Nernst Effect in Magnetized Plasmas
Abstract
We present nanosecond timescale Vlasov-Fokker-Planck-Maxwell modeling of magnetized plasma transport and dynamics in a hohlraum with an applied external magnetic field, under conditions similar to recent experiments. Self-consistent modeling of the kinetic electron momentum equation allows for a complete treatment of the heat flow equation and Ohm's Law, including Nernst advection of magnetic fields. In addition to showing the prevalence of non-local behavior, we demonstrate that effects such as anomalous heat flow are induced by inverse bremsstrahlung heating. We show magnetic field amplification up to a factor of 3 from Nernst compression into the hohlraum wall. The magnetic field is also expelled towards the hohlraum axis due to Nernst advection faster than frozen-in-flux would suggest. Non-locality contributes to the heat flow towards the hohlraum axis and results in an augmented Nernst advection mechanism that is included self-consistently through kinetic modeling.
Cite
@article{arxiv.1508.07260,
title = {Nernst Effect in Magnetized Plasmas},
author = {Archis S. Joglekar and Alexander G. R. Thomas and Christopher P. Ridgers and Robert J. Kingham},
journal= {arXiv preprint arXiv:1508.07260},
year = {2015}
}