Accession Number : ADA117315

Title :   Electrical Properties of Heated Dielectrics.

Descriptive Note : Conference paper,

Corporate Author : ARMY NIGHT VISION LAB FORT BELVOIR VA

Personal Author(s) : Sharp,Edward J ; Garn,Lynn E

PDF Url : ADA117315

Report Date : 18 Jun 1982

Pagination or Media Count : 15

Abstract : A method has been described which allows one to analyze complicated currents emanating from warmed dielectrics. This technique is easily applied for temperature waves of certain amplitude and frequency limits and permits an accurate assessment of dielectric materials being examined for specific applications, such as infrared detectors or vidicon targets, where it is necessary to know the current magnitude and relaxation properties as a function of temperature and temperature changes. The low-frequency temperature wave method is a direct dynamic measurement of the pyroelectric coefficient. This method eliminates the nedd for measurements of specific heats, dielectric constants, and radiation absorption coefficients as well as identifying the effects due to irreversible currents which occur when samples are heated at a constant rate.

Descriptors :   *Dielectrics, *Heat treatment, *Electrical properties, *Test and evaluation, Rates, Constants, Dielectric properties, Measurement, Frequency standards, Infrared radiation, Currents, Irreversible processes, Targets, Vidicons, Absorption coefficients, Infrared detection, Low frequency, Waves, Radiation absorption

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE