Observation of Coherent Cerenkov Radiation from Plasma
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概要
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A highly relativistic bunched electron been accelerated by a linear accelerator is injected into a plasma in the direction parallel to a weak magnetic field. When the plasma frequency is matched to the accelerator frequency (8980 MHz), a strong polarized radiation is observed in the propagation direction perpendicular to the magnetic field. The electric vector of the radiation is perpendicular to the magnetic field and the spectrum is limited to the accelerator frequency. The microwave power received in a horn antenna (0.1 ster.) is about 0.1μW for a 1 mA beam current. The properties of this radiation are consistently explained by assigning it as the coherent Cerenkov emission of the extraordinary waves. The observed power is lower than the value expected from the theory, but this is possibly due to dissipation of waves in the plasma.
- 社団法人日本物理学会の論文
- 1973-04-05
著者
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NISHIKAWA Tetsuji
National Laboratory for High Energy Physics
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Nishikawa Kyoji
Department Of Applied Physics University Of Tokyo
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MIZUMACHI Yoshihiko
Department of Physics, Hiroshima University
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Mizumachi Yoshihiko
Department Of Applied Physics University Of Tokyo
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Mizumachi Yoshihiko
Department Of Physics Hiroshima University:(present Address) National Laboratory For High Energy Phy
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