On the relativistic electron radiation in monocrystals

Radiation of relativistic electrons moving in a crystal near the crystallographical axis under the conditions of superbarrier motion is considered within the frames of classical electrodynamics. Radiation spectrum of superbarrier electrons is obtained for an averaged potential of the v(e) approximately exp(-e) chain. The maximum is shown to be observed for certain electron inlet angles relatively to the chain in the radiation spectrum. It permits to conclude that the maximum in experimentally detected spectra may be caused by superbarrier particle radiation