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 influence of the multiple scattering of a projectile (the LPM effect); the polarization 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 interference pattern is given.

• Received 23 February 1999

DOI:https://doi.org/10.1103/PhysRevD.60.076001