Charged particle diffusion in isotropic random magnetic fields

Understand

The investigation of the diffusive transport of charged particles in a turbulent magnetic field remains a subject of considerable interest.

• Research has most frequently concentrated on determining the diffusion coefficient in the presence of a mean magnetic field.
• Here we consider diffusion of charged particles in fully three-dimensional isotropic turbulent magnetic fields with no mean field, which may be pertinent to many astrophysical situations.
• We identify different ranges of particle energy depending upon the ratio of the Larmor radius of the charged particle to the characteristic outer length scale of the turbulence.