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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Experimental observation of cyclotron superradiance under group synchronism conditions

Ginzburg, N S and Zotova, I V and Sergeev, A S and Konoplev, I V and Phelps, A D R and Cross, A W and Cooke, S J and Shpak, V G and Yalandin, M I and Shunailov, S A and Ulmaskulov, M R (1997) Experimental observation of cyclotron superradiance under group synchronism conditions. Physical Review Letters, 78 (12). pp. 2365-2368. ISSN 0031-9007

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Abstract

Intense microwave pulses (several hundreds of kilowatts) of ultrashort duration (less than 0.5 ns) were obtained from an ensemble of electrons rotating in a uniform magnetic field. The comparison with theoretical simulations proves that this emission can be interpreted as cyclotron superradiance. The maximum radiation power was achieved under group synchronism conditions, when the electron bunch translational velocity coincides with the group velocity of the wave propagating in the waveguide.