Doctoral Dissertations

Abstract

"The optical properties of low-carbon shim steel, aluminum foil, and Teflon FEP have been measured in the 20 cm-1 to 70 cm-1 range. In particular, measurements of surface impedance for aluminum and low-carbon steel were used to calculate the imaginary part of the dielectric constant (&m, 2). The resulting values of &m, 2 were of order 106 for aluminum, and 105 for steel. The imaginary part of the dielectric constant for metals is several times greater in magnitude than the real part in the frequency range of this experiment. Calculations of &m, 2 obtained by a different method (Drude model prediction based on the value of d.c. resistivity) yielded results that were within 50% of the measured values of &m, 2. In addition to the observed magnitude of &m, 2, the Drude model frequency dependence for &m, 2 was observed. The slope of the data shows that &m, 2 is inversely proportional to frequency. This is the behavior predicted by Drude's model.

Measurements of intensity-absorption per unit length for Teflon FEP are shown. These are the first values reported for this material in this frequency range.

Optical measurements were also made on samples of evaporated iron. The results were anomalous. This is attributed to discontinuities in the metal"-- Abstract, p. ii

Advisor(s)

Alexander, Ralph William, Jr.

Committee Member(s)

Peacher, Jerry
Bell, Robert John, 1934-
Hale, Barbara N., 1938-2024
Illegible Signature

Department(s)

Physics

Degree Name

Ph. D. in Physics

Publisher

University of Missouri--Rolla

Publication Date

Spring 1985

Pagination

vi, 157 pages

Note about bibliography

Includes bibliographical references (pages 133-134)

Rights

© 1985 Raymond E. Paul, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Thesis Number

T 5208

Print OCLC #

13141272

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