Ion-scale transition of plasma turbulence: Pressure-strain effect
Abstract
We investigate properties of solar wind-like plasma turbulence using direct numerical simulations. We analyze the transition from large, magnetohydrodynamic (MHD) scales to the ion characteristic ones using two-dimensional hybrid (fluid electrons, kinetic ions) simulations. To capture and quantify turbulence properties, we apply the Karman-Howarth-Monin (KHM) equation for compressible Hall MHD (extended by considering the plasma pressure as a tensor quantity) to the numerical results. The KHM analysis indicates that the transition from MHD to ion scales (the so called ion break in the power spectrum) 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.
Keywords
Cite
@article{arxiv.2203.12322,
title = {Ion-scale transition of plasma turbulence: Pressure-strain effect},
author = {Petr Hellinger and Victor Montagud-Camps and Luca Franci and Lorenzo Matteini and Emanuele Papini and Andrea Verdini and Simone Landi},
journal= {arXiv preprint arXiv:2203.12322},
year = {2022}
}
Comments
7 pages, 3 figures