Coherent effects in backward EUV and x-ray transition radiation of a bunch of electrons from thin wires

A. A. Tishchenko; D. Yu. Sergeeva; M. N. Strikhanov

doi:10.1117/12.2182482

12 May 2015 Coherent effects in backward EUV and x-ray transition radiation of a bunch of electrons from thin wires

A. A. Tishchenko, D. Yu. Sergeeva, M. N. Strikhanov

Proceedings Volume 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources; 95090Q (2015) https://doi.org/10.1117/12.2182482
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

In this paper we consider X-Ray and EUV Transition radiation propagating in backward direction which is generated by the ultrarelativistic electron bunch crossing the target. The target consists of periodical set of thin wires with the rectangular cross-section. We obtain the analytical expressions for distribution of the energy of the transition radiation per solid angle and frequency. In high frequency region (X-Ray, EUV), where the wavelength of radiation is less than length of a beam, the main part of radiation is incoherent. In this case the radiation from electron bunches is described by the so called incoherent form-factor. We obtain and analyse the expression for incoherent form-factor. In this work we show that incoherent form-factor arises always when the size of a target is finite and that it depends on the ratio between the transversal size of the bunch and the production of wavelength and Lorentz-factor of the charged particles. The coherent effects of target and the electron bunch play an important role in increasing the intensity of radiation and also change the spatial distribution of radiation.

Citation Download Citation

A. A. Tishchenko, D. Yu. Sergeeva, and M. N. Strikhanov "Coherent effects in backward EUV and x-ray transition radiation of a bunch of electrons from thin wires", Proc. SPIE 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources, 95090Q (12 May 2015); https://doi.org/10.1117/12.2182482

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