Pregled bibliografske jedinice broj: 904869
Image potential in lossy dielectrics
Image potential in lossy dielectrics // European Physical Journal Plus, 132 (2017), 11; 464, 15 doi:10.1140/epjp/i2017-11734-y (međunarodna recenzija, članak, znanstveni)
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Naslov
Image potential in lossy dielectrics
Autori
Lenac, Zdravko
Izvornik
European Physical Journal Plus (2190-5444) 132
(2017), 11;
464, 15
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
image potential ; lossy dielectrics
Sažetak
The interaction of a point charge with surrounding media (the image potential) is analyzed using the quantum-mechanical description of dielectrics that takes losses in media consistently into account. We have derived a real dielectric function (without an imaginary part) appropriate for lossy dielectrics which, compared to the lossless one, significantly changes the image potential in the standard (first-order) calculations. However, when one adds to the Hamiltonian all higher-order terms caused by the losses, one finds that the image potential remains the same, as if there were no losses in media. Our calculations are approximative when analyzing complicated systems with various lossy dielectrics, but in some simple and essential cases (e.g. a dielectric plate) we are able to give the exact proof.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
