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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 Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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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.