Dispersion of helically corrugated waveguides : analytical, numerical and experimental study

Burt, G. and Samsonov, S.V. and Phelps, A.D.R. and Ronald, K. and Denisov, G.G. and Young, A.R. and Bratman, V.L. and Phelps, Alan and Cross, A.W. and Konoplev, I.V. and He, W. and Thomson, J. and Whyte, C.G. (2004) Dispersion of helically corrugated waveguides : analytical, numerical and experimental study. Physical Review E: Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 70 (4). 046402. ISSN 2470-0053 (https://doi.org/10.1103/PhysRevE.70.046402)

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Abstract

Helically corrugated waveguides have recently been studied for use in various applications such as interaction regions in gyrotron traveling-wave tubes and gyrotron backward-wave oscillators and as a dispersive medium for passive microwave pulse compression. The paper presents a summary of various methods that can be used for analysis of the wave dispersion of such waveguides. The results obtained from an analytical approach, simulations with the three-dimensional numerical code magic, and cold microwave measurements are analyzed and compared.