Radiation from Relativistic Electrons in Periodic Structures "RREPS-15"

Polarization Characteristics of Diffraction and Cherenkov Radiation from a Dielectric Screen

8 Sept 2015, 18:00

1h 30m

Poster 4. Diffraction Radiation, Smith-Purcell Effect Poster Section

Speakers

Prof. Alexander Potylitsyn (Tomsk Polytechnic University)Mr Anatoly Konkov (Tomsk Polytechnic University)

Description

It is well-known that the polarization is one of the most important radiation characteristic as well as intensity and spectrum. In this report we use the “polarization currents” approach [1, 2] to calculate the polarization characteristics (the Stokes parameters) of diffraction and Cherenkov radiation occurring as a result of uniform motion of a charge near a finite size dielectric screen. The Stokes parameters are determined by the geometry of a screen position relative to an electron beam as well as by permittivity of the screen material. Due to these reasons polarization of radiation can have the circular component (can become elliptic one). The work was partially supported by the program “Nauka” of the Russian Ministry of Education and Science within the Grant No. 3.709.2014/K and the Russian Foundation for Basic Research Grants No. 14-02-31642-mol_a, No. 14-02-01032-A and No. 15-52-50028 YaF_a. **References** 1. Karlovets D V and Potylitsyn A P 2009 *JETP Lett*. **90** 368 2. Kruchinin K O and Karlovets D V 2012 *Russ. Phys. J.* **55** 9