Output details
13 - Electrical and Electronic Engineering, Metallurgy and Materials
University of Southampton
Article title
A model for barium oxide depletion from hollow cathode inserts
Type
D - Journal article
Title of journal
IEEE Transaction on Plasma Science
Article number
-
Volume number
37
Issue number
1
First page of article
58
ISSN of journal
0093-3813
Year of publication
2009
Number of additional authors
1
Additional information
Significance of output:
This paper describes a novel model of barium oxide depletion from the low work function inserts in hollow cathodes which, for the first time, includes the complex chemistry involved and the BaO diffusion. Since cathode lifetime is a key issue in high impulse missions for both gridded ion engines (GIEs) and Hall Effect thrusters, the significance of the approach is that it eliminates previous overestimates of BaO evaporation rates and thereby provides more reliable data. The success of the approach is evidenced by its adoption by QinetiQ for cathode lifetime predictions used on the ESA Bepi Colombo mission.
Interdisciplinary
-
Cross-referral requested
-
Research group
None
Proposed double-weighted
No
Double-weighted statement
-
Reserve for a double-weighted output
No
Non-English
No
English abstract
-
