KINETIC EFFECTS IN STOCHASTIC TOPOLOGICALLY NONTRIVIAL FIELD

The kinetic description of a collisionless system of particles in an e xternal stochastic field possessing helicity is examined. The kinetic equation which contains an additional term proportional to the helicit y is obtained. The solution describing evolution of the distribution f unction for arbitrary initial conditions is found. Particular examples of such an evolution and some new kinetic effects connected with heli city are discussed. It is shown that a particle beam with inhomogeneou s velocity profile in an external stochastic helical field generates a new particle flow in transverse direction.