TEM and XAS investigation of fission gas behaviors in U-Mo alloy fuels through ion beam irradiation
| Autor: | Marquis A. Kirk, Rachel Seibert, Bo Zhang, Jeff Terry, Jing Liu, Di Yun, Kevin Logan, Yang Du, Daniel Velazquez, Walid Mohamed, Peter M. Baldo, Hang Zang, Yedong Gao, Wenbo Liu, Kun Mo, Kunpeng Wang, Abdellatif M. Yacout |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Nuclear and High Energy Physics
X-ray absorption spectroscopy Materials science Absorption spectroscopy Fission Quantitative Biology::Tissues and Organs Physics::Medical Physics Alloy Analytical chemistry Nucleation 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Fluence 010305 fluids & plasmas Ion Crystallography Nuclear Energy and Engineering 0103 physical sciences engineering General Materials Science Irradiation 0210 nano-technology |
| Zdroj: | Journal of Nuclear Materials. 494:165-171 |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2017.07.033 |
| Popis: | In this study, smaller-grained (hundred nano-meter size grain) and larger-grained (micro-meter size grain) U-10Mo specimens have been irradiated (implanted) with 250 keV Xe + beam and were in situ characterized by TEM. Xe bubbles were not seen in the specimen after an implantation fluence of 2 × 10 20 ions/m 2 at room temperature. Nucleation of Xe bubbles happened during heating of the specimen to a final temperature of 300 °C. By comparing measured Xe bubble statistics, the nucleation and growth behaviors of Xe bubbles were investigated in smaller-grained and larger-grained U-10Mo specimens. A multi-atom kind of nucleation mechanism has been observed in both specimens. X-ray Absorption spectroscopy showed the edge position in the bubbles to be the same as that of Xe gas. The size of Xe bubbles has been shown to be bigger in larger-grained specimens than in smaller-grained specimens at the same implantation conditions. |
| Databáze: | OpenAIRE |
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