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Materials 2017, 10(10), 1148; doi:10.3390/ma10101148

In Situ TEM Multi-Beam Ion Irradiation as a Technique for Elucidating Synergistic Radiation Effects

1
Radiation Solid Interactions, Sandia National Laboratories, Albuquerque, NM 87185, USA
2
Analytical Technologies, Sandia National Laboratories, Albuquerque, NM 87185, USA
3
Energetics Characterization, Sandia National Laboratories, Albuquerque, NM 87185, USA
4
Energy and Environment, Pacific Northwest National Laboratory, Richland, WA 99354, USA
*
Author to whom correspondence should be addressed.
Received: 16 August 2017 / Revised: 23 September 2017 / Accepted: 27 September 2017 / Published: 29 September 2017
(This article belongs to the Special Issue Ion Beam Analysis, Modification, and Irradiation of Materials)
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Abstract

Materials designed for nuclear reactors undergo microstructural changes resulting from a combination of several environmental factors, including neutron irradiation damage, gas accumulation and elevated temperatures. Typical ion beam irradiation experiments designed for simulating a neutron irradiation environment involve irradiating the sample with a single ion beam and subsequent characterization of the resulting microstructure, often by transmission electron microscopy (TEM). This method does not allow for examination of microstructural effects due to simultaneous gas accumulation and displacement cascade damage, which occurs in a reactor. Sandia’s in situ ion irradiation TEM (I3TEM) offers the unique ability to observe microstructural changes due to irradiation damage caused by concurrent multi-beam ion irradiation in real time. This allows for time-dependent microstructure analysis. A plethora of additional in situ stages can be coupled with these experiments, e.g., for more accurately simulating defect kinetics at elevated reactor temperatures. This work outlines experiments showing synergistic effects in Au using in situ ion irradiation with various combinations of helium, deuterium and Au ions, as well as some initial work on materials utilized in tritium-producing burnable absorber rods (TPBARs): zirconium alloys and LiAlO2. View Full-Text
Keywords: ion irradiation; triple beam; in situ TEM; synergistic effects; ion implantation; helium bubble; radiation effects ion irradiation; triple beam; in situ TEM; synergistic effects; ion implantation; helium bubble; radiation effects
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Taylor, C.A.; Bufford, D.C.; Muntifering, B.R.; Senor, D.; Steckbeck, M.; Davis, J.; Doyle, B.; Buller, D.; Hattar, K.M. In Situ TEM Multi-Beam Ion Irradiation as a Technique for Elucidating Synergistic Radiation Effects. Materials 2017, 10, 1148.

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