Incoherent quasielastic neutron scattering study of hydrogen diffusion in thorium-zirconium hydrides

Kurt A. Terrani; Eugene Mamontov; Mehdi Balooch; Donald R. Olander

doi:10.1016/j.jnucmat.2010.04.003

Incoherent quasielastic neutron scattering study of hydrogen diffusion in thorium-zirconium hydrides

Kurt A. Terrani, Eugene Mamontov, Mehdi Balooch, Donald R. Olander

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

6 Scopus citations

Abstract

Monophase thorium-zirconium hydrides (ThZr₂H_x) have been fabricated starting from a metallic alloy and the hydrogen stoichiometry determined by X-ray diffraction. Incoherent Quasielastic Neutron Scattering (IQNS) on the hydrides was conducted over the temperature range 650-750 K at the Backscattering Silicon Spectrometer (BASIS) at the Spallation Neutron Source (SNS) at ORNL. The isotropic Chudley-Elliott model was utilized to analyze the quasielastic linewidth broadening data as function of momentum transfer. The diffusion coefficient and average jump distance of hydrogen atoms in ThZr ₂H_5.6 and ThZr₂H_6.2 were extracted from the measurements.

Original language	English
Pages (from-to)	91-97
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	401
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2010.04.003
State	Published - Mar 2011
Externally published	Yes

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@article{22a0f83271844d00880cca497e2d4c59,

title = "Incoherent quasielastic neutron scattering study of hydrogen diffusion in thorium-zirconium hydrides",

abstract = "Monophase thorium-zirconium hydrides (ThZr2Hx) have been fabricated starting from a metallic alloy and the hydrogen stoichiometry determined by X-ray diffraction. Incoherent Quasielastic Neutron Scattering (IQNS) on the hydrides was conducted over the temperature range 650-750 K at the Backscattering Silicon Spectrometer (BASIS) at the Spallation Neutron Source (SNS) at ORNL. The isotropic Chudley-Elliott model was utilized to analyze the quasielastic linewidth broadening data as function of momentum transfer. The diffusion coefficient and average jump distance of hydrogen atoms in ThZr 2H5.6 and ThZr2H6.2 were extracted from the measurements.",

author = "Terrani, {Kurt A.} and Eugene Mamontov and Mehdi Balooch and Olander, {Donald R.}",

year = "2011",

month = mar,

doi = "10.1016/j.jnucmat.2010.04.003",

language = "English",

volume = "401",

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journal = "Journal of Nuclear Materials",

issn = "0022-3115",

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number = "1-3",

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T1 - Incoherent quasielastic neutron scattering study of hydrogen diffusion in thorium-zirconium hydrides

AU - Terrani, Kurt A.

AU - Mamontov, Eugene

AU - Balooch, Mehdi

AU - Olander, Donald R.

PY - 2011/3

Y1 - 2011/3

N2 - Monophase thorium-zirconium hydrides (ThZr2Hx) have been fabricated starting from a metallic alloy and the hydrogen stoichiometry determined by X-ray diffraction. Incoherent Quasielastic Neutron Scattering (IQNS) on the hydrides was conducted over the temperature range 650-750 K at the Backscattering Silicon Spectrometer (BASIS) at the Spallation Neutron Source (SNS) at ORNL. The isotropic Chudley-Elliott model was utilized to analyze the quasielastic linewidth broadening data as function of momentum transfer. The diffusion coefficient and average jump distance of hydrogen atoms in ThZr 2H5.6 and ThZr2H6.2 were extracted from the measurements.

AB - Monophase thorium-zirconium hydrides (ThZr2Hx) have been fabricated starting from a metallic alloy and the hydrogen stoichiometry determined by X-ray diffraction. Incoherent Quasielastic Neutron Scattering (IQNS) on the hydrides was conducted over the temperature range 650-750 K at the Backscattering Silicon Spectrometer (BASIS) at the Spallation Neutron Source (SNS) at ORNL. The isotropic Chudley-Elliott model was utilized to analyze the quasielastic linewidth broadening data as function of momentum transfer. The diffusion coefficient and average jump distance of hydrogen atoms in ThZr 2H5.6 and ThZr2H6.2 were extracted from the measurements.

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U2 - 10.1016/j.jnucmat.2010.04.003

DO - 10.1016/j.jnucmat.2010.04.003

M3 - Article

AN - SCOPUS:84856288816

SN - 0022-3115

VL - 401

SP - 91

EP - 97

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

Incoherent quasielastic neutron scattering study of hydrogen diffusion in thorium-zirconium hydrides

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