  Gamma radiation spectra of 1200 MeV electrons in the single crystals of the
beryllium 1.2 mm thick, silicon 1.5 mm and 15.0 mm thick and tungsten 1.18 mm
thick along of the crystallographic axes were measured. Also spectral-angular
distributions of gamma radiation in the silicon single crystals 1.5 mm thick
along of the crystallographic axes <100>, <110> and <111> were measured. On the
basis of these measurements the radiation spectra for the different solid
angles up to 6.97*10-6 sr were obtained. Gamma radiation spectra of the
electrons with energy 1200, 600 and 300 MeV in the Si single crystals 15.0 mm
thick and the W thick 3.0 mm also were measured. The above results complement
the previously obtained experimental and theoretical data and can be used to
create a source of intense gamma-ray beams for radiation technologies.
