Accession Number : AD0909125

Title :   Physics of Electron-Photon Interaction.

Descriptive Note : Final rept. 1 Oct 68-31 Mar 72,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Peria,W. T.

Report Date : JAN 1973

Pagination or Media Count : 112

Abstract : A continuation of the experiment examining the sticking probability of energetic alkali ions on Ge is described. Results are given for the Ge(100)-Cs system in the zero coverage region. Experimental difficulties which forced discontinuation of the study are discussed. A study of the Ge(100)-Cs-O photosurface is described with particular emphasis on the structural changes associated with cathode formation. A stable negative electron affinity Si(100)-Cs-O photocathode was obtained and the optimum amount of Cs determined to be 1.3 monolayer. A work function value of approximately 0.6 eV was measured. Experimental results of an electron scattering experiment on Ge(100) are summarized. A full report is forthcoming. Auger spectra obtained from vacuum-cleaved alkali halide crystals are presented and some of the difficulties encountered are summarized. Preliminary evaluation of the use of Auger spectroscopy for the analysis of aqueous solutions is described. A description of a system for studying complex photocathodes is given. (Author)

Descriptors :   (*PHOTOELECTRIC EFFECT, ALKALI METALS), (*ELECTRONS, *PHOTONS), INTERACTIONS, SEMICONDUCTORS, GERMANIUM, SILICON, SURFACE PROPERTIES, IONS, ADHESION, SUBSTRATES, WORK FUNCTIONS, CESIUM, SCATTERING, PHOTOCATHODES, HALIDES, CRYSTALS, ELECTROPLATING, VAPORS, DEPOSITION

Subject Categories : Electricity and Magnetism
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE