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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
J. D. Galambos, L. John Perkins
Fusion Science and Technology | Volume 25 | Number 2 | March 1994 | Pages 176-181
Technical Paper | Fusion Reactor | doi.org/10.13182/FST94-A30266
Articles are hosted by Taylor and Francis Online.
If the next-step International Thermonuclear Experimental Reactor (ITER) is designed to operate at finite energy multiplication (Q ∼ 10 to 20), as opposed to ignition (Q ∼ ∞), appreciable reductions in size and cost will result. Ignition will be attainable in such a “high-Q targeted” device under slightly enhanced confinement conditions. For example, with the nominal design guidelines from the ITER Conceptual Design Activity (CDA), designing for Q = 15 instead of ignition results in ∼20% savings in size and cost. Ignition would still be achievable in such a reduced-size device if the L-mode energy confinement enhancement factor (i.e., H factor) is ∼15% higher than the assumed nominal value of 2.0. This size/cost impact is large compared to other sensitivities, and the range of H-fact or improvement needed to recoup ignition is small compared to the uncertainty in the confinement scalings themselves.