Statistics – Applications
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..608.1022d&link_type=abstract
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM- STAIF 2002. Conference on Thermophyiscs in Microgravity; Conference on In
Statistics
Applications
Thermionic Conversion, Spaceborne And Space Research Instruments, Apparatus, And Components
Scientific paper
A Nb-O single crystal alloy collector, L2, made by Lutch, with an oxygen content of 2.9 atom % was tested opposite a polycrystalline tungsten emitter. The emitter bare work function was raised to 5.40 eV, following oxygen evaporation from the collector and adsorption onto the emitter. This increase in the emitter bare work function was substantially higher that that obtained from another Lutch collector single crystal alloy, L1, which contained 1.2 atom %. The barrier index obtained with L2 was one of the lowest obtained with oxygen-dispensing collectors, 0.24 eV lower than with L1. At a spacing of 0.55 mm and an emitter temperature of 1800 K, the maximum electrode power density was 7.6 W/cm2 and the maximum electrode efficiency was 18%. After about 2000 hours of operation some tungsten condensation was detected on the collector. .
No associations
LandOfFree
Testing of a niobium-oxygen single crystal collector does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Testing of a niobium-oxygen single crystal collector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing of a niobium-oxygen single crystal collector will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1086481