Microwave dielectric response of nonspherical particles by modulation techniques.
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Authors
Fritz, Gerald Wayne.
Subjects
zinc oxide
dielectric properties
dielectric relaxation
dielectric modulation
fourlings
microwave properties
aerosols
particulates
particulate suspensions
relaxation
electric field modulation
orientation modulation
polarization saturation
saturation
dielectric properties
dielectric relaxation
dielectric modulation
fourlings
microwave properties
aerosols
particulates
particulate suspensions
relaxation
electric field modulation
orientation modulation
polarization saturation
saturation
Advisors
Tolles, William M.
Date of Issue
1974-03
Date
March 1974
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A method was developed to investigate the dielectric response of non-spherical zinc oxide particles in a gaseous suspension. The method exploited a change in a microwave cavity resonance when the particles were aligned with respect to the microwave electric field. To enhance the detectability of this change, modulation techniques were employed for alignment and detection purposes.
A theory was devised to explain this method and experiments were conducted, the results of which support this theory. Investigations with the zinc oxide particles produced in these experiments indicated that the particle response demonstrated saturation and that the particles are easily aligned in an electric field strength of several hundred Volts/cm. The zinc oxide particles produced showed a relaxation frequency of approximately 56 Hz and ranged in size from approximately 2.0 to 3.5 microns in length.
Type
Thesis
Description
Series/Report No
Department
Physics and Chemistry
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.