Radiation spectra of relativistic electrons in diamond and silicon single crystals

Abstract
Measurements have first been made of the absolute cross sections for the radiation of 1.2 GeV electrons moving near the ⟨110⟩ crystallographic axis of diamond and silicon single crystals. 17- and 25-fold excesses of the electron radiation intensity over the bremsstrahlung intensity have been established for silicon and diamond crystals, respectively.