In-pile irradiation induced defects and the effect on thermal diffusivity of MgO

Donald T. Moore; Cynthia Adkins; Brandon D. Miller; Pavel G. Medvedev; Juan C. Nino

doi:10.1016/j.jnucmat.2012.11.006

In-pile irradiation induced defects and the effect on thermal diffusivity of MgO

Donald T. Moore
, Cynthia Adkins
, Brandon D. Miller
, Pavel G. Medvedev
, Juan C. Nino

Materials and Fuels Complex

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

13 Scopus citations

Abstract

The effects of neutron irradiation temperature and dose on thermal diffusivity are investigated by comparing non-irradiated and in-pile irradiated MgO samples. MgO pellets were irradiated in-pile of the Advanced Test Reactor at Idaho National Laboratory. Samples were irradiated at 623 and 973 K to fast neutron fluences of ∼1 × 10²⁵ (1.5 dpa) and ∼2 × 10²⁵n/m² (3 dpa). Post irradiation examination included X-ray diffraction, scanning electron microscopy, laser flash thermal diffusivity, and transmission electron microscopy. Neutron irradiation of MgO causes a significant reduction in the thermal diffusivity (46%-72% at room temperature) due to irradiation-induced defects. The radiation induced thermophysical and structural evolution of MgO is reported.

Original language	English
Pages (from-to)	90-96
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	434
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2012.11.006
State	Published - 2013

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10.1016/j.jnucmat.2012.11.006

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@article{98f29472d61b429fa8cd0f0a18423c54,

title = "In-pile irradiation induced defects and the effect on thermal diffusivity of MgO",

abstract = "The effects of neutron irradiation temperature and dose on thermal diffusivity are investigated by comparing non-irradiated and in-pile irradiated MgO samples. MgO pellets were irradiated in-pile of the Advanced Test Reactor at Idaho National Laboratory. Samples were irradiated at 623 and 973 K to fast neutron fluences of ∼1 × 1025 (1.5 dpa) and ∼2 × 1025n/m2 (3 dpa). Post irradiation examination included X-ray diffraction, scanning electron microscopy, laser flash thermal diffusivity, and transmission electron microscopy. Neutron irradiation of MgO causes a significant reduction in the thermal diffusivity (46\%-72\% at room temperature) due to irradiation-induced defects. The radiation induced thermophysical and structural evolution of MgO is reported.",

author = "Moore, \{Donald T.\} and Cynthia Adkins and Miller, \{Brandon D.\} and Medvedev, \{Pavel G.\} and Nino, \{Juan C.\}",

note = "Funding Information: The authors would like to thank Todd Allen, James Cole, Randall Fielding, Bryan Forsmann, Collin Knight, James Madden, Thomas O{\textquoteright}Holleran, Mary Catherine Thelen, and others at Idaho National Lab for their contributions to the project. Work supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517, as part of an ATR National Scientific User Facility experiment. ",

year = "2013",

doi = "10.1016/j.jnucmat.2012.11.006",

language = "English",

volume = "434",

pages = "90--96",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - In-pile irradiation induced defects and the effect on thermal diffusivity of MgO

AU - Moore, Donald T.

AU - Adkins, Cynthia

AU - Miller, Brandon D.

AU - Medvedev, Pavel G.

AU - Nino, Juan C.

N1 - Funding Information: The authors would like to thank Todd Allen, James Cole, Randall Fielding, Bryan Forsmann, Collin Knight, James Madden, Thomas O’Holleran, Mary Catherine Thelen, and others at Idaho National Lab for their contributions to the project. Work supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517, as part of an ATR National Scientific User Facility experiment.

PY - 2013

Y1 - 2013

N2 - The effects of neutron irradiation temperature and dose on thermal diffusivity are investigated by comparing non-irradiated and in-pile irradiated MgO samples. MgO pellets were irradiated in-pile of the Advanced Test Reactor at Idaho National Laboratory. Samples were irradiated at 623 and 973 K to fast neutron fluences of ∼1 × 1025 (1.5 dpa) and ∼2 × 1025n/m2 (3 dpa). Post irradiation examination included X-ray diffraction, scanning electron microscopy, laser flash thermal diffusivity, and transmission electron microscopy. Neutron irradiation of MgO causes a significant reduction in the thermal diffusivity (46%-72% at room temperature) due to irradiation-induced defects. The radiation induced thermophysical and structural evolution of MgO is reported.

AB - The effects of neutron irradiation temperature and dose on thermal diffusivity are investigated by comparing non-irradiated and in-pile irradiated MgO samples. MgO pellets were irradiated in-pile of the Advanced Test Reactor at Idaho National Laboratory. Samples were irradiated at 623 and 973 K to fast neutron fluences of ∼1 × 1025 (1.5 dpa) and ∼2 × 1025n/m2 (3 dpa). Post irradiation examination included X-ray diffraction, scanning electron microscopy, laser flash thermal diffusivity, and transmission electron microscopy. Neutron irradiation of MgO causes a significant reduction in the thermal diffusivity (46%-72% at room temperature) due to irradiation-induced defects. The radiation induced thermophysical and structural evolution of MgO is reported.

UR - https://www.scopus.com/pages/publications/84871873820

U2 - 10.1016/j.jnucmat.2012.11.006

DO - 10.1016/j.jnucmat.2012.11.006

M3 - Article

AN - SCOPUS:84871873820

SN - 0022-3115

VL - 434

SP - 90

EP - 96

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

In-pile irradiation induced defects and the effect on thermal diffusivity of MgO

Abstract

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