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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
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).”
Jiangang Yu, Wenjia Han, Ziwei Lian, Kaigui Zhu
Fusion Science and Technology | Volume 73 | Number 1 | January 2018 | Pages 5-12
Technical Paper | doi.org/10.1080/15361055.2017.1372680
Articles are hosted by Taylor and Francis Online.
In this work, polycrystalline tungsten prepared by powder sintering and naonocrystalline tungsten film deposited by magnetron sputtering were simultaneously exposed to deuterium plasma with energy of 78 eV and fluence of 3.9 × 1024 m−2 at 450 K. The morphologies of both samples before and after deuterium plasma exposure were measured by scanning electron microscopy. Then, the deuterium retention of both samples was determined by thermal desorption spectroscopy. After irradiation, a few blisters were observed on polycrystalline tungsten, but no sign of surface modification was detected on nanocrystalline tungsten film. In addition, the deuterium retention is higher in nanocrystalline tungsten film than in polycrystalline tungsten. The fact that nanocrystalline tungsten film deposited by magnetron sputtering has a larger density of grain boundaries and native defects are responsible for no blistering and high retention in comparison with the polycrystalline tungsten.