High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide
Bratman, V L and Cross, A W and Denisov, G G and He, W and Phelps, A D R and Ronald, K and Samsonov, S V and Whyte, C G and Young, A R (2000) High-gain wide-band gyrotron traveling wave amplifier with a helically corrugated waveguide. Physical Review Letters, 84 (12). pp. 2746-2749. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.84.2746)
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First bandwidth measurements of a novel gyrotron amplifier are presented. The coupling between the second harmonic cyclotron mode of a gyrating electron beam and the radiation field occurred in the region of near infinite phase velocity over a broad bandwidth by using a cylindrical waveguide with a helical corrugation on its internal surface. With a beam energy of 185 keV, the amplifier achieved a a maximum output power of 1.1 MW, saturated gain of 37 dB, linear gain of 37 dB, saturated bandwidth of 8.4 to 10.4 GHz (21% relative bandwidth), and an efficiency of 29%, in good agreement with theory.
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Bratman, V L, Cross, A W
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Item type: Article ID code: 35598 Dates: DateEvent20 March 2000PublishedSubjects: Science > Physics > Plasma physics. Ionized gases Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 07 Nov 2011 13:34 Last modified: 14 Feb 2025 03:49 URI: https://strathprints.strath.ac.uk/id/eprint/35598