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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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 Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
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.
Jan Källne, Giuseppe Gorini
Fusion Science and Technology | Volume 25 | Number 3 | May 1994 | Pages 341-352
Technical Paper | Alpha-Particle Special / Experimental Device | doi.org/10.13182/FST94-A30291
Articles are hosted by Taylor and Francis Online.
The development of next-step neutron spectrometers for use on high-power (especially burning) fusion plasmas is described. The expected performance specifications of optimized designs are compared with the fundamental limits of neutron diagnostics set by the underlying nuclear reactions for neutron detection. The potential results of the next-step spectrometers on the International Thermonuclear Experimental Reactor (ITER) and the Joint European Torus (JET) are illustrated, especially those derivable from details in the single-component neutron spectrum of thermal ion reactions and from the separation of thermal and suprathermal ion reactions in multiple-component spectra. The information content and its relationship to the quality of neutron spectrometry data are illustrated, and some implications on alpha-particle issues are discussed.
