Accession Number : ADA308242

Title :   Experimental Study of Transient Effects in Dielectric Materials Caused by Electron Irradiation.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Storti, George M. ; Phillips, Donald H. ; Frank, Clifford S.

PDF Url : ADA308242

Report Date : OCT 1965

Pagination or Media Count : 59

Abstract : Voltage pulses in capacitors and insulated wires during low energy electron irradiation were studied. Various dielectric materials (polyethylene terephthalate, polytetrafluoroethylene, polystyrene, ceramic, polypyromellitimide, regenerated cellulose, polyvinyl alcohol, a copolymer of polyvinyl chloride and polyvinylidene chloride, mica paper, and silicone impregnated mica paper) were tested over a range of incident electron kinetic energies, temperatures, and dose rates. The number of pulses was found to vary with the incident electron kinetic energy. Temperature also had a profound effect on the number of pulses. Irradiation at low temperatures resulted in a greater number of pulses. Some of the present results are compared with results obtained from previously published work on the x ray induced conductivity in dielectric materials.

Descriptors :   *DIELECTRICS, *ELECTRON IRRADIATION, POLYSTYRENE, COPOLYMERS, VOLTAGE, ELECTRICAL CONDUCTIVITY, ELECTRON ENERGY, PULSES, CHLORIDES, DOSE RATE, PAPER, SILICONES, CAPACITORS, POLYVINYLIDENES, POLYVINYL CHLORIDE, CELLULOSE, ELECTRICAL INSULATION, IMPREGNATION, MICA, POLYVINYL ALCOHOL, POLYETHYLENE TEREPHTHALATE.

Subject Categories : Plastics
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE