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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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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Perpetual Atomics, QSA Global produce Am fuel for nuclear space power
U.K.-based Perpetual Atomics and U.S.-based QSA Global claim to have achieved a major step forward in processing americium dioxide to fuel radioisotope power systems used in space missions. Using an industrially scalable process, the companies said they have turned americium into stable, large-scale ceramic pellets that can be directly integrated into sealed sources for radioisotope power systems, including radioisotope heater units (RHUs) and radioisotope thermoelectric generators (RTGs).
William H. Miller, David Hollabaugh, Walter Meyer
Nuclear Science and Engineering | Volume 65 | Number 3 | March 1978 | Pages 554-557
Technical Note | doi.org/10.13182/NSE78-A27188
Articles are hosted by Taylor and Francis Online.
Angular dependent fast-neutron penetration spectra have been calculated and experimentally measured for fast neutrons non-normally incident on water slabs. Previously reported work has included a comprehensive set of experimental measurements for angular dependent penetration spectra measured for poly energetic fast neutrons normally incident on water slabs. Corresponding Monte Carlo calculated results were in good agreement and were tabulated for direct calculations of penetration spectra for complex geometries. The results of the experiments described here extend the applicability of these results for normal incidence to certain cases of non-normal incidence.
