Studies of Photon and Electron Interactions with Communications Materials.
Abstract
This report summarizes theoretical and experimental studies designed to yield information on photon and electron interactions with various communications materials. Theoretical predictions have been made for the energy-loss spectra of low-energy electrons (400 eV to 1600 eV) transmitted through thin films of carbon and comparisions made with available experimental data on 80 films. The optical properties of polyethylene have been measured over the photon energy range from 0.5 eV to 76 eV. Optical emission spectra from the solids Ag, K, Mg, and Al bombarded by low-energy electrons (20 eV to 1.5 KeV) have been measured and theoretical models developed to explain the experimental data. Theoretical models combined with experimental data have resulted in tabulations of inverse mean free paths, stopping powers, continuous-slowing-down-approximation ranges, and straggling in the organic insulator polystyrene for electrons of energies 10 KeV. Optical guided wave techniues have been employed to measure the change in refractive index of LiF films as a function of time after deposition, and a new method has been demonstrated for direct observation of the dispersion relation of optical guided waves. Studies on modifications and extensions of classical-binary-collision cross sections are summarized. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA079054
Entities
People
- J. C. Ashley
- M. W. Williams
Organizations
- Oak Ridge National Laboratory