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Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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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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.
Nicolas H. Packan, Kenneth Farrell
Fusion Science and Technology | Volume 3 | Number 3 | May 1983 | Pages 392-404
Technical Paper | Material Engineering | doi.org/10.13182/FST83-A20863
Articles are hosted by Taylor and Francis Online.
Microstructural damage is measured in a stable austenitic alloy after nickel-ion bombardment to doses of 1 to 70 dpa at temperatures in the range of 840 to 1100 K. The influence of helium, both preimplanted at room temperature and coimplanted at a rate of 20 at. ppm per dpa, is examined. The helium causes considerable increases in the concentrations of cavities and reductions in cavity size, and shifts the peak swelling temperature upward by ∼50 K; growth of dislocation loops is delayed. Preimplanted helium has much more pronounced effects than coimplanted helium, including the generation of a large secondary population of small cavities deemed to be helium bubbles, and in some cases submicroscopic bubbles. Cavitation is assessed with regard to the concept of a critical size for bias-driven cavity growth. The results of this experiment are attributed to helium-enhanced cavity nucleation and to the influence of such nucleation on the cavity and dislocation sink strengths.