SPREADING PARTICLE TRAJECTORIES NEAR A PERFECTLY REFLECTING SURFACE IN A TILTED MAGNETIC-FIELD

A description is given for electron trajectories near a specularly ref lecting surface in a magnetic field that intersects the surface at a s hallow angle. A simple analytical theory of electron motion is present ed. It is shown that an electron experiences a large number of reflect ions from the wall and makes a long path along the surface, before eve ntually returning to the plasma. The importance of this phenomenon for the sheath structure and electron cross-field transport is briefly di scussed. (C) 1995 American Institute of Physics.