Computer simulation of the radiation of axially channeled electrons

Based on classical electrodynamics and the binary-collision approximation, the radiation emitted by axially channeled electrons has been investigated by computer simulation. It is found that the profiles of the photon spectra depend on whether or not the root-mean-square angle, ${〈{\ensuremath{\theta}}^{2}〉}^{\frac{1}{2}}$ of emission of radiation is larger than the critical angle of the axial channeling. In the case that the root-mean-square angle is larger than the critical angle, the spectral peak of the radiation spectrum is very broad because of the contribution of dechanneled electrons. Especially under special conditions, there is the possibility that one can observe at very low energy the spectral peak which comes from the synchrotron radiation of dechanneled electrons. Comparison between the present simulated results and experimental results has revealed that the classical simulation can predict well the characteristic profile of the radiation of axially channeled electrons.

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