ENHANCEMENT OF HIGH-FREQUENCY FIELD IN NEAR-IDEAL METAL MIXTURE

The a.c. electric field distribution is studied in composite, containi ng materials with small local losses. The possibility that a 2D two-co mponent system can have effective absorption in the absence of local a bsorption was evidenced (A.M. Dykhne, Zh. Eksp. Teor. Fiz. 59 (1970) 1 10). We study the second and higher moments of electric field and show that they diverge with the decrease of local absorption, The 3D syste m near the percolation threshold is also discussed. The observation of giant field fluctuations in granular films first discovered by Brouer s et al. and Lagarkov et al, is explained.