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Evaluation of substructure parameters by peak profile analysis of high-resolution neutron diffraction spectra

Published online by Cambridge University Press:  06 March 2012

P. Lukáš ,
P. Strunz ,
V. Davydov  and
R. Kužel
P. Lukáš
Affiliation:
Nuclear Physics Institute, 250 68 Řež, Czech Republic and Research Centre Řež Ltd., 250 68 Řež, Czech Republic
P. Strunz
Affiliation:
Nuclear Physics Institute, 250 68 Řež, Czech Republic and Research Centre Řež Ltd., 250 68 Řež, Czech Republic
V. Davydov
Affiliation:
Nuclear Physics Institute, 250 68 Řež, Czech Republic and Research Centre Řež Ltd., 250 68 Řež, Czech Republic
R. Kužel
Affiliation:
Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic
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Abstract

The peak profile shape analysis has been preferentially used in the evaluation of X-ray and synchrotron powder diffraction pattern. However, neutron diffraction facilities of new generation frequently offer the instrumental resolution high enough to efficiently study the effects of broadening of neutron diffraction profiles. The present paper describes the procedure for a detailed evaluation of Bragg peak shape based on the method of transformed model fitting (TMF) which has been recently developed particularly for the treatment of neutron diffraction profiles. Microstructure modeling is performed in the reciprocal space and the convolution of the model with the instrumental resolution curve is fitted to the profiles recorded in the diffraction experiment.

Keywords

Neutron diffractionX-ray diffractionprofile analysisdislocation density

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Type
Methods For Residual Stress Analysis
Information
Powder Diffraction , Volume 24 , Supplement S1 , June 2009 , pp. S26 - S30
Copyright
Copyright © Cambridge University Press 2009

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