Investigation of Adsorption and Desorption Mechanism of Water on Material Surface

Kunihiko Chiba; Rumi Sato; Toshiaki Yoneoka; Satoru Tanaka

doi:dx.doi.org/10.13182/FST02-A22617

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Investigation of Adsorption and Desorption Mechanism of Water on Material Surface

Kunihiko Chiba, Rumi Sato, Toshiaki Yoneoka, Satoru Tanaka

Fusion Science and Technology / Volume 41 / Number 3P2 / May 2002 / Pages 386-390

Properties and Reaction / Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 / dx.doi.org/10.13182/FST02-A22617

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Desorption behavior of D₂O or H₂O, as a simulant of HTO, on iron surface covered with thin iron oxide film was studied by photon stimulated desorption (PSD) using deuterium lamp, Hg-Xe lamp and dye laser as photon sources. When the iron was irradiated with photon, water or hydrogen molecules were desorbed. Desorption behavior of water and hydrogen molecules depended on the incident energy of photon. Desorption mechanism of water and hydrogen molecules by photon irradiation is discussed.