Controlling chaotic transport in a Hamiltonian model of interest to   magnetized plasmas
  We present a technique to control chaos in Hamiltonian systems which are close to integrable. By adding a small and simple control term to the perturbation, the system becomes more regular than the original one. We apply this technique to a model that reproduces turbulent ExB drift and show numerically that the control is able to drastically reduce chaotic transport. 
Guido Ciraolo, Cristel Chandre, Ricardo Lima, Michel Vittot, Marco   Pettini, Charles Figarella, Philippe Ghendrih