Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs

Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs

The excitation of the TM01 mode due to the interaction of a relativistic electron beam with guided wave in a circular waveguide loaded with alternate metal and dielectric discs is studied. The wave equation describing the excited field is solved to obtain the dispersion relation and growth rate. The...

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Main Authors: A. Ashrafi, A. Hasanbeigi, H. Mehdian
Format: Article
Language:English
Published: AIP Publishing LLC 2018-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5017747
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spelling doaj-569bd62be9ab40088b2d779d393f3d062020-11-24T21:37:56ZengAIP Publishing LLCAIP Advances2158-32262018-01-0181015322015322-810.1063/1.5017747079801ADVDispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discsA. Ashrafi0A. Hasanbeigi1H. Mehdian2Department of Physics and Institute for Plasma Research, Faculty of Physics, Kharazmi University, Tehran 15719-14911, IranDepartment of Physics and Institute for Plasma Research, Faculty of Physics, Kharazmi University, Tehran 15719-14911, IranDepartment of Physics and Institute for Plasma Research, Faculty of Physics, Kharazmi University, Tehran 15719-14911, IranThe excitation of the TM01 mode due to the interaction of a relativistic electron beam with guided wave in a circular waveguide loaded with alternate metal and dielectric discs is studied. The wave equation describing the excited field is solved to obtain the dispersion relation and growth rate. The resulted growth rate is analyzed numerically over a wide range of system parameters. It is found that the growth rate, bandwidth, and the wave number corresponding to the peak growth could be controlled by the dielectric permittivity, thickness and beam parameters.http://dx.doi.org/10.1063/1.5017747
collection DOAJ
language English
format Article
sources DOAJ
author A. Ashrafi
A. Hasanbeigi
H. Mehdian
spellingShingle A. Ashrafi
A. Hasanbeigi
H. Mehdian
Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
AIP Advances
author_facet A. Ashrafi
A. Hasanbeigi
H. Mehdian
author_sort A. Ashrafi
title Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
title_short Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
title_full Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
title_fullStr Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
title_full_unstemmed Dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
title_sort dispersion and growth characteristics in a circular waveguide loaded with alternate metal and dielectric discs
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2018-01-01
description The excitation of the TM01 mode due to the interaction of a relativistic electron beam with guided wave in a circular waveguide loaded with alternate metal and dielectric discs is studied. The wave equation describing the excited field is solved to obtain the dispersion relation and growth rate. The resulted growth rate is analyzed numerically over a wide range of system parameters. It is found that the growth rate, bandwidth, and the wave number corresponding to the peak growth could be controlled by the dielectric permittivity, thickness and beam parameters.
url http://dx.doi.org/10.1063/1.5017747
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AT ahasanbeigi dispersionandgrowthcharacteristicsinacircularwaveguideloadedwithalternatemetalanddielectricdiscs
AT hmehdian dispersionandgrowthcharacteristicsinacircularwaveguideloadedwithalternatemetalanddielectricdiscs
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