Transmission of Electromagnetic Waves through a Conducting Slab. IV. A Simple Multiple-Reflection Method

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Abstract
We present a new method for calculating the electric field in the interior of a slab of finite thickness when the electrons suffer diffuse reflection at each surface. The method is a generalization of the multiple-internal-reflection scheme which may be familiar in the corresponding optical problem. As such, it requires knowledge only of the conductivity and of the field in the corresponding slab of infinite thickness. Its use makes clear the role that the emergent surface of the slab plays in sharpening the peak in transmitted intensity at cyclotron resonance in a normal magnetic field.