Coherent radiation of relativistic electrons in wire metamaterial

11th International Symposium on Radiation from Relativistic Electrons in Periodic Structures

Soboleva, V.^1 ; Naumenko, G.^1 ; Bleko, V.^1

Tomsk Polytechnic University, Lenina str. 2, Tomsk

634050, Russia^1

关键词: Angular characteristics;    Bunched electron beams;    Cherenkov radiations;    Experimental conditions;    Experimental investigations;    Millimeter wavelength;    Relativistic electron;    Relativistic electron beam;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/732/1/012007/pdf
DOI  :  10.1088/1742-6596/732/1/012007

来源: IOP

【 摘 要 】

We present in this work the experimental investigation of the interaction of relativistic electron field with wire metamaterial. The measurements of the spectral-angular characteristics of coherent radiation were done in millimeter wavelength region in far-field zone at the relativistic electron beam with energy of 6 MeV. Used target represent the right triangular prism that consist of periodic placed copper wires. We showed that bunched electron beam passing near wire metamaterial prism generates coherent Cherenkov radiation. Spectral angular characteristics of radiation from the wire target were compared with the characteristics of Cherenkov radiation generated in similar experimental conditions in a dielectric target (Teflon prism) that has the same form and sizes.