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.

Download

[img] PDF ColettiReno.pdf - Other
Restricted to Registered users only

Download (487kB)

Description/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.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: 46th AIAA Aerospace Sciences Meeting and Exhibit, 2008-01-07 - 2008-01-10
Related URLs:
Subjects: T Technology > TP Chemical technology
Q Science > QD Chemistry
Organisations: Astronautics Group
ePrint ID: 52081
Date :
Date Event
24 December 2007Published
Date Deposited: 19 Jun 2008
Last Modified: 16 Apr 2017 18:01
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/52081

Actions (login required)

View Item View Item