Optical Diffraction Radiation of a Beam of Particles Flowing Near a Circular Silver Nanowire

The optical diffraction radiation that accompanies the motion of a modulated beam of electrons near a silver nanowire scatterer is investigated in the two-dimensional formulation. Our goal is to compute the field in the near and far zones and analyze how it depends on electron beam parameters. We demonstrate the excitation of plasmon resonances of such a nanoscale scatterer that can be used in the design of optical range non-invasive beam position monitors.