Accession Number : AD0425090

Title :   RESEARCH LEADING TO SIGNIFICANT IMPROVEMENT OF ELECTRETS.

Descriptive Note : Final progress rept., 12 Nov 62-12 Sep 63,

Corporate Author : ION PHYSICS CORP BURLINGTON MASS

Personal Author(s) : Gersch,Herbert ; Stewart,Alexander

Report Date : NOV 1963

Pagination or Media Count : 98

Abstract : The stability and magnitude of the surface charge density of dielectric materials having electrets properties were evaluated. Organics, including polymers, waxes, lipids, and inorganics, including a variety of ceramic compositions and glasses, were formed and measured under different environmental conditions. Experiments were designed to determine whether the magnitude and stability of the observed surface charge densities reported in the literature were limited by the forming and storage environment or whether these values reflected a basic intrinsic material limitiation. The effect of the forming and storage parameters on the stability and magnitude of the surface charge is discussed in relation to the phenomenological theory of electret behavior which is expanded. (Author)

Descriptors :   (*ELECTRETS, STABILITY), (*DIELECTRICS, ELECTRETS), ORGANIC MATERIALS, POLYMERS, WAXES, CERAMIC MATERIALS, GLASS, SURFACE PROPERTIES, ELECTRICAL PROPERTIES, AIR, LOW PRESSURE, GENERATORS, DIFFERENTIAL EQUATIONS, INTEGRAL EQUATIONS, MATHEMATICAL ANALYSIS, POLARIZATION, THEORY, ELECTRONS, DAMAGE, RADIATION EFFECTS, SULFUR COMPOUNDS, FLUORINE COMPOUNDS, PRESSURE, TEST FACILITIES, ENVIRONMENTAL TESTS, CONTROLLED ATMOSPHERES, LIPIDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE