ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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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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.
Koichi Maki
Fusion Science and Technology | Volume 10 | Number 1 | July 1986 | Pages 70-77
Technical Paper | Plasma Engineering | doi.org/10.13182/FST86-A24747
Articles are hosted by Taylor and Francis Online.
The possibility of burn control by hydrogen feeding was investigated for tokamak plasma under a self-sustained condition. When fusion power shifts higher than a target value, increases in hydrogen feed rate can lower the power by a reduction in ion temperature due to enhanced hydrogen density. Conversely, when the power shifts lower than the target, stopping hydrogen feeding and exhaust can increase the power through an increase in ion temperature due to reduced hydrogen density. Especially in the latter, in order to enlarge the recoverable magnitude of power shift, it is necessary to select a self-sustained condition having the highest hydrogen density. The results confirmed the possibility of burn control by hydrogen feeding.
