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In situdefect annealing of swift heavy ion irradiated CeO2and ThO2using synchrotron X-ray diffraction and a hydrothermal diamond anvil cell

Palomares, Raul I. and Tracy, Cameron L. and Zhang, Fuxiang and Park, Changyong and Popov, Dmitry and Trautmann, Christina and Ewing, Rodney C. and Lang, Maik (2015):
In situdefect annealing of swift heavy ion irradiated CeO2and ThO2using synchrotron X-ray diffraction and a hydrothermal diamond anvil cell.
In: Journal of Applied Crystallography, Wiley Blackwell, NJ, USA, pp. 711-717, 48, (3), ISSN 1600-5767, [Online-Edition: http://dx.doi.org/10.1107/S160057671500477X],
[Article]

Abstract

Hydrothermal diamond anvil cells (HDACs) provide facile means for coupling synchrotron X-ray techniques with pressure up to 10 GPa and temperature up to 1300 K. This manuscript reports on an application of the HDAC as an ambient-pressure sample environment for performing in situ defect annealing and thermal expansion studies of swift heavy ion irradiated CeO2 and ThO2 using synchrotron X-ray diffraction. The advantages of the in situ HDAC technique over conventional annealing methods include rapid temperature ramping and quench times, high-resolution measurement capability, simultaneous annealing of multiple samples, and prolonged temperature and apparatus stability at high temperatures. Isochronal annealing between 300 and 1100 K revealed two-stage and one-stage defect recovery processes for irradiated CeO2 and ThO2, respectively, indicating that the morphology of the defects produced by swift heavy ion irradiation of these two materials differs significantly. These results suggest that electronic configuration plays a major role in both the radiation-induced defect production and high-temperature defect recovery mechanisms of CeO2 and ThO2.

Item Type: Article
Erschienen: 2015
Creators: Palomares, Raul I. and Tracy, Cameron L. and Zhang, Fuxiang and Park, Changyong and Popov, Dmitry and Trautmann, Christina and Ewing, Rodney C. and Lang, Maik
Title: In situdefect annealing of swift heavy ion irradiated CeO2and ThO2using synchrotron X-ray diffraction and a hydrothermal diamond anvil cell
Language: English
Abstract:

Hydrothermal diamond anvil cells (HDACs) provide facile means for coupling synchrotron X-ray techniques with pressure up to 10 GPa and temperature up to 1300 K. This manuscript reports on an application of the HDAC as an ambient-pressure sample environment for performing in situ defect annealing and thermal expansion studies of swift heavy ion irradiated CeO2 and ThO2 using synchrotron X-ray diffraction. The advantages of the in situ HDAC technique over conventional annealing methods include rapid temperature ramping and quench times, high-resolution measurement capability, simultaneous annealing of multiple samples, and prolonged temperature and apparatus stability at high temperatures. Isochronal annealing between 300 and 1100 K revealed two-stage and one-stage defect recovery processes for irradiated CeO2 and ThO2, respectively, indicating that the morphology of the defects produced by swift heavy ion irradiation of these two materials differs significantly. These results suggest that electronic configuration plays a major role in both the radiation-induced defect production and high-temperature defect recovery mechanisms of CeO2 and ThO2.

Journal or Publication Title: Journal of Applied Crystallography
Volume: 48
Number: 3
Publisher: Wiley Blackwell, NJ, USA
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Ion-Beam-Modified Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 29 Feb 2016 13:38
Official URL: http://dx.doi.org/10.1107/S160057671500477X
Identification Number: doi:10.1107/S160057671500477X
Funders: This work was supported by the Energy Frontier Research Center 'Materials Science of Actinides' funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences (DE-SC0001089)., HPCAT operations are supported by DOE-NNSA under award No. DE-NA0001974 and DOE-BES under award No. DE-FG02-99ER45775, with partial instrumentation funding by NSF., APS is supported by DOE-BES, under contract No. DE-AC02-06CH11357., HPCAT beamtime was granted by the Carnegie/DOE Alliance Center.
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