Title screen

We investigate the spectral-angular distribution for the radiation emitted by a pointcharge rotating inside a cylindrical grating with conducting strips. Two types of theradiation processes are realized: synchrotron and Smith-Purcell radiations. Theirrelative contributions to the total radiation intensity are discussed in variousasymptotic regions of the parameters describing the diffraction grating and for largeharmonics. The region of the parameters is specified for which the interferenceeffects between the synchrotron and Smith-Purcell radiation is essential.