Abstract
In this study, we investigate the thermal conductivity of U3Si2 amorphized by ion irradiation using 84 MeV 136Xe ions at 190 °C. The suspended-bridge method was utilized to measure the thermal conductivity, allowing for a detailed analysis of the specimen while minimizing interference from other crystalline phases. Our results indicate that the thermal conductivity of amorphous U3Si2 is significantly lower than that of unirradiated crystalline U3Si2. These findings are consistent with recent studies on in-pile-irradiated U3Si2 samples that consider the effects of U3Si2 amorphization, fission gas bubbles, and other impurities.
| Original language | English |
|---|---|
| Article number | 154734 |
| Journal | Journal of Nuclear Materials |
| Volume | 587 |
| DOIs | |
| State | Published - Dec 15 2023 |
Funding
This work was supported by the U.S. Department of Energy, National Nuclear Security Administration (NNSA), Office of Material Management and Minimization (NA-23) Reactor Conversion Program. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02–06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. This research used the resources of Argonne National Laboratory's ATLAS facility, which is a DOE Office of Science User Facility. The isotope(s) used in this research were supplied by the United States Department of Energy Office of Science by the Isotope Program in the Office of Nuclear Physics. This work was supported by the U.S. Department of Energy , National Nuclear Security Administration (NNSA), Office of Material Management and Minimization (NA-23) Reactor Conversion Program. The submitted manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02–06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. This research used the resources of Argonne National Laboratory's ATLAS facility, which is a DOE Office of Science User Facility. The isotope(s) used in this research were supplied by the United States Department of Energy Office of Science by the Isotope Program in the Office of Nuclear Physics.
| Funders | Funder number |
|---|---|
| United States Department of Energy Office of Science | |
| U.S. Department of Energy | |
| Office of Science | |
| National Nuclear Security Administration | NA-23 |
| Nuclear Physics | |
| Argonne National Laboratory | DE-AC02–06CH11357 |
Keywords
- Amorphous materials
- High-energy ion irradiation
- Thermal conductivity
- U3Si2 fuel
