrodynamic) scales to ion ones using two-dimensional hybrid (fluid electrons, kinetic ions) simulations of decaying turbulence. To quantify turbulence properties we apply spectral transfer and Karman-Howarth-Monin equations for extended compressible Hall MHD to the simulated results. The simulation results indicate that the transition from MHD to ion scales (the so called ion break) results from a combination of an onset of Hall physics and of an effective dissipation owing to the pressure-strain energy-exchange channel and resistivity. We discuss the simulation results in the context of the solar wind.

How to cite: Hellinger, P., Montagud-Camps, V., Franci, L., Matteini, L., Papini, E., Verdini, A., and Landi, S.: Ion-scale transition of plasma turbulence: Pressure-strain effect, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-8357, https://doi.org/10.5194/egusphere-egu22-8357, 2022.

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