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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.
L. L. Carter
Fusion Science and Technology | Volume 3 | Number 2 | March 1983 | Pages 165-180
Technical Paper | Special Section Content / Shielding | doi.org/10.13182/FST83-A20836
Articles are hosted by Taylor and Francis Online.
Monte Carlo calculations were used to determine total tissue dose rates through slab shields for monoenergetic neutron sources with energies up to 50 MeV. Calculations are summarized for the shields surrounding the test cell of the Fusion Materials Irradiation Test Facility. Dose rates from these rigorous calculations have been compared to dose rates obtained with effective removal cross sections so that such removal cross sections may be used for preliminary bulk shield assessments involving source neutrons with energies greater than ∼15 MeV.