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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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Latest News
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).
Trine-Yie Dawn, Ing-Jane Chen
Nuclear Science and Engineering | Volume 72 | Number 2 | November 1979 | Pages 237-243
Technical Paper | doi.org/10.13182/NSE72-237
Articles are hosted by Taylor and Francis Online.
Based on two properties of the discrete eigenvalues of the one-speed neutron transport equation with anisotropic scattering, we discuss the number and mathematical character of these discrete eigenvalues when the scattering function can be expanded into a finite series of Legendre polynomials. Such special cases as linearly and quadratically anisotropic scattering are studied in detail, and our results are plotted in parameter space. We also investigate the two physically interesting problems of isotropic scattering and linearly anisotropic scattering in the center-of-mass system. The discrete eigenvalues of these two problems are obtained numerically.
