Observation of Oxygen Frenkel Disorder in Uranium Dioxide above 2000 K by Use of Neutron-Scattering Techniques

Kurt Nørgaard Clausen; W. Hayes; J E. Macdonald; R. Osborn; M. T. Hutchings

doi:10.1103/PhysRevLett.52.1238

Observation of Oxygen Frenkel Disorder in Uranium Dioxide above 2000 K by Use of Neutron-Scattering Techniques

Kurt Nørgaard Clausen, W. Hayes, J E. Macdonald, R. Osborn, M. T. Hutchings

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Abstract

Diffraction and coherent diffuse quasielastic scattering of neutrons have been used to investigate Frenkel disorder of the oxygen sublattice in single crystals of stoichiometric UO2. Measurements were made up to 2900 K using a special high-temperature furnace. The results provide the first direct evidence for the occurrence of Frenkel disorder in UO2 and enable estimates of the defect concentration and activation energy to be made.

Original language	English
Journal	Physical Review Letters
Volume	52
Issue number	14
Pages (from-to)	1238-1241
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.52.1238
Publication status	Published - 1984

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title = "Observation of Oxygen Frenkel Disorder in Uranium Dioxide above 2000 K by Use of Neutron-Scattering Techniques",

abstract = "Diffraction and coherent diffuse quasielastic scattering of neutrons have been used to investigate Frenkel disorder of the oxygen sublattice in single crystals of stoichiometric UO2. Measurements were made up to 2900 K using a special high-temperature furnace. The results provide the first direct evidence for the occurrence of Frenkel disorder in UO2 and enable estimates of the defect concentration and activation energy to be made.",

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AU - Clausen, Kurt Nørgaard

AU - Hayes, W.

AU - Macdonald, J E.

AU - Osborn, R.

AU - Hutchings, M. T.

PY - 1984

Y1 - 1984

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AB - Diffraction and coherent diffuse quasielastic scattering of neutrons have been used to investigate Frenkel disorder of the oxygen sublattice in single crystals of stoichiometric UO2. Measurements were made up to 2900 K using a special high-temperature furnace. The results provide the first direct evidence for the occurrence of Frenkel disorder in UO2 and enable estimates of the defect concentration and activation energy to be made.

U2 - 10.1103/PhysRevLett.52.1238

DO - 10.1103/PhysRevLett.52.1238

M3 - Journal article

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EP - 1241

JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

ER -

Observation of Oxygen Frenkel Disorder in Uranium Dioxide above 2000 K by Use of Neutron-Scattering Techniques

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