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:

1965-07-10

Pagination or Media Count:

88.0

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:

• Radioactivity, Radioactive Wastes and Fission Products
• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE