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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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Latest News
Dragonfly, a Pu-fueled drone heading to Titan, gets key NASA approval
Curiosity landed on Mars sporting a radioisotope thermoelectric generator (RTG) in 2012, and a second NASA rover, Perseverance, landed in 2021. Both are still rolling across the red planet in the name of science. Another exploratory craft with a similar plutonium-238–fueled RTG but a very different mission—to fly between multiple test sites on Titan, Saturn’s largest moon—recently got one step closer to deployment.
On April 25, NASA and the Johns Hopkins University Applied Physics Laboratory (APL) announced that the Dragonfly mission to Saturn’s icy moon passed its critical design review. “Passing this mission milestone means that Dragonfly’s mission design, fabrication, integration, and test plans are all approved, and the mission can now turn its attention to the construction of the spacecraft itself,” according to NASA.
Yoshinori Ueda, Shiro Matsumoto
Nuclear Technology | Volume 144 | Number 3 | December 2003 | Pages 400-406
Technical Note | Reprocessing | doi.org/10.13182/NT03-A3454
Articles are hosted by Taylor and Francis Online.
Abnormal flows such as an entrainment or an overflow have been restricted severely in the design and operation of the solvent extraction process. The effect of the abnormal flows on the process has been studied for a PUREX flow sheet to find a way to manage their unfavorable effects on the process. As one of these activities, the algebraic equation expressing the concentration of the outflow by the operational conditions for a countercurrent solvent extraction system with the existence of abnormal flows was derived. This equation was the expanded form of the conventional Kremser's equation, which has been applied to the flow sheet under normal conditions. The preliminary study using the equation is also shown.