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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.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Experimental observation of Cherenkov superradiance from an intense electron bunch

Ginzburg, N S and Sergeev, A S and Novozhilova, Y V and Zotova, I V and Rosenthal, R M and Phelps, A D R and Cross, A W and Aitken, P and Shpak, V G and Yalandin, M I and Shunailov, S A and Ulmaskulov, M R (2000) Experimental observation of Cherenkov superradiance from an intense electron bunch. Optics Communications, 175 (1-3). pp. 139-146. ISSN 0030-4018

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Abstract

Experimental results are presented of the observation of stimulated Cherenkov radiation when intense subnanosecond electron bunches were moving through a dielectric-loaded waveguide. The ultrashort duration microwave pulses (up to 400 ps which is equivalent to similar to 10 periods of the radiation) in combination with specific dependencies of peak microwave power on interaction length demonstrate that this emission can be interpreted as coherent superradiant (SR) emission. The peak power associated with the SR emission was similar to 1-2 MW. The spectrum of radiation belongs to the frequency range 38-48 GHz. The experimental results are compared with theoretical analyses.