Tips for Deciphering and Quick Calculation of Radiation Spectra

Abstract

Radiation spectra from ultra-relativistic electrons in thin [$T\ll l_f(\omega )$] and thick [$T\gg l_f(\omega )$] targets are discussed. The method of simplified averaging is described by examples of Landau-Pomeranchuk-Migdal effect and radiation at doughnut scattering. General infrared and ultraviolet asymptotic properties of radiation spectra are discussed.

Comments: 6 pages, 4 figures, Proceedings of RREPS-2017, DESY, Hamburg, Germany