Landau-Pomeranchuk-Migdal effect and transition radiation in structured targets - art. no. 076001.

The radiation from high-energy electrons is investigated for the case when a target consists of several separated plates. The spectrum of radiation is considered in the region in which the bremsstrahlung is under the influenc e of the multiple scattering of a projectile (the LPM effect); the polariza tion of a medium and the hard part of the boundary radiation contribute. In this region the general expression for the radiation spectrum is obtained for the N-plate target. A qualitative description of the arising interferen ce pattern is given. [S0556-2821(99)04813-4].