Cherenkov radiation by an electron bunch that moves in a vacuum above a left-handed material

Journal Article · Tue Nov 15 04:00:00 EST 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.72.205110· OSTI ID:20719837

Averkov, Yu O; Yakovenko, V M ^[1]

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1. A.Ya. Usikov Institute for Radiophysics and Electronics of NAS of Ukraine 12, Acad. Proskura str., Kharkov 61085 (Ukraine)

Cherenkov radiation by a nonrelativistic electron bunch that moves above an interface of a vacuum-left-handed material has been investigated theoretically. The electron density of the bunch is described by a Gauss distribution. Cherenkov radiation for the frequency range where the refractive index is negative is shown to lead to simultaneous excitation of both bulk and surface electromagnetic waves over one and the same frequency range. In this case the wave vector magnitude in the plane of the interface of surface electromagnetic waves is larger than the corresponding wave vector magnitude of bulk electromagnetic waves. The energy flows in a left-handed material have been calculated. The spectral density and the radiation pattern have been investigated.

• OSTI ID: 20719837
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 20 Vol. 72; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAM BUNCHING
CHERENKOV RADIATION
ELECTRON DENSITY
ELECTRONS
EXCITATION
FREQUENCY DEPENDENCE
GAUSS FUNCTION
INTERFACES
REFRACTIVE INDEX
SPECTRAL DENSITY
SURFACES
VECTORS