RADIATION EFFECTS ON DIELECTRIC MATERIALS.
Abstract
The report describes the characteristics of the irradiation facilities and the instrumentation used in measuring the transient radiation effects in capacitor dielectric materials. The Accelerator Pulsed Fast Assembly and the TRIGA reactor irradiations of Mylar, mica, ceramic, and tantalum oxide dielectrics are described with some preliminary results included; however, final results await dosimetry data and computer analysis of delayed conductivity components. An effort to compare capacitor transient effects data from various sources is discussed. Analysis of the data and measurement techniques is being carried out in an attempt to resolve some of the discrepancies in reported data. A program of data comparison between General Atomic and IBM is also discussed. A Linac experiment with several mica capacitors indicated that air trapped inside small, molded-case capacitors may be the explanation for some anomalous transient effects measurements. The numerical estimates of neutron induced conductivity and charge transfer in dielectrics have been improved due to the realization that certain approximations used in the derivation cause a much smaller error than formerly supposed. A program has been outlined for verification of the theory using direct irradiation with protons of various energies. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 17, 1965
- Accession Number
- AD0626474
Entities
People
- D. K. Nichols
- R. F. Overmyer
- V. A. J. Van Lint