Abstract
Stochastic transport of a two-dimensional (2D) dusty plasma liquid with a perpendicular magnetic field is studied. Superdiffusion is found to occur especially at higher magnetic fields with of order unity. Here, is the ratio of the cyclotron and plasma frequencies for dust particles. The mean-square displacement is found to have an exponent , indicating superdiffusion, with increasing monotonically to as increases to unity. The 2D Langevin molecular dynamics simulation used here also reveals that another indicator of random particle motion, the velocity autocorrelation function, has a dominant peak frequency that empirically obeys .
- Received 27 November 2013
- Revised 14 May 2014
DOI:https://doi.org/10.1103/PhysRevE.90.013105
©2014 American Physical Society