  The transport of collisional particles in stochastic magnetic fields is
studied using the decorrelation trajectory method. The nonlinear effect of
stochastic generation of magnetic island by magnetic line trapping is
considered together with particle collisions. The running diffusion coefficient
is determined for arbitrary values of the statistical parameters of the
stochastic magnetic field and of the collisional velocity. The effect of the
stochastic magnetic islands is analysed.
