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Comparison of X‐ray and neutron small‐angle scattering from an Al–Zn alloy
Author(s) -
Gerold V.,
Epperson J. E.,
Gerstenberg K. W.,
Kostorz G.
Publication year - 1978
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188987801393x
Subject(s) - alloy , neutron , vanadium , small angle scattering , scattering , materials science , neutron scattering , atomic number , small angle neutron scattering , consistency (knowledge bases) , solid angle , nuclear data , work (physics) , nuclear physics , analytical chemistry (journal) , physics , optics , chemistry , metallurgy , thermodynamics , detector , mathematics , geometry , chromatography
The normalized integrated small‐angle scattered intensity for Al‐Zn alloys should be independent of whether the measurements are made with X‐rays or neutrons. In order to check this, and thus the correction and standardization processes, the small‐angle scattering from an Al‐5.05 at.% Zn alloy containing GP zones was measured with these two types of radiation. The data were corrected and converted to absolute units with reference to the commonly accepted secondary standards: vanadium for the neutron data and polyethylene (Lupolen) for the X‐ray data. The results are shown to differ by, at best, 6% if reasonable values for the change in atomic volume with alloy composition are taken into account. These findings are compared with those available from the literature, and the consistency is found to be somewhat lacking. Additional careful work is clearly needed to determine if the difficulty is traceable to the data correction or to the conversion to absolute units.