Radiation from the Channeling of 10-GeV Positrons by Silicon Single Crystals

Abstract
An investigation has been carried out of the radiation emitted by 10-GeV positrons planar channeled in perfect single crystals of silicon. The radiation is found to be narrowly peaked in direction and energy as compared with normal bremsstrahlung radiation, consistent with theoretical predictions. Strong evidence is found for structure not resolved in previous experiments, particularly at angles near the critical angle for channeling where the radiation exhibits a marked periodic structure.