- Scandium oxide coated polycrystalline tungsten studied using emission microscopy and photoelectron spectroscopy.
Scandium oxide coated polycrystalline tungsten studied using emission microscopy and photoelectron spectroscopy.
Ultramicroscopy (2011-11-15)
Congshang Wan, Joel M Vaughn, Jerzy T Sadowski, Martin E Kordesch
PMID22079380
RÉSUMÉ
Thermionic electron emission from 200 to 500 nm thick coatings of scandium oxide on tungsten foil have been examined in thermionic emission microscopy, spectroscopic photoelectron microcopy, synchrotron radiation and ultraviolet photoelectron spectroscopy (UPS). A clear dependence of the scandium oxide-W electron yield on the grain orientation of the polycrystalline tungsten is observed in thermionic emission and photoelectron emission.
MATÉRIAUX
Référence du produit
Marque
Description du produit
Tungsten, foil, 200x200mm, thickness 0.3mm, as rolled, 99.95%
Tungsten, foil, light tested, 150x150mm, thickness 0.025mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.5mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.2mm, as rolled, 99.95%
Tungsten, foil, not light tested, 25x25mm, thickness 0.003mm, 99.95%
Tungsten, foil, light tested, 25x25mm, thickness 0.02mm, 99.95%
Tungsten, foil, 1m coil, thickness 0.025mm, coil width 1mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.2mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.1mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 0.5m coil, thickness 0.035mm, coil width .5mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.95%
Tungsten, foil, light tested, 25x25mm, thickness 0.01mm, 99.95%
Tungsten, foil, light tested, 25x25mm, thickness 0.025mm, as rolled, 99.95%
Tungsten, foil, not light tested, 25x25mm, thickness 0.005mm, 99.95%
Tungsten, foil, 150x150mm, thickness 0.15mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 0.125mm, as rolled, 99.95%
Tungsten, foil, 50x50mm, thickness 3.0mm, as rolled, 99.95%
Tungsten, foil, 10mm disks, thickness 1.0mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 0.5mm, as rolled, 99.95%
Tungsten, foil, 100x100mm, thickness 2.0mm, as rolled, 99.95%
Tungsten, foil, 150x150mm, thickness 1.0mm, as rolled, 99.95%
Tungsten, foil, 1m coil, thickness 0.05mm, coil width 1.5mm, as rolled, 99.95%
Tungsten, foil, light tested, 150x300mm, thickness 0.025mm, as rolled, 99.95%
Tungsten, foil, light tested, 25x25mm, thickness 0.0125mm, 99.95%
Tungsten, foil, not light tested, 100x100mm, thickness 0.01mm, 99.95%
Tungsten, foil, not light tested, 25x25mm, thickness 0.008mm, 99.95%