Accession Number : AD0623904

Title :   TRANSIENT RADIATION EFFECTS ON ELECTRONIC PARTS.

Descriptive Note : Final rept., 16 Jun 64-14 Jun 65,

Corporate Author : GENERAL DYNAMICS SAN DIEGO CA GENERAL ATOMIC DIV

Personal Author(s) : VAN Lint, V. A. J. ; Overmyer, R. F. ; Nichols, D. K.

Report Date : 10 JUL 1965

Pagination or Media Count : 88

Abstract : Prompt and delayed conductivity in mica, ceramic, tantalum oxide, and Mylar dielectrics with various types of electrodes under Linac irradiation are reported. Fast neutron-induced conductivity of a Mylar capacitor irradiated in the TRIGA reactor is found to be =4.4 X 10 to the minus 27th power (nv) to the 0.95 power. A theory of neutron induced ionization in insulators has been formulated which predicts linear dependence of conductivity with neutron energy deposition rate. Data from irradiations of EG-58 aluminum coaxial cable at the TRIGA reactor facility, at the Sandia Pulsed Reactor Facility, and with a 14-MeV neutron generator show that the saturated response of EG-58 is smaller than conventional RG-58 cable response. Ionized-gas experiments in a parallel-plate geometry indicate that a potential of -2.5 v is sufficient to repel approximately one-half the secondary electrons reaching the signal plate from nearby plates. A computer program describing the motion of holes and electrons in a p-n diode has been revised to describe the motion of electrons and ions in an ionized gas in parallel-plate geometry under an applied field. (Author)

Descriptors :   *DAMAGE, *DIELECTRICS, ELECTRONIC EQUIPMENT, CONDUCTIVITY, MICA, CERAMIC MATERIALS, TANTALUM COMPOUNDS, OXIDES, POLYESTER PLASTICS, CAPACITORS, COAXIAL CABLES, PLASMAS(PHYSICS).

Subject Categories : Radioactiv, Radioactive Wastes & Fission Prod
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE