Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2023. №4
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Full text in Russian (pdf)

DOI: https://doi.org/10.30898/1684-1719.2023.4.6

FEATURES OF EMISSION AND FIELD ELECTRON SPECTROSCOPY

OF OXIDE THERMOCATHODE

V.M. Lobanov, E.P. Sheshin, N.N. Chadaev, S.V. Lobanov

Moscow Institute of Physics and Technology (National Research University)

141700, Russia, Dolgoprudny, Institutskiy per., 5

The paper was received March 13, 2023.

Abstract. The results of a study of the emission characteristics and gas release of oxide thermocathode by the method of time diagrams in the temperature range of 678÷885 °C and emission currents from 0.08 to 1.3 mA are presented, a directly proportional dependence of the partial pressures of the released gases CO and CO₂ on the cathode emission current is established. The energy spectra of the emitted electrons of oxide thermocathode at a temperature of ~600 °C were measured, corresponding to the "spotted cathode" model. The dynamics of changes in the energy spectrum of the emitted electrons of the “spotted cathode” is presented, showing the existence of stages of activation, growth and deactivation of the emission of “spots” with an increase in the emission voltage.

Key words: field emission, thermal emission, autocathode, oxide hot cathode, electron spectroscopy, electronic structure.

Corresponding author: Lobanov Vyacheslav Mikhailovich, lobanov.vm@mipt.ru

References

1. Lobanov S.V., Sheshin E.P. Carbonate-based field emission cathode. Materials today: Proceedings. 2018. Т.5. №12. С.26140-26145. https://doi.org/10.1016/j.matpr.2018.08.044

2. Sheshin E.P., Lobanov V.M., Chadaev N.N., Lobanov S.V. Polevaya ehlektronnaya spek-troskopiya oksidnykh katodov. Zhurnal radioelektroniki [Journal of Radio Electronics] [online]. 2022. №4. https://doi.org/10.30898/1684-1719.2022.4.3 (In Russian)

For citation:

Lobanov V.M., Sheshin E.P., Chadaev N.N., Lobanov S.V. Features of emission and field electron spectroscopy of oxide thermocathode. Zhurnal radioelektroniki [Journal of Radio Electronics] [online]. 2023. №4. https://doi.org/10.30898/1684-1719.2023.4.6 (In Russian)