Accession Number:

AD0723855

Title:

Fundamental Research on Emission Materials and Surface Physics.

Descriptive Note:

Final rept. 31 Jul 67-31 Jul 70,

Corporate Author:

NOTRE DAME UNIV IND PHYSICAL ELECTRONICS GROUP

Personal Author(s):

Report Date:

1971-03-10

Pagination or Media Count:

74.0

Abstract:

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

Subject Categories:

  • Electricity and Magnetism
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE