TEMPERATURE DEPENDENCE OF THE INFRARED SPECTRA OF SELECTED DIELECTRICS II.

Abstract

The damping constant as a function of temperature was compared with theoretical equation and showed agreement at high temperature but deviated from the equation at low temperature. A dispersion analysis for LiF and MgO was performed. The calculations show that in order to have a satisfactory fit between the experimental and calculated value of reflectivity one must assume that the high frequency dielectric constant is a function of temperature. The infrared spectra of alpha-quartz was measured as a function of temperature with polarized light. It was observed that the infrared bands shift to longer wave length as the lattice expands. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1965
Accession Number
AD0628793

Entities

People

  • O. M. Clark

Organizations

  • Arthur D. Little

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Agreements
  • Dielectric Permittivity
  • Dielectrics
  • Diffraction
  • Dispersions
  • Electromagnetic Spectra
  • Equations
  • Frequency
  • High Temperature
  • Infrared Spectra
  • Low Temperature
  • Reflectivity
  • Spectra
  • Wave Phenomena

Readers

  • Control Systems Engineering.
  • Materials Science and Engineering.
  • Mathematics or Statistics