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In this paper a microwave autodyne Gunn oscillator has been presented. The oscillator may be used as a simple detector of EPR signal for irradiation-food dozynteter. The idea of EPR method of measurement of radiation dose has been described. A low-cost, simple EPR spectrometer for estimation of dose of food irradiation can be built on the basis of microwave auto+ne Gunn oscillator. The re-entrant resonator Gunn oscillator has been proposed as an attractive solution of autodyne circuit. The design expressions and the oscillator parameters have been given and the photograph oscillator elaborated has been shown.

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In this paper, a simple and fast method relied upon for designing a Vlasov launcher with a helical cut is proposed. The method is based on graphic interpretation of analytical relationships that link wave parameters (EM field mode) to the launcher’s geometrical dimensions. Using the ray tracing method, a simplified graphic analysis may be carried out. The results obtained are not significantly different from those of rigorous full-wave analyzes. The family of normalized curves that is created in the process greatly facilitates the stage of optimizing the geometrical parameters of the Vlasov launcher

Computer modeling of the semi-lumped H field-generating multi helical coil, which can be used for generation of H-type discharges at microwave frequencies is presented in this paper. The aim of modeling was to support the design of model plasma source based upon a set of realistic dimensions, which should enable excitation of maximal values of H field at the axis of the discharge tube. As a result, a Microwave-Driven Inductively Coupled Plasma cavity (MICP) has been constructed and its assembly is presented in this paper. The new cavity can be applied in the emission and mass spectroscopy but also can find another applications where maximum H-type coupling is essential.