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The corrected dispersion relation governing the linear interaction of a TE mode in a circular cylindrical wave guide with an annular beam of gyrating electrons in a gyro-TWT configuration is derived. When the cyclotron resonance condition is satisfied by the TE mode for a positive s-number, the small-signal theory is shown to give rise to an initial exponential growth of the mode with axial distance...
A group of complex perovskites, Ba2−xSrxEuSbO6 (where x=0, 1 and 2) was synthesized and sintered as single-phase materials for their use as substrates for YBCO superconductor films. These compounds have a complex cubic perovskite (A2BB′O6) crystal structure with lattice constant in the range 0.85–0.83 nm. The values of dielectric constant and loss factor of Ba2−xSrxEuSbO6 compounds are in the range...
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