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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
August 2025
Latest News
TVA and Entra1 to deploy 6 GW of NuScale SMRs
The Tennessee Valley Authority and Houston, Texas–based energy production company Entra1 Energy recently announced the signing of an agreement to collaborate on the deployment of six new nuclear power plants equipped with NuScale small modular reactors.
Yasuhisa Oya, Suguru Masuzaki, Masayuki Tokitani, Moeko Nakata, Fei Sun, Makoto Oyaidzu, Kanetsuku Isobe, Nobuyuki Asakura, Teppei Otsuka, Anna Widdowson, Jari Likonen, Marek Rubel, JET Contributors
Fusion Science and Technology | Volume 76 | Number 4 | May 2020 | Pages 439-445
Technical Paper | doi.org/10.1080/15361055.2020.1716455
Articles are hosted by Taylor and Francis Online.
Hydrogen isotope retention and chemical state for the tiles exposed to plasma in the JET–ITER-like wall (ILW) during two campaigns in 2011–2012 (first campaign, ILW-1) and 2015–2016 (third campaign, ILW-3) were studied and compared by means of X-ray photoelectron spectroscopy and thermal desorption spectroscopy. In both campaigns the upper part of the inner divertor tiles was the deposition-dominated area, while erosion was observed on the outer divertor tiles. Therefore, higher deuterium retention was found on the inner divertor tiles. The major D desorption peak for the inner divertor tiles from ILW-3 was located at the temperature range of 470°C to 520°C, which was higher than measured after ILW-1: 370°C to 430°C. The XPS analyses showed the formation of a BeO layer on the ILW-3 inner divertor tiles, while after ILW-1 the layers also contained a significant amount of carbon. Deuterium retention was reduced toward the outer divertor tiles. The differences could be related to the difference in the power level in the two campaigns.