PERFORMANCE INVESTIGATION FOR NANOCARBON MODIFIED DISPENSER CATHODE
https://doi.org/10.32603/1993-8985-2018-21-4-57-63
Abstract
The article provides characteristics of dispenser cathodes with admixture of nanocarbon particles, i.e. sulfoadduct of carbon nanoclusters (Ugleron®), into active material and polyhedral multilayer carbon nanostructures of the fulleroid type and toroidal shape (Astralenes®) into tungsten matrix. The emitters are considered as electron sources for modern microwave devices, in particular travelling wave tube. The results of their accelerated life tests. Emission capacity measurement results are provided. A comparative x-ray analysis of modified and typical cathode emitting surfaces and respective anodes is presented. The morphology features of DC metal matrix with admixture of carbon nanoparticles are mentioned. Moreover, resistance of nanocarbon modified cathodes to operation under insufficient vacuum conditions is investigated.It is concluded that the further study of nanocarbon modi-fied thermal cathode parameters, e.g. electron work function and active substance evaporation rate with Ugleron®, is reasonable. Recommendations on further improvement of dispenser cathodes manufacturing technology with admixture of nanocarbonic particles.
About the Authors
T. M. Krachkovskaya
JSC RPE "Almaz"
Russian Federation
Russian Federation
Tatyana M. Krachkovskaya – Master’s Degree in Instrumentation in Gagarin Saratov State Technical University (2011). Postgraduate student and Chief of Section at SC "RPE "Almaz". The author of more than 21 scientific publications. Area of expertise: cathode technique.
1, Panfilova str., 410033, Saratov
A. V. Storublev
JSC RPE "Almaz"
Russian Federation
Russian Federation
Anton V. Storublev – Master’s Degree in Medical Physics in Chernyshevsky Saratov State National Research University. Postgraduate student and Chief of Section at SC "RPE "Almaz". The author of 5 scientific publications. Area of expertise: cathode technique, TWT, vacuum electronics.
1, Panfilova str., 410033, Saratov.
G. V. Sakhadji
JSC RPE "Almaz"
Russian Federation
Russian Federation
Georgy V. Sakhadji – Ph.D. in Engineering (2013), Chief of Research and Production Complex at SC "RPE "Almaz". The author of more than 32 scientific publications. Area of expertise: cathode technique.
1, Panfilova str., 410033, Saratov.
A. N. Emelyanov
JSC RPE "Almaz"
Russian Federation
Russian Federation
Andrey S. Emelyanov – Bachelor’s Degree in Electronics and Nanoelectronics in Gagarin Saratov State Technical University (2016). Graduate student and engineer at SC "RPE "Almaz". The author of 3 scientific publications. Area of expertise: cathode technique.
1, Panfilova str., 410033, Saratov.
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Review
For citations:
Krachkovskaya T.M., Storublev A.V., Sakhadji G.V., Emelyanov A.N. PERFORMANCE INVESTIGATION FOR NANOCARBON MODIFIED DISPENSER CATHODE. Journal of the Russian Universities. Radioelectronics. 2018;(4):57-63. (In Russ.) https://doi.org/10.32603/1993-8985-2018-21-4-57-63
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