Generalized surface current method in the macroscopic theory of diffraction radiation

Details Generalized surface current method in the macroscopic theory of diffraction radiation Generalized surface current method in the macroscopic theory of diffraction radiation

2009-08-17

arxiv.org/abs/0908.2331v1

Phys.Lett.A373:1988,2009

Physics

Accelerator Physics

8 pages, 8 figures

Scientific paper

10.1016/j.physleta.2009.03.060

The surface current method known in the theory of electromagnetic waves diffraction is generalized to be applied for the problems of diffraction radiation generated by a charged particle moving nearby an ideally-conducting screen in vacuum. An expression for induced surface current density leading to the exact results in the theory of transition radiation is derived, and by using this expression several exact solutions of diffraction radiation problems are found. Limits of applicability for the earlier known models based on the surface current conception are indicated. Properties of radiation from a semi-plane and from a slit in cylinder are investigated at the various distances to observer.

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