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Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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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
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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
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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.
Emilio Franconi
Fusion Science and Technology | Volume 6 | Number 2 | September 1984 | Pages 414-419
Technical Paper | Selected papers from the Ninth International Vacuum Congress and the Fifth International Conference on Solid Surfaces (Madrid, Spain, September 26-October 1, 1983) | doi.org/10.13182/FST84-A23215
Articles are hosted by Taylor and Francis Online.
Transmission of microwave radiation at the lower hybrid frequency may induce multipactor breakdown in the coupling structure of a tokamak machine. To increase the R.F. power throughput to a plasma, secondary electron emission on the waveguide walls and subsequent electron multiplication which cause multipactor breakdown effect must be reduced. In this work measurements of secondary electron yields δ of two kinds of coatings (graphite, TiC) on S.S. were performed as a function of primary beam energies (100 eV; 1.1 keV). Also uncoated stainless steel was measured. Results show δ to have a typical energy dependence, with a peak occuring at 200 to 300 eV for normal electron beam incidence. The graphite and TiC coatings after surface treatment give δmax < 1, which allows to reduce multipacting in waveguide.
