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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Latest News
ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Ikuji Takagi, Ryoutarou Sugiura, Kazushi Shirai, Kunio Higashi
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 902-906
Material Interaction and Permeation | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22715
Articles are hosted by Taylor and Francis Online.
Isotropic graphite of ETP-10 was exposed to a deuterium rf-plasma at room temperature and depth profiles of deuterium near the plasma-facing surface were observed by a nuclear reaction analysis. The depth profile consisted of two parts, which were a peak at the surface and a gradual slope downward to the depths. The surface density of deuterium estimated from the peak area was saturated with longer time and hardly decreased after the exposure. This was explained by that the incident deuterium atoms from the plasma were absorbed on deuterium-free sites and absorbed atoms were not desorbed. The deuterium concentration in the bulk increased nearly in proportion to the square root of time and gradually decreased after the plasma exposure. This was explained by a simple diffusion model and an apparent diffusion coefficient was found to be 2x10−18 m2s−1 from the depth profile.