Cooperative Radiation Effects Simulation Program.
Semiannual progress rept. 1 May-31 Oct 72,
NAVAL RESEARCH LAB WASHINGTON D C
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The goal of the research is to provide the theoretical and experimental bases for understanding the mechanisms of void nucleation and growth and the influence of helium on both mechanical properties and void nucleation, as well as a theoretical insight into energy deposition processes. In this program, the Van de Graaff and Cyclotron are used to rapidly simulate the radiation damage produced over long operating periods in reactor neutron environments. This third semiannual progress report includes 1 an electron microscopy analysis of nickel-ion bombarded nickel, 2 studies using small angle x-ray scattering techniques, 3 observations of helium migration in 316 stainless steel, 4 the effect of Cyclotron-injected helium on the fatigue properties of 316 stainless steel, 5 an improved computer program for calculating energy deposition in matter by energetic heavy ions, 6 the development of a nickel beam intensity at the Van de Graaff which is one of the highest available anywhere, and 7 the use of a coincident alpha alpha elastic scattering technique for non-destructive measurement of the content and concentration depth profile of helium in thin metal foils. Author Modified Abstract
- Metallurgy and Metallography
- Radioactivity, Radioactive Wastes and Fission Products
- Fission Reactor Materials