Anomalous penetration of an electromagnetic signal in a thin metallic plate under strong magnetodynamic nonlinearity conditions

A new phenomenon of anomalous transparency of a metallic plate upon the pas sage of a strong transport current is predicted. It is shown that the elect romagnetic field of an incident wave may be carried from the skin layer to the opposite face by electrons trapped by the alternating intrinsic magneti c field of the transport current even under the conditions of the extremely anomalous skin effect for which the skin depth is the smallest parameter h aving the dimensions of length. The mechanism of the rf field transport eff ectively operates at low temperature, when the mean free path of charge car riers is large. The wave field distribution in the plate is analyzed. The c yclotron resonance at trapped electrons, which emerges due to their periodi c return to the skin layer, is predicted and qualitatively analyzed. (C) 20 01 MAIK "Nauka/Interperiodica".