Optical transition radiation in presence of acoustic waves for an oblique incidence

Details Optical transition radiation in presence of acoustic waves for an oblique incidence Optical transition radiation in presence of acoustic waves for an oblique incidence

2011-09-19

arxiv.org/abs/1109.4188v1

Int. J. Mod. Phys. B 26 (2012) 1250036

Physics

Accelerator Physics

11 pages, 4 figures. arXiv admin note: substantial text overlap with arXiv:0912.4111

Scientific paper

10.1142/S0217979212500361

Forward transition radiation is considered in an ultrasonic superlattice excited in a finite thickness plate under oblique incidence of relativistic electrons. We investigate the influence of acoustic waves on both the intensity and polarization of the radiation. In the quasi-classical approximation, formulas are derived for the vector potential of the electromagnetic field and for the spectral-angular distribution of the radiation intensity. It is shown that the acoustic waves generate new resonance peaks in the spectral and angular distributions. The heights and the location of the peaks can be controlled by choosing the parameters of the acoustic wave. The numerical examples are given for a plate of fused quartz.

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