The ability to perform rapid separations in a post nuclear weapon detonation scenario is an important aspect of national security. In the past, separations of fission products have been performed using solvent extraction, precipitation, etc. The focus of this work is to explore the feasibility of using thermochromatography, a technique largely employed in superheavy element chemistry, to expedi...

The chemical element krypton, whose principal source is the atmosphere, had a long-lived radioactive content, in the mid-1940s, of less than 5 dpm per liter of krypton. In the late 1940s, this content had risen to values in the range of 100 dpm per liter. It is now some hundred times higher than the late 1940 values. This radioactivity is the result of the dissolving of nuclear fuel for militar...

Computational Fluid Dynamics (CFD) has been widely used in pressure drop/hydraulic loss calculations in many industries, including the aerospace and turbo-machinery industry as well as in the nuclear power industry. During the past 30 years, a significant amount of time and effort have been spent in benchmarking the CFD tools and models against test data in aerospace and turbo-machinery industr...

This paper addresses the relative suitability of nuclear and solar in Australia as a primary future electricity option, since nuclear can use abundant Australian resources of U235, but the direct solar option is the biggest global resource. The background is that we are likely to need generation systems which use close to zero net emissions by mid-century. There are many energy options, but few...

Dr. Charles W. Nakhleh is a technical staff member in the Safeguards Systems Group at the Los Alamos National Laboratory. His research interests include the applications of environmental monitoring to international safeguards, safeguarding of advanced nuclear fuel cycles, and policy and technology issues related to the Fissile Material Cutoff Treaty and the Treaty on the Non-Proliferation of Nu...

This paper considers the point defects that influence operation of a wav nuclear power reactor with uranium fuel medium. The formed individual or such defect groups can produce perturbing effect on stability operating mode and involve its transition to an unstable state. Studies have been carried out characteristics burnup wave in medium neutron multiplication for 2D geometry. For calculation, ...