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The formation of a resistive emission layer in channels of microchannel plates occurs at the stage of thermochemical treatment in dilute acid and alkaline solutions. By varying the processing modes, it is possible to adjust the parameters of the finished device to a greater or lesser extent. In this work, in order to solve the problem of forming optimal electron-optical parameters of microchannel plates the change in the resistive characteristics of lead silicate glasses after treatment in chemical solutions are investigated. Using developed installations the electrical conductivity of a single channel, workpieces and the device as a whole was measured. It is shown that the operating electrical resistance of the microchannel plate due to self-heating is somewhat less than the true one. At temperatures higher than 200 °C, the resistance of the microchannel plate changes by several digits due to ionic conductivity. In addition to integral parameters measurement, one channel resistance was measured, its average value is 1•1014 Ohm. It has been established that the chemical treatment of structural glasses affects the high-temperature ionic conductivity but activation energy of electrical conductivity remains constant. The latter in its turn indicates the immutability of the conduction mechanism and the type of charge carriers. It is noted that the treatment of glasses in NaOH and HF solutions can significantly change their electrical resistance.
Oleg G. Ashkhotov
Kabardino-Balkarian State University named after H. M. Berbekov, Russia, 360004, Kabardino-Balkarian Republic, Nalchik, Chernyshevsky st., 173
Irina B. Ashkhotova
Kabardino-Balkarian State University named after H. M. Berbekov, Russia, 360004, Kabardino-Balkarian Republic, Nalchik, Chernyshevsky st., 173
Tamerlan T. Magkoev
North Ossetian State University named after K. L. Khetagurov, Russia, 362025, Republic of North Ossetia – Alania, Vladikavkaz, Vatutin st., 44-46

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