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Dostęp zamkniętyNeutron Larmor diffraction on powder samples
| cris.lastimport.scopus | 2024-02-12T19:45:10Z |
| dc.abstract.en | 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. |
| dc.affiliation | Uniwersytet Warszawski |
| dc.contributor.author | Fabrykiewicz, Piotr |
| dc.contributor.author | Przeniosło, Radosław |
| dc.contributor.author | Sosnowska, Izabela |
| dc.contributor.author | Keller, Thomas |
| dc.contributor.author | Keimer, Bernhard |
| dc.date.accessioned | 2024-01-25T13:47:12Z |
| dc.date.available | 2024-01-25T13:47:12Z |
| dc.date.issued | 2020 |
| dc.description.finance | Publikacja bezkosztowa |
| dc.description.volume | 53 |
| dc.identifier.doi | 10.1107/S160057671901611X |
| dc.identifier.issn | 0021-8898 |
| dc.identifier.uri | https://repozytorium.uw.edu.pl//handle/item/113532 |
| dc.language | eng |
| dc.pbn.affiliation | physical sciences |
| dc.relation.ispartof | Journal of Applied Crystallography |
| dc.relation.pages | 88-98 |
| dc.rights | ClosedAccess |
| dc.sciencecloud | nosend |
| dc.subject.en | neutron Larmor diffraction |
| dc.subject.en | neutron spin–echo |
| dc.subject.en | polycrystalline samples |
| dc.subject.en | powder diffraction. |
| dc.title | Neutron Larmor diffraction on powder samples |
| dc.type | JournalArticle |
| dspace.entity.type | Publication |