Radiation from channeling electrons, stimulated by laser beam

Fast electrons, moving in a channel formed by crystal planes, may occupy only discrete transverse energy quantum levels. Transition between levels can be accompanied with emitting high energy photons. This radiation can be additionally and resonantly stimulated by external photons having energy equal to the distance between certain channeling electron transverse energy levels in the accompanying system. Due to the Doppler effect, the optical frequency laser beam can provoke intensive gamma-radiation from channeling electrons. The effect can be also used for precise resonance measuring of transverse energies of channeling electrons. (C) 2013 Elsevier B.V. All rights reserved.