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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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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Software modeling to validate the safety of nuclear disposal sites
A new study, “Building Confidence in Models for Complex Barrier Systems for Radionuclides,” highlights a breakthrough in the modeling and simulation of underground nuclear waste interactions. Led by Massachusetts Institute of Technology Ph.D. student Dauren Sarsenbayev, assistant professor and ANS member Haruko Wainwright, and scientists Christophe Tournassat and Carl Steefel, the research shows how cutting-edge, high-performance computing simulations closely align with real-world experimental data from the Mont Terri underground laboratory in Switzerland. The alignment enhances confidence in the long-term safety of geological nuclear waste repositories.
D. Anderson, M. Lisak, F. Andersson, T. Fülöp
Nuclear Science and Engineering | Volume 146 | Number 1 | January 2004 | Pages 99-105
Technical Paper | doi.org/10.13182/NSE04-A2396
Articles are hosted by Taylor and Francis Online.
A detailed discussion is given of the effects of energy diffusion and pitch-angle scattering on the slowing-down dynamics of a beam of monoenergetic particles being released with unidirectional velocity. Approximate solutions are given for characteristic averaged quantities like the pitch-angle averaged distribution function and different physically relevant velocity moments. The relation to previous exact investigations is discussed.
