摘要: Recent experiments which investigate ion acceleration in 'collisionless' laboratory plasmas are described. The fall into two classes - those involving stationary and time dependent processes.Among the structures accelerate ions sheaths, presheaths, double layers, multiple layers ambipolar potentials. RF is an example of processes. Both considered. Experiments with multidipole triple plasma-type devices novel phenomena associated use Ion Cyclotron Resonance Heating inhomogeneous magnetic field a tandem mirror 'fusion' plasma New phenomenon include pitch angle scattering, electron pumping, ICRF ponderomotive force.