Čerenkov superradiance from a subnanosecond electron bunch in a sectional decelerating system |
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Authors: | M. I. Yalandin S. A. Shunailov V. G. Shpak N. S. Ginzburg I. V. Zotova A. S. Sergeev A. D. R. Phelps A. W. Cross P. Aitken |
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Affiliation: | (1) Institute of Experimental Physics, Urals Branch of the Russian Academy of Sciences, Ekaterinburg;(2) Institute of Applied Physics, Russian Academy of Sciences, Nizhnii Novgorod;(3) Strathclyde University, Glasgow, Great Britain |
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Abstract: | Induced coherent radiation (superradiance) from a subnanosecond electron bunch in a combined decelerating system has been investigated experimentally. In a first section formed by a periodically modulated waveguide, the density of the bunch is modulated and it then radiates in a second section formed by a waveguide partially filled with a dielectric. At an electron energy of 250 keV and a peak current of 800 A, millimeter radiation pulses with powers up to 2 MW and lengths up to 800 ps were obtained. Pis’ma Zh. Tekh. Fiz. 23, 14–19 (December 26, 1997) |
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