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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
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Y. Oya, Y. Makide, K. Chiba, S. Tanaka, Y. Morimoto, H. Kodama, K. Okuno, T. Kawano, Y. Asakura, T. Uda
Fusion Science and Technology | Volume 44 | Number 2 | September 2003 | Pages 359-363
Technical Paper | Fusion Energy - Tritium and Safety and Environment | doi.org/10.13182/FST03-A360
Articles are hosted by Taylor and Francis Online.
To investigate the hydrogen behavior in/on the Stainless Steel (SS)-304, the deuterium or heavy water was sorbed on the sample by various methods, such as water adsorption, ion irradiation and electrolysis, and the chemical states of iron, chromium, nickel and oxygen were studied by means of X-ray photoelectron spectroscopy (XPS). It was found that the metal oxide and oxyhydroxide, FeOOD or CrOOD, were formed on the surface of SS-304. The oxyhydroxide was dominant on the surface of the sample charged by electrolysis. However, metal oxide was observed on the surface of SS-304 after D2O water adsorption. The thermal desorption spectroscopy (TDS) was also applied to the evaluation of the thermal desoprtion behaviors of D2 and D2O from SS-304. It was found that three peaks were found in the sample charged with electrolysis. Among them, two peaks were also observed in the sample with water adsorption. The first peak, which was only found in the sample charged with electrolysis, suggests the D2 and D2O release by the decomposition of oxyhydroxide, and the second peak was induced by the decomposition of hydroxide or aquo-iron complexes. The third deuterium release would be induced by the desorption of the dissociative absorbed deuterium. It was concluded that the existence and chemical form of oxygen influence the retention of deuterium on/in SS-304.
