Synchrotron radiation inside a dielectric cylinder

Details Synchrotron radiation inside a dielectric cylinder Synchrotron radiation inside a dielectric cylinder

2011-05-26

arxiv.org/abs/1105.5245v1

Int. J. Mod. Phys. B 26 (2012) 1250033

Physics

Accelerator Physics

15 pages, 5 figures

Scientific paper

10.1142/S0217979212500336

We investigate the electromagnetic fields generated by a charged particle rotating inside a dielectric cylinder immersed into a homogeneous medium. The expressions for the bound modes of the radiation field are derived in both interior and exterior regions. The radiation intensity for the modes propagating inside the cylinder is evaluated by using two different ways: by evaluating the work done by the radiation field on the charge and by evaluating the energy flux through the cross-section of the cylinder. The relation between these two quantities is discussed. We investigate the relative contributions of the bound modes and the modes propagating at large distances from the cylinder to the total radiation intensity. Numerical examples are given for a dielectric cylinder in the vacuum. It is shown that the presence of the cylinder can lead to the considerable increase of the synchrotron radiation intensity.

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