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Telecommunications and Radio Engineering
SJR: 0.203 SNIP: 0.44 CiteScore™: 1

ISSN Print: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v66.i16.60
pages 1489-1500

Processes upon the Surface of Details of Millimeter-Wave Band Magnetrons with Secondary Emission Platinum Cathode

S. V. Grytsayenko
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Krasnoznamennaya St., Kharkov 61002, Ukraine
V. D. Naumenko
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4 Mystetstv St., Kharkiv 61002, Ukraine
O. M. Suvorov
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Krasnoznamennaya Str., Kharkiv 61002, Ukraine

ABSTRACT

A study of anode and secondary emission cathode surface of three-millimeter and eight-millimeter magnetrons was performed using the scanning electron microscope and the electron probe X-ray microanalysis after long life tests. Heterogeneous distribution of surface erosion and altering of surface composition were discovered. Possible mechanisms causing the discovered changes are described. The obtained results are important for solving of the essential problem of increasing of reliability and repeatability level of the devices applied at the most advanced microwave systems.


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