Dynamical turbulent flow on the Galton board with friction and magnetic field
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We study numerically and analytically the dynamics of charged particles on the Galton board, a regular lattice of disc scatters, in the presence of constant external force, magnetic field and friction. It is shown that under certain conditions friction leads to the appearance of a strange chaotic attractor. In this regime the average velocity and direction of particle flow can be effectively affected by electric and magnetic fields. We discuss the applications of these results to the charge transport in antidot superlattices and stream of suspended particles in a viscous flow through scatters.
revtex, 4 pages, 6 figures; revised version of cond-mat/0101006 with magnetic field and refs added; see animated view of turbulent flow at http://w3-phystheo.ups-tlse.fr/~dima/galton
revtex, 4 pages, 6 figures; revised version of cond-mat/0101006 with magnetic field and refs added; see animated view of turbulent flow at http://w3-phystheo.ups-tlse.fr/~dima/galton