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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver 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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Apr 2025
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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
James M. Williams, T. G. Frank
Nuclear Technology | Volume 22 | Number 3 | June 1974 | Pages 360-372
Technical Paper | Material | doi.org/10.13182/NT74-A31420
Articles are hosted by Taylor and Francis Online.
The current pace of development of laser-driven fusion together with the urgency of providing sources of safe, clean, low-cost electrical energy have prompted consideration of the major materials problems that must be solved before practical laser fusion can be realized. Many of the materials problems associated with laser fusion are common also to magnetically confined fusion reactors. These include the degradation in physical and mechanical properties of structural materials from neutron irradiation and the formation of interstitial gas, problems related to the use of lithium as a reactor coolant, and the necessity to breed tritium for use in the fuel cycle. Some materials problems are unique to laser fusion. Laser-beam transport requires the use of windows and mirrors that may be damaged by intense laser light. Cyclic stresses imposed on reactor-cavity and blanket-region wall structures accentuate the importance of radiation-induced changes in elastic moduli of structural materials.