PreprintCC BY 4.0arXiv
Explosive instability, quiet plasma: phase-space cascades, coherent vortices, and transport suppression in a dipole pair plasma
Abstract
Turbulence in a magnetised dipole pair plasma can transfer electrostatic energy into coherent flows while carrying entropy to small scales. This occurs via a dual cascade in a four-dimensional phase space, whereby advection by the fluctuating electric field nonlinearly phase-mixes the transit-averaged particle motion. Below a critical pressure gradient, zonal bands suppress the kinetic mode, leaving a transport floor. When the fluid mode is unstable, an explosive burst collapses into a zonal condensate on which two vortices "breathe" by reversible energy exchange, without causing net transport.
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BibTeX
@misc{kennedy2026explosive,
title = {{Explosive instability, quiet plasma: phase-space cascades, coherent vortices, and transport suppression in a dipole pair plasma}},
author = {Daniel Kennedy and Gabriel G Plunk},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.35048},
eprint = {2610.35048},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.35048},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Explosive instability, quiet plasma: phase-space cascades, coherent vortices, and transport suppression in a dipole pair plasma
AU - Daniel Kennedy
AU - Gabriel G Plunk
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2610.35048
UR - https://arxiv.org/abs/2610.35048
AB - Turbulence in a magnetised dipole pair plasma can transfer electrostatic energy into coherent flows while carrying entropy to small scales. This occurs via a dual cascade in a four-dimensional phase space, whereby advection by the fluctuating electric field nonlinearly phase-mixes the transit-averaged particle motion. Below a critical pressure gradient, zonal bands suppress the kinetic mode, leaving a transport floor. When the fluid mode is unstable, an explosive burst collapses into a zonal condensate on which two vortices "breathe" by reversible energy exchange, without causing net transport.
ER -