Experimental investigation of emission inhomogeneity of gyrotron cathodes basing on their current-voltage characteristics |
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| Authors: | M Yu Glyavin A N Kuftin N P Venediktov A S Postnikova M V Yulpatova and V E Zapevalov |
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| Institution: | (1) Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Street, 603600 Nizhny Novogorod, Russia |
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| Abstract: | A scheme for automatic measurement of current-voltage characteristic of gyroresonance devices has been developed. Efficient
emission inhomogeneity of cathode in powerful gyrotrons has been studied basing on analysis of current-voltage characteristics.
Experimental data on the parameter of efficient emission inhomogeneity for different regimes are presented, as well as the
estimate for admissible efficient inhomogeneity of the cathode for powerful gyrotrons and the dependence of electron beam
parameters on efficient inhomogeneity of the cathode. A method of complex measurements is proposed, which makes it possible
to judge about the contribution of different physical mechanisms into emission inhomogeneity of the cathode. |
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| Keywords: | gyrotron current-voltage characteristics emission inhomogeneity of cathode |
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