ISSN:
1432-0630
Keywords:
73.30
;
79.40
;
85.10
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The work function reduction at a metal surface caused by adsorbed barium and oxygen is already known with the resulting expression for the overall work function being ϕ=ϕS−δϕR. Results from the Re/W alloy-coated cathodes exhibit that δϕR increases with substrate work function with a slope of 1.09 by linear regression. A qualitative explanation of the above results comes from considering the arrangement of barium and oxygen on the surfaces. A charge transfer model is proposed for two-dimensional barium and oxygen lying on a flat non-interacting substrate. Calculation shows that the dipole strength increases with the charge transfer below the intermediate states.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00323454
