Cerenkov superradiance from a subnanosecond electron bunch in a sectional decelerating system
- Yalandin, M I
- Shunailov, S A
- Shpak, V G
- Ginzburg, N S
- Zotova, I V
- Sergeev, A S
- Phelps, A D R
- Cross, A W
- Aitken, P
DOIAbstract
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
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