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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Russia withdraws from 25-year-old weapons-grade plutonium agreement
Russia’s lower house of Parliament, the State Duma, approved a measure to withdraw from a 25-year-old agreement with the United States to cut back on the leftover plutonium from Cold War–era nuclear weapons.
Long-Poe Ku, Joseph G. Kolibal
Fusion Science and Technology | Volume 4 | Number 1 | July 1983 | Pages 69-78
Technical Paper | Shielding | doi.org/10.13182/FST83-A22776
Articles are hosted by Taylor and Francis Online.
By altering the collision mechanism in the numerical transport calculations, and by constructing an analytical model based on age-diffusion theory, the outstanding feature in the life history of deuterium-deuterium (D-D) fusion neutrons penetrating deeply into ordinary concrete is shown to be the transport in the 2.3-MeV oxygen antiresonance. This result is used to assess the impact of the cross-section uncertainties and the uncertainties due to variations in the D-D fusion spectrum and temperature.
