28 August 2022 to 1 September 2022
Serbian Academy of Sciences and Arts – SASA
Europe/Belgrade timezone

Cathodes with increased thermoelectronic emission properties

S08-PGDP-205
29 Aug 2022, 18:00
1h 30m
Restaurant (Serbian Academy of Sciences and Arts - SASA)

Restaurant

Serbian Academy of Sciences and Arts - SASA

Board: S08-PGDP-205
Poster presentation S08 Plasma and Gas-Discharge Physics Poster session

Speaker

Pavel Topala (Alecu Russo Balti State University)

Description

The phenomena of electronic emission, in general, and thermoelectronic emission, in particular, seems that have already been studied well enough and there is nothing left to do. The electron beam, as a tool in the processing of materials is very convenient, because it does not cause changes in chemical composition and ensures processing in micrometric and nanometric scales.

It is experimentally demonstrated in this paper that the intensity of thermoelectronic emission current can be increased up to 10 times by micrometric changes in the geometry of the cathode active surface. It was also found that the artificially created asperities on the active surfaces of the cathodes also serve as concentrators of the electric fields. At the same time, the extraction of nanometric asperities from the micrometric ones further increases the active area of the thermoelectronic emission surface, and as a result the efficiency of the process.

Primary authors

Dorin Guzgan (Alecu Russo Balti State University) Pavel Topala (Alecu Russo Balti State University) Alexandr Ojegov (Alecu Russo Balti State University)

Presentation materials

There are no materials yet.