Ionization on Tungsten Single‐Crystal Surfaces

1963 ◽  
Vol 39 (4) ◽  
pp. 1107-1114 ◽  
Author(s):  
F. L. Reynolds
Keyword(s):  
Single Crystal ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Tungsten Single Crystal

Work function of stepped tungsten single crystal surfaces

1977 ◽  
Vol 64 (1) ◽  
pp. 52-68 ◽  
Author(s):  
B Krahl-Urban ◽  
E.A Niekisch ◽  
H Wagner
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Tungsten Single Crystal

CO adsorption on (100) and (211) tungsten single-crystal surfaces: Changes in work function

1968 ◽  
Vol 46 (8) ◽  
pp. 949-958 ◽  
Author(s):  
R. A. Armstrong
Keyword(s):  
Single Crystal ◽  
Work Function ◽  
Single Crystals ◽  
Room Temperature ◽  
Co Adsorption ◽  
Major Effect ◽  
Crystal Surfaces ◽  
Single Crystal Surfaces ◽  
Tungsten Single Crystal ◽  
Adsorption Of Co

The adsorption of CO on two large single crystals of tungsten exposing (100) and (211) surfaces has been studied by measuring changes in the work function [Formula: see text] at 300 °K and above, where some CO remained adsorbed. The results for the two surfaces were quite different.CO adsorbed on the clean W(100) surface at room temperature as β-CO causing [Formula: see text] to increase by 0.48 V. As β adsorption saturated, α-CO adsorption began and caused [Formula: see text] to decrease. The major effect of heating was desorption.CO adsorbed on the clean W(211) surface with a sticking probability near unity and increased [Formula: see text] by 0.68 V. Heating the crystal to temperatures below 1100 °K produced large irreversible changes in [Formula: see text]. These irreversible changes are attributed to the formation and dissociation on the surface of complexes consisting of two CO molecules.

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