Scattering of electromagnetic radiation by apertures. 11. The open cylindrical tube of finite length: Axial electric field, interior and exterior surface charge density and exterior surface current distribution

Using linearly polarized plane electromagnetic radiation we irradiated finite length, conducting, circular cylinders at normal broadside incidence. These tubes were thin walled, open at both ends and empty. Measurements of the radial electric field component at the axis were made and the results are discussed. For tube dimensions comparable to the wavelength of the incident radiation measurements were also made of the internal and external charge densities and the exterior surface current distributions. Comparison with available theory is discussed.