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The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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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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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.
O. Auciello, A. A. Haasz, P. C. Stangeby
Fusion Science and Technology | Volume 6 | Number 2 | September 1984 | Pages 411-413
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-A23214
Articles are hosted by Taylor and Francis Online.
Methane production yields due to sub-eV H° impact on carbon are in the 10−3 – 10−4 CH4/H° range, i.e., about two orders of magnitude less than CH4/H+ yields for 0.1 – 100 keV H+ ions. Two macroscopic states of “reactivity” were identified for carbon: an “activated” state characterized by a CH4 yield vs. sample temperature curve with a maximum at 700–850K, and a “deactivated” state characterized by a monotonically decreasing yield as a function of temperature. Regarding the retention of sub-eV H° and D° in carbon, our results differ from previously published results. We have observed lower levels of trapped H° (∼1015 H°/cm2), with an apparent trend for saturation, at incident fluences of >2×1019 H°/cm2. Strong synergistic effects have been reported for combined sub-eV H°/5 keV Ar+ impact, while it appears that “insignificant” synergism exists for combined sub-eV H°/e− impact.
