Fundamental Research on Emission Materials and Surface Physics.
Final rept. 31 Jul 67-31 Jul 70,
NOTRE DAME UNIV IND PHYSICAL ELECTRONICS GROUP
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A value of 6.9 plus or minus 0.5 eV has been measured for the work function of a 211 plane of thermally smoothed tungsten field emitter, using an improved probe-hole technique. A compensation is shown to exist between the Richardson constants for recrystallized W and Mo filaments, which may be explained by a Gaussian distribution of fundamental patches superimposed on the micropatches. Periodic deviations in the Schottky effect for Nb, Ta and Ta-on-Nb yield a Wa which is at variance with the Miller-Good theory. A more advanced many-body analysis is needed to explain the results. Author
- Electricity and Magnetism
- Solid State Physics