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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Deep geologic repository progress—2025 Update
Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.
Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.
Y. Ikeda, C. Konno, T. Nakamura, A. Kumar, M. A. Abdou
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1961-1966
Neutronic | Proceedings of the Ninth Topical Meeting on the Technology of Fusion Energy (Oak Brook, Illinois, October 7-11, 1990) | doi.org/10.13182/FST91-A29629
Articles are hosted by Taylor and Francis Online.
An experiment of Induced radioactivity and decayheat has been conducted in the framework of JAERI/USDOE collaborative program on the fusion blanket neutronics. Sixteen different materials have been irradiated in two typical DT neutron fields simulating spectra at the first wall and blanket regions of a fusion reactor. Induced radioactivity production profiles for both short and long irradiation times were analyzed by detecting associated γ-ray energy spectra. Energy release rate in material was characterized on the basis of the γ-ray emission data measured as well as β-ray contribution estimated. In this experimental study, focuses were placed not only on providing benchmark data for verification of the calculation code and nuclear data, but also on a comparative study for providing a guide line for the material selection concerning the dose rate as well as the decayheat after shutdown in the near term DT fusion devices.