Peculiarity of relativistic positron radiation during planar channeling in a bent crystal

Computer analysis for radiation spectra of relativistic positrons is carried out during planar channeling in a bent crystal. It is shown that in spectrum it is possible to discriminate two ranges: low-energy (quasisynchrotron) one and high-energy one, or range of radiation during channeling (quasiondulator one). Att crystal small bending the radiation spectrum is mainly quasimodulator one while as opposed to dtraight crystal subharmonics occur at lower frequence for each harmonic. Additional maximum within low frequency range caused by particle quasisynchronous radiation at movement along the bent channel occurs at crystal strong bending in radiation spectrum of channeled positions changes occirring within quasisynchrotron radiation spectrum of particle which moves along periphery arc with occurrence of particle radial oscillations near equilibrium orbit are determined