Effect of the spatial dispersion on the propagation of electromagnetic waves in a magnetoplasma in the upper-hybrid frequency range

Summary form only given. The laboratory experiments aimed at studying the process of radiation transfer along resonance lines in magnetized plasma in the "upper-hybrid" frequency range. The theoretical analysis showed that the most significant factor that blurs the angular resonance (in the given parameter range) is the weak spatial dispersion, which results in a deformation of the resonance cone. Depending on the parameter ratio the resonance cone transforms either into an open surface of wave vectors with a curve inflection, or into a toroidal surface. In the first case a small-size source radiates mainly in the directions perpendicular to the surface of wave vectors at inflection points (where the Gaussian curvature becomes zero). In the second case (toroidal surface) the mode of internal cone refraction is radiation: a whole cone of wave vectors corresponds to one direction of the group velocity (along the magnetic field).