Analytical model for neutron diffraction peak shifts due to the surface effect

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F13%3A00393349" target="_blank" >RIV/61389005:_____/13:00393349 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1107/S0021889813008194" target="_blank" >http://dx.doi.org/10.1107/S0021889813008194</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1107/S0021889813008194" target="_blank" >10.1107/S0021889813008194</a>

Result language

angličtina

Original language name

Analytical model for neutron diffraction peak shifts due to the surface effect

Original language description

Residual strains measured by neutron diffraction near sample boundaries can be biased by the surface effect as a result of incomplete filling of the instrumental gauge volume. This effect is manifested as anomalous shifts of diffraction lines, which canbe falsely interpreted as a lattice strain unless appropriate data corrections are made. A new analytical model for the surface effect has been developed, which covers a broad variety of instrumental arrangements, including flat mosaic and bent perfect crystal monochromators, narrow slits, and Soller and radial collimators. This model permits the spurious peak shifts to be predicted quantitatively, and also allows the optimum configuration parameters, such as curvature of a focusing monochromator, whichlead to suppression of the surface effect, to be calculated. The model has been thoroughly validated by comparisons with Monte Carlo simulations and experiments on a stress-free calibration sample. Predictions of the model proved to be v

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GAP204%2F10%2F0654" target="_blank" >GAP204/10/0654: Monte Carlo simulations of complex neutron optics systems</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Applied Crystallography

ISSN

0021-8898

e-ISSN

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Volume of the periodical

46

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

628-638

UT code for WoS article

000318943300006

EID of the result in the Scopus database

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