Radiation laws in the vicinity of metallic boundaries |
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Authors: | W Eckhardt |
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Institution: | (1) Abteilung für Mathematische Physik, Universität Ulm, Oberer Eselsberg, D-7900 Ulm/Donau, Federal Republic of Germany |
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Abstract: | Corrections to Planck's radiation law and to the Stefan Boltzmann law in the vicinity of a dissipative halfspacez<0 are studied. The dissipation is described by a frequency independent conductivity . The halfspacez 0 is empty.For a perfectly reflecting wall ( = ) the proximity corrections of the thermal electric and magnetic energy mutually cancel out. Therefore the space-dependent corrections are only due to the finite conductivity of the wall.The dissipative properties of the system lead to divergencies in the limitz 0. In the limitz![rarr](/content/n167u6wjpm4hx55l/xxlarge8594.gif) all corrections vanish. In properly scaledz>0 ranges analytical expressions for the corrections to the radiation laws are calculated.As a by-product the density of states of surface polaritons in the passive medium (z>0) are derived. |
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