TEMPERATURE DEPENDENCE OF THE INFRARED SPECTRA OF SELECTED DIELECTRICS II.
Final rept. Jan-Nov 65,
LITTLE (ARTHUR D) INC CAMBRIDGE MASS
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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
- Atomic and Molecular Physics and Spectroscopy
- Solid State Physics