ATOMIC PARTICLE IRRADIATION TECHNIQUES
Abstract
A study of materials behavior at high peak power densities was conducted, using a 1.5 MeV Van de Graaff accelerator as a pulsed electron source. Results are presented for a range of metals studies at peak power densities of 6-10 megawatts/sq cm over a 40 microsec pulse period. The effects observed are in approximate agreement with the simple theory, presented in an earlier interim report, which takes into account material density, melting point, specific heat and heat of fusion. Studies of molten incandescent metal ejection accompanying irradiation have been conducted using a simple light chopper for elapsed time photography of these events. The phenomena of pulsed electron injection and storage in dielectrics have been examined using a fast framing camera, using the fluorescence induced in the target materials as an indication of the electron range of penetration for those transparent samples used or bridgewire backlighting for the study of opaque samples. The intrinsic dielectric strength of materials can be measured by this technique and the behavior of Lucite under these conditions is described in detail. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1965
- Accession Number
- AD0365434
Entities
People
- Henry J. Lackner
- Sam V. Nablo