Accession Number : AD0652223

Title :   ELECTRON REFLECTION COEFFICIENT AT ZERO ENERGY I: EXPERIMENTS,

Corporate Author : HUGHES RESEARCH LABS MALIBU CALIF

Personal Author(s) : Heil,H. ; Hollweg,J. V.

Report Date : MAR 1967

Pagination or Media Count : 26

Abstract : The zero energy reflection coefficient of electrons at a freshly evaporated silver surface has been measured to be 7% + or 1%. The coefficient rises linearly with 39% e/V over more than 0.5 eV. Particular care is taken that only those electrons which have actually interacted with the surface are counted; those which have been reflected by the applied field without interaction with the surface are not counted. This is accomplished by (1) use of a total energy spectrometer and (2) simultaneous recording of the energy spectrum and target current. Therefore, the reflection coefficient determined is essentially that for orthogonal incidence. This report is intended as a critical discussion of the experimental method; the measured coefficient is thought to be caused by reflection in the patches, and agrees with the value to be reported in a subsequent paper. (Author)

Descriptors :   (*SURFACE PROPERTIES, ELECTRON BEAMS), (*ELECTRON BEAMS, REFLECTION), SURFACE TARGETS, ELECTRON IRRADIATION, ELECTRON OPTICS, REFLECTIVITY, CRYSTAL STRUCTURE, SPECTROMETERS

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE