A possible explanation was suggested for the experimentally observed enhancement of mass transport processes in ionic crystalline solids in a high-frequency electromagnetic field. It was based upon ponderomotive effects which occurred due to non-linear interactions of the high-frequency field with the space charge that it induced near to the crystal surface. Due to the action of the tangential component of the field in the near-surface amorphized layer, where the vacancy mobility was greater than it was in the bulk, the ponderomotive effects were of sufficient strength to produce the experimentally observed phenomena.

K.I.Rybakov, V.E.Semenov: Physical Review B, 1995, 52[5], 3030-3