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A model for low work function compound deposition on hollow cathode insert surface

Coletti, Michele and Gabriel, Stephen B. (2007) A model for low work function compound deposition on hollow cathode insert surface In Proceedings of the 46th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics. 15 pp, pp. 1-15.

Record type: Conference or Workshop Item (Paper)

Abstract

The chemistry of the low work function compounds on tungsten emitter surface has been presented qualitatively giving a possible explanation of the 4:1:1 ratio commonly used. The processes involved in BaO deposition and desorption have been described and quantified as well as possible given the chemical data present in the literature producing a simple model for deposition and desorption. The model has then been tested with the ELT NSTAR cathode. The results obtained from the model have been found to be very conservative as expected and a possible explanation has been given stressing the need of a coupled deposition-desorption-plasma model.

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More information

Published date: 24 December 2007
Venue - Dates: 46th AIAA Aerospace Sciences Meeting and Exhibit, 2008-01-07 - 2008-01-10
Organisations: Astronautics Group

Identifiers

Local EPrints ID: 52081
URI: http://eprints.soton.ac.uk/id/eprint/52081
PURE UUID: 532fdbc8-0f55-4f1b-b766-ca3d22a38526

Catalogue record

Date deposited: 19 Jun 2008
Last modified: 17 Jul 2017 14:45

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Contributors

Author: Michele Coletti
Author: Stephen B. Gabriel

University divisions

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