@inproceedings{451b8995eb9d4bf19bb490547640f5ab,
title = "Microwave devices with helically corrugated waveguides",
abstract = "Helical corrugation of the inner surface of an oversized circular waveguide provides very flexible dispersion characteristic of an eigenwave. Under certain corrugation parameters, the eigenwave can possess a sufficiently high and almost constant group velocity over a wide frequency band in the region of close-to-zero axial wavenumber. This makes it attractive for broadband gyro-TWTs and gyro-BWOs with reduced sensitivity to electron velocity spread. Another set of parameters ensures an operating wave with a strong frequency dependant group velocity over a frequency band, which is sufficiently separated from any cutoffs. Such wave dispersion is favourable for frequency-chirped pulse compression at very high power levels. An overview of experiments on the helical-waveguide gyro-devices and the pulse compressor is presented. ",
keywords = "gyrotron-type devices, gyro-TWT, gyro-BWO, waveguide with helical corrugation, microwave pulse compression ",
author = "V.L. Bratman and Adrian Cross and G.G. Denisov and Alan Phelps and S.V. Samsonov",
year = "2005",
doi = "10.1007/1-4020-3638-8_09",
language = "English",
isbn = "9781402036361",
series = "NATO science series, series II: mathematics, physics and chemistry",
publisher = "Springer",
pages = "105--114",
editor = "JL Hirshfield and Petelin, {MI }",
booktitle = "Quasi-optical control of intense microwave transmission",
note = "NATO Advanced Research Workshop on Quasi-Optical Control of Intense Microwave Transmission ; Conference date: 14-02-2004 Through 17-02-2004",
}