Quenching thermal instability in the body of a thermionic arc cathode

Almeida, P. G. C.; Benilov, M. S.; Cunha, M. D.; Gomes, J. G. L.

http://hdl.handle.net/10400.13/4545

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Abstract(s)

The possibility of quenching the instability causing the appearance of spots on thermionic cathodes of high-pressure arc discharges is demonstrated by means of numerical simulations and experimentally. This possibility stems from the fact that the instability is of a thermal nature and therefore slow. While of significant interest by itself, this possibility may be exploited to prevent in real time the formation of cathode spots in arc devices.

Keywords

Thermionic arc cathode Quenching thermal instability . Faculdade de Ciências Exatas e da Engenharia

URI

http://hdl.handle.net/10400.13/4545

Citation

Almeida, P. G. C., Benilov, M. S., Cunha, M. D., & Gomes, J. G. L. (2013). Quenching thermal instability in the body of a thermionic arc cathode. Plasma Sources Science and Technology, 22(1), 012002. DOI: 10.1088/0963-0252/22/1/012002