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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1107/S160057671901611X
|2 doi
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|a pubmed25n1021.xml
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|a (NLM)32047407
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|a DE-627
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|e rakwb
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|a eng
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|a Keller, Thomas
|e verfasserin
|4 aut
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|a Neutron Larmor diffraction on powder samples
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 28.09.2020
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © Thomas Keller et al. 2020.
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|a A hitherto unrecognized resolution effect in neutron Larmor diffraction (LD) is reported, resulting from small-angle neutron scattering (SANS) in the sample. Small distortions of the neutron trajectories by SANS give rise to a blurring of the Bragg angles of the order of a few hundredths of a degree, leading to a degradation of the momentum resolution. This effect is negligible for single crystals but may be significant for polycrystalline or powder samples. A procedure is presented to correct the LD data for the parasitic SANS. The latter is accurately determined by the SESANS technique (spin-echo small-angle neutron scattering), which is readily available on Larmor diffractometers. The analysis technique is demonstrated on LD and SESANS data from α-Fe2O3 powder samples. The resulting d-spacing range agrees with experimental data from high-resolution synchrotron radiation powder diffraction on the same sample
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|a Journal Article
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|a neutron Larmor diffraction
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|a neutron spin–echo
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|a polycrystalline samples
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|a powder diffraction
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1 |
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|a Fabrykiewicz, Piotr
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Przeniosło, Radosław
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sosnowska, Izabela
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Keimer, Bernhard
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 53(2020), Pt 1 vom: 01. Feb., Seite 88-98
|w (DE-627)NLM098121561
|x 0021-8898
|7 nnas
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| 773 |
1 |
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|g volume:53
|g year:2020
|g number:Pt 1
|g day:01
|g month:02
|g pages:88-98
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|u http://dx.doi.org/10.1107/S160057671901611X
|3 Volltext
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|d 53
|j 2020
|e Pt 1
|b 01
|c 02
|h 88-98
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