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Title: Wakefield generation in metamaterial-loaded waveguides.

Abstract

Metamaterials (MTMs) are artificial structures made of periodic elements and are designed to obtain specific electromagnetic properties. As long as the periodicity and the size of the elements are much smaller than the wavelength of interest, an artificial structure can be assigned a permittivity and permeability, just like natural materials. Metamaterials can be customized to have the permittivity and permeability desired for a particular application. When the permittivity and permeability are made simultaneously negative in some frequency range, the metamaterial is called double-negative or left-handed and has some unusual properties. For example, Cherenkov radiation (CR) in a left-handed metamaterial is backward; radiated energy propagates in the opposite direction to particle velocity. This property can be used to improve the design of particle detectors. Waveguides loaded with metamaterials are of interest because the metamaterials can change the dispersion relation of the waveguide significantly. Slow backward waves, for example, can be produced in a MTM-loaded waveguide without corrugations. In this paper we present theoretical studies of waveguides loaded with an anisotropic and dispersive medium (metamaterial). The dispersion relation of a MTM-loaded waveguide has several interesting frequency bands which are described. We present a universal method to simulate wakefield (CR) generation in amore » waveguide loaded with a dispersive and anisotropic medium. This method allows simulation of different waveguide cross sections, any transverse beam distribution, and any physical dispersion, of the medium. The method is benchmarked against simple cases, which can be theoretically calculated. Results show excellent agreement.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
958534
Report Number(s):
ANL-HEP-PR-07-35
Journal ID: ISSN 0021-8979; JAPIAU; TRN: US1000158
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
J. Appl. Phys.
Additional Journal Information:
Journal Volume: 102; Journal Issue: 2007; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; SYNTHETIC MATERIALS; CHERENKOV RADIATION; CROSS SECTIONS; DISPERSION RELATIONS; PERIODICITY; PERMEABILITY; PERMITTIVITY; WAVEGUIDES; SIMULATION

Citation Formats

Power, J G, Gai, W, Liu, W, Antipov, S, Spentzouris, L, High Energy Physics, and IIT,. Wakefield generation in metamaterial-loaded waveguides.. United States: N. p., 2007. Web.
Power, J G, Gai, W, Liu, W, Antipov, S, Spentzouris, L, High Energy Physics, & IIT,. Wakefield generation in metamaterial-loaded waveguides.. United States.
Power, J G, Gai, W, Liu, W, Antipov, S, Spentzouris, L, High Energy Physics, and IIT,. Mon . "Wakefield generation in metamaterial-loaded waveguides.". United States.
@article{osti_958534,
title = {Wakefield generation in metamaterial-loaded waveguides.},
author = {Power, J G and Gai, W and Liu, W and Antipov, S and Spentzouris, L and High Energy Physics and IIT,},
abstractNote = {Metamaterials (MTMs) are artificial structures made of periodic elements and are designed to obtain specific electromagnetic properties. As long as the periodicity and the size of the elements are much smaller than the wavelength of interest, an artificial structure can be assigned a permittivity and permeability, just like natural materials. Metamaterials can be customized to have the permittivity and permeability desired for a particular application. When the permittivity and permeability are made simultaneously negative in some frequency range, the metamaterial is called double-negative or left-handed and has some unusual properties. For example, Cherenkov radiation (CR) in a left-handed metamaterial is backward; radiated energy propagates in the opposite direction to particle velocity. This property can be used to improve the design of particle detectors. Waveguides loaded with metamaterials are of interest because the metamaterials can change the dispersion relation of the waveguide significantly. Slow backward waves, for example, can be produced in a MTM-loaded waveguide without corrugations. In this paper we present theoretical studies of waveguides loaded with an anisotropic and dispersive medium (metamaterial). The dispersion relation of a MTM-loaded waveguide has several interesting frequency bands which are described. We present a universal method to simulate wakefield (CR) generation in a waveguide loaded with a dispersive and anisotropic medium. This method allows simulation of different waveguide cross sections, any transverse beam distribution, and any physical dispersion, of the medium. The method is benchmarked against simple cases, which can be theoretically calculated. Results show excellent agreement.},
doi = {},
url = {https://www.osti.gov/biblio/958534}, journal = {J. Appl. Phys.},
issn = {0021-8979},
number = 2007,
volume = 102,
place = {United States},
year = {2007},
month = {1}
}