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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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).”
T. Kumada, R. Ishiguro, Y. Kimachi
Nuclear Science and Engineering | Volume 70 | Number 1 | April 1979 | Pages 73-81
Technical Paper | doi.org/10.13182/NSE79-A18929
Articles are hosted by Taylor and Francis Online.
Diffusion coefficients of sodium vapors in argon and helium gases were measured from 380 to 560°C by the Stefan method under atmospheric pressure. Careful considerations were made in the design of the apparatus to obtain data within a ±10% error, which arises from several sources inherent in the Stefan method. The experimental errors inherent in such sources were theoretically evaluated. The experimental diffusion coefficients were compared with those predicted by the majority of previous theoretical expressions. The comparisons revealed that the expressions proposed by Moulaert for the sodium-argon mixture and by Aref'yev et al. for the sodium-helium mixture predicted values that were in excellent agreement with the measurements.