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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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!
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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.”
Jie Liu, Seiichi Koshizuka, Yoshiaki Oka
Nuclear Technology | Volume 144 | Number 3 | December 2003 | Pages 324-336
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT03-A3448
Articles are hosted by Taylor and Francis Online.
A computer code PROVER-II is developed for the propagation phase of a sodium vapor explosion. A new thermal fragmentation model is proposed that includes three kinds of timescales for modeling the instant fragmentation, spontaneous nucleation fragmentation, and normal boiling fragmentation. The pressure wave propagation in a sodium vapor explosion is analyzed and compared with that in a steam explosion. The energy conversion ratio of an in-vessel sodium vapor explosion is calculated by using hydrodynamic and thermal fragmentation mechanisms, and sensitivity analyses are carried out for some parameters. The initial thermal conditions for energetic fuel-coolant interactions in a sodium system are examined. Results show that the high saturation temperature of sodium results in a much lower pressure peak in a sodium vapor explosion compared to a steam explosion, and the mechanical energy release is limited by the mass of melt participating in the explosion during the core disruptive accident in liquid-metal-cooled fast breeder reactors.