ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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Nuclear Science and Engineering
July 2025
Nuclear Technology
June 2025
Fusion Science and Technology
Latest News
BREAKING NEWS: Trump issues executive orders to overhaul nuclear industry
The Trump administration issued four executive orders today aimed at boosting domestic nuclear deployment ahead of significant growth in projected energy demand in the coming decades.
During a live signing in the Oval Office, President Donald Trump called nuclear “a hot industry,” adding, “It’s a brilliant industry. [But] you’ve got to do it right. It’s become very safe and environmental.”
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.
