LANDAU-POMERANCHUK-MIGDAL EFFECT FOR FINITE TARGETS. A FEYNMAN PATH INTEGRAL APPROACH

Abstract

In this paper a straighforward Feynman path integral formalism is discussed and applied to the problem of the suppression of bremsstrahlung radiation of long-wavelength photons, the Landau-Pomeranchuk-Migdal (LPM) effect, in a target of finite thickness with multiple scattering. Taking into account the side effect yields corrections to the Migdal theory. The method is also applied to the treatment of the standard LPM effect in the presence of an external field. In brief, it is shown that preliminary numerical results are in very good agreeing with experimental data.