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.
Original language | English |
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Pages (from-to) | 948-950 |
Number of pages | 3 |
Journal | Technical Physics Letters |
Volume | 23 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 1997 |
Keywords
- superradiance
- cherenkov maser
- free electron laser
- electron beam
- electron bunches