Kinetic modeling of Nernst effect in magnetized hohlraums

A. S. Joglekar, C. P. Ridgers, R. J. Kingham, A. G. R. Thomas
2016 Physical review. E  
Article: Joglekar, A. S., Ridgers, Christopher Paul orcid.org/0000-0002-4078-0887, Kingham, R J et al. (1 more author) (2016) Kinetic modeling of Nernst effect in magnetized hohlraums. 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
more » ... 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.
doi:10.1103/physreve.93.043206 pmid:27176417 fatcat:ok76pr23s5elzhodqi5m33pmhu