Theory of Coherent Transition Radiation Generated at a Plasma-Vacuum Interface.

Schroeder, C. B. ; Esarey, E. ; van Tilborg, J. ; Leemans, W. P.

Technical Information Center Oak Ridge Tennessee

关键词: Coherent radiation;    Plasma;    Electron beams;    Wakefield accelerators;    Angular distributions;   

RP-ID  :  DE2005836226

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Transition radiation generated by an electron beam, produced by a laser wakefield accelerator operating in the self-modulated regime, crossing the plasma-vacuum boundary is considered. The angular distributions and spectra are calculated for both the incoherent and coherernt radiation. The effects of the longitudinal and transverse momentum distributions on the differential energy spectra are examined. Diffraction radiation from the finite transverse extent of the plasma is considered and shown to strongly modify the spectra and energy radiated for long wavelength radiation. This method of transition radiation generation has the capability of producing high peak power THz radiation.