Radiation spectra and angular distribution of emitted quanta for planar channelled particles: dependence on particle energy

Using a method of calculating the radiation characteristics for the motion in an arbitrary one-dimensional potential, developed in the previous paper, we look here for the maximum in the number of emitted photons as a function of particle energy for different amplitudes of oscillations, divergence angles in a plane parallel to the trapping crystal planes and harmonic numbers. The problem is treated in the classical approximation. A numerical example is given for positron channelling in the (1,1,0) direction of a Silicon crystal. The influence of the refraction index is discussed briefly