Quasi-elastic neutron scattering studies of collective and correlated tracer diffusion in the systems α′-NbDx and α′-NbHx
Publication type: Journal Article
Publication date: 1991-08-01
General Engineering
Abstract
The technique of neutron polarization analysis has been applied to the problem of separating the coherent and incoherent quasi-elastic scattering from deuterium in α-NbD0.7. The coherent scattering has provided a first experimental test of a theory due to Sinha and Ross (S. K. Sinha and D. K. Ross, Physica B, 149 (1988) 51) with some simplifying assumptions. The coherent quasi-elastic spectra exhibit a behaviour analogous to a De Gennes narrowing, corrected for tracer and mobility correlation factors. The tracer correlations have been studied in more detail by incoherent quasi-elastic neutron scattering from α′-NbH0.79. The results indicate a significant Q and ω dependence of the tracer correlation factor for which the Q dependence in the long time limit indicates an expected periodicity in the Brillouin zone of the interstitial lattice.
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COOK J. C. et al. Quasi-elastic neutron scattering studies of collective and correlated tracer diffusion in the systems α′-NbDx and α′-NbHx // Journal of the Less Common Metals. 1991. Vol. 172-174. pp. 585-594.
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COOK J. C., Richter D., Hempelmann R., Ross D., Zuchner H. Quasi-elastic neutron scattering studies of collective and correlated tracer diffusion in the systems α′-NbDx and α′-NbHx // Journal of the Less Common Metals. 1991. Vol. 172-174. pp. 585-594.
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TY - JOUR
DO - 10.1016/0022-5088(91)90179-8
UR - https://doi.org/10.1016/0022-5088(91)90179-8
TI - Quasi-elastic neutron scattering studies of collective and correlated tracer diffusion in the systems α′-NbDx and α′-NbHx
T2 - Journal of the Less Common Metals
AU - COOK, J. C.
AU - Richter, Dieter
AU - Hempelmann, Rolf
AU - Ross, David
AU - Zuchner, H
PY - 1991
DA - 1991/08/01
PB - Elsevier
SP - 585-594
VL - 172-174
SN - 0022-5088
ER -
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@article{1991_COOK,
author = {J. C. COOK and Dieter Richter and Rolf Hempelmann and David Ross and H Zuchner},
title = {Quasi-elastic neutron scattering studies of collective and correlated tracer diffusion in the systems α′-NbDx and α′-NbHx},
journal = {Journal of the Less Common Metals},
year = {1991},
volume = {172-174},
publisher = {Elsevier},
month = {aug},
url = {https://doi.org/10.1016/0022-5088(91)90179-8},
pages = {585--594},
doi = {10.1016/0022-5088(91)90179-8}
}