Thermal conductivity degradation due to radiation-induced amorphization in U3Si2: A pilot study

Shipeng Shu; Yinbin Miao; Bei Ye; Kun Mo; Laura Jamison; Sumit Bhattacharya; Aaron Oaks; Abdellatif M. Yacout; Jason Harp; L. Amulya Nimmagadda; Sanjiv Sinha

doi:10.1016/j.jnucmat.2023.154734

Thermal conductivity degradation due to radiation-induced amorphization in U₃Si₂: A pilot study

Shipeng Shu, Yinbin Miao, Bei Ye, Kun Mo, Laura Jamison, Sumit Bhattacharya, Aaron Oaks, Abdellatif M. Yacout, Jason Harp, L. Amulya Nimmagadda, Sanjiv Sinha

Research output: Contribution to journal › Article › peer-review

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 (US)
Article number	154734
Journal	Journal of Nuclear Materials
Volume	587
DOIs	https://doi.org/10.1016/j.jnucmat.2023.154734
State	Published - Dec 15 2023

Keywords

Amorphous materials
High-energy ion irradiation
Thermal conductivity
U3Si2 fuel

ASJC Scopus subject areas

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

Online availability

10.1016/j.jnucmat.2023.154734

Library availability

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Cite this

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title = "Thermal conductivity degradation due to radiation-induced amorphization in U3Si2: A pilot study",

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.",

keywords = "Amorphous materials, High-energy ion irradiation, Thermal conductivity, U3Si2 fuel",

author = "Shipeng Shu and Yinbin Miao and Bei Ye and Kun Mo and Laura Jamison and Sumit Bhattacharya and Aaron Oaks and Yacout, {Abdellatif M.} and Jason Harp and Nimmagadda, {L. Amulya} and Sanjiv Sinha",

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year = "2023",

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day = "15",

doi = "10.1016/j.jnucmat.2023.154734",

language = "English (US)",

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journal = "Journal of Nuclear Materials",

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TY - JOUR

T1 - Thermal conductivity degradation due to radiation-induced amorphization in U3Si2

T2 - A pilot study

AU - Shu, Shipeng

AU - Miao, Yinbin

AU - Ye, Bei

AU - Mo, Kun

AU - Jamison, Laura

AU - Bhattacharya, Sumit

AU - Oaks, Aaron

AU - Yacout, Abdellatif M.

AU - Harp, Jason

AU - Nimmagadda, L. Amulya

AU - Sinha, Sanjiv

PY - 2023/12/15

Y1 - 2023/12/15

N2 - 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.

AB - 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.

KW - Amorphous materials

KW - High-energy ion irradiation

KW - Thermal conductivity

KW - U3Si2 fuel

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