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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Surplus plutonium for power reactor fuel: What’s on offer
The Department of Energy has a plan for private companies to “dispose of surplus plutonium”—about 19.7 metric tons in both oxide and metal forms—by “making the materials available for advanced nuclear technologies.” A Surplus Plutonium Utilization Program request for applications (RFA) issued October 21 describes the plutonium on offer, and the “thresholds” prospective applicants must meet.
Noel Corngold, Larry Zamick
Nuclear Science and Engineering | Volume 9 | Number 3 | March 1961 | Pages 367-369
Technical Paper | doi.org/10.13182/NSE61-A25889
Articles are hosted by Taylor and Francis Online.
In this paper, we discuss the effect of diffusion on the slowing-down spectrum of neutrons in the upper portion of the thermal regime. We find that in a typical case, the perturbation due to diffusion is comparable to the difference between bound atom and free atom spectra, in the energy range E > 0.1 ev.
