Gamma radiation spectra of 1200MeV electrons from the single crystals of the beryllium 1.2mm thick, silicon 1.5mm and 15mm thick and tungsten 1.18mm thick along of the crystallographic axes were measured. Also spectral-angular ...

This paper deals with restrictions on the use of so-called kinematical theory of coherent polarization X-ray radiation by relativistic electrons in a single crystal target.

It is shown that the whirligig principle can be used for stabilization of the initial states of some classical and quantum systems. This feature of the whirligig principle is demonstrated by simple examples. The most ...