Time-Dependent Perpendicular Transport of Energetic Particles for Different Turbulence Configurations and Parallel Transport Models

TL;DR

This paper integrates a novel time-dependent perpendicular transport theory with models of parallel transport and turbulence configurations to explore various particle transport regimes, including ballistic, sub-diffusive, and diffusive behaviors.

Contribution

It combines a new non-linear, time-dependent perpendicular transport theory with parallel transport models and turbulence configurations, expanding understanding of energetic particle transport regimes.

Findings

Identification of parameter regimes for different transport behaviors

Demonstration of the model's ability to describe ballistic, sub-diffusive, and diffusive transport

Insights into the influence of turbulence configurations on particle transport

Abstract

Recently a new theory for the transport of energetic particles across a mean magnetic field was presented. Compared to other non-linear theories the new approach has the advantage that it provides a full time-dependent description of the transport. Furthermore, a diffusion approximation is no longer part of that theory. It is the purpose of the current paper to combine this new approach with a time-dependent model for parallel transport and different turbulence configurations in order to explore the parameter regimes for which we get ballistic transport, compound sub-diffusion, and normal Markovian diffusion.