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Article

Desorption of Implanted Deuterium in Heavy Ion-Irradiated Zry-2

1
Research Institute for Applied Mechanics, Kyushu University, Kasuga-kouenn, Kasugashi, Fukuoka 816-8580, Japan
2
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga-kouenn, Kasugashi, Fukuoka 816-8580, Japan
3
Hitachi, Co., Ltd., Omika, Hitachshi, Ibaraki 319-1292, Japan
4
The Wakasa Wan Energy Research Center, Nagatani, Tsurugashi, Fukui 914-0192, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Akihiro Iwase
Received: 22 March 2021 / Revised: 22 April 2021 / Accepted: 23 April 2021 / Published: 26 April 2021
To understand the degradation behavior of light water reactor (LWR) fuel-cladding tubes under neutron irradiation, a detailed mechanism of hydrogen pickup related to the point defect formation (i.e., a-component and c-component dislocation loops) and to the dissolution of precipitates must be elucidated. In this study, 3.2 MeV Ni3+ ion irradiation was conducted on Zircaloy-2 samples at room temperature. Thermal desorption spectroscopy is used to evaluate the deuterium desorption with and without Ni3+ ion irradiation. A conventional transmission electron microscope and a spherical aberration-corrected high-resolution analytical electron microscope are used to observe the microstructure. The experimental results indicate that radiation-induced dislocation loops and hydrides form in Zircaloy-2 and act as major trapping sites at lower (400–600 °C) and higher (700–900 °C)-temperature regions, respectively. These results show that the detailed microstructural changes related to the hydrogen pickup at the defect sinks formed by irradiation are necessary for the degradation of LWR fuel-cladding tubes during operation. View Full-Text
Keywords: light water reactor; zirconium alloys; nuclear fuel cladding; thermal desorption spectroscopy; transmission electron microscopy light water reactor; zirconium alloys; nuclear fuel cladding; thermal desorption spectroscopy; transmission electron microscopy
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MDPI and ACS Style

Watanabe, H.; Saita, Y.; Takahashi, K.; Yasunaga, K. Desorption of Implanted Deuterium in Heavy Ion-Irradiated Zry-2. Quantum Beam Sci. 2021, 5, 9. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020009

AMA Style

Watanabe H, Saita Y, Takahashi K, Yasunaga K. Desorption of Implanted Deuterium in Heavy Ion-Irradiated Zry-2. Quantum Beam Science. 2021; 5(2):9. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020009

Chicago/Turabian Style

Watanabe, Hideo, Yoshiki Saita, Katsuhito Takahashi, and Kazufumi Yasunaga. 2021. "Desorption of Implanted Deuterium in Heavy Ion-Irradiated Zry-2" Quantum Beam Science 5, no. 2: 9. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs5020009

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