Details

Autor(en) / Beteiligte

• Ginzburg, N.S.
• Zotova, L.V.
• Novozhilova, N.Yu
• Sergeev, A.S.
• Phelps, A.D.R.
• Cross, W.
• He, W.
• Ronald, K.
• Wiggins, S.M.
• Shpak, V.G.
• Yalandin, M.I.
• Shunailov, S.A.
• Ulmaskulov, M.R.
• Tarakanov, V.P.

Titel

Novel source of powerful subnanosecond microwave pulses based on superradiance

Ist Teil von

• Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 1998, p.21-26

Ort / Verlag

IEEE

Erscheinungsjahr

1998

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• Describes a novel source of powerful subnanosecond microwave pulses based on superradiance. This source exploits coherent stimulated emission of intense subnanosecond electron bunches moving through a periodic waveguide and interacting with backward propagating wave. The 300 ps /60 MW microwave Ka band pulses were generated with repetition frequencies of up to 25pps. Observation of RF breakdown of ambient air as well as the illumination of a panel of neon bulbs with a finely structured pattern corresponding to the excitation of the TM/sub 01/ mode confirms the high level of the absolute power. The experimental results are compare with results of the numerical simulation based on the particle-in-cell (PIC) code KARAT. The simulations show that mechanism of microwave pulse generation is associated with self-bunching and the mutual influence of a different part of the electron pulse due to slippage of the wave with respect to the electrons and thus can be interpreted as superradiance.