Focusing High-Resolution Three-Axis Neutron Diffractometer for Investigations of Special Tasks of Powder Diffractometry

0579665 - ÚJF 2024 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Mikula, Pavol - Ryukhtin, Vasil - Strunz, Pavel - Džugan, J.
Focusing High-Resolution Three-Axis Neutron Diffractometer for Investigations of Special Tasks of Powder Diffractometry.
EPJ Web of Conferences. Vol. 286. Les Ulis: e d p sciences, 2023, č. článku 03001. ISSN 2100-014X.
[European Conference on Neutron Scattering (ECNS 2023). Garching (DE), 20.03.2023-23.03.2023]
Grant CEP: GA MŠMT EF16_013/0001794
Grant ostatní: AV ČR(CZ) StrategieAV21/23
Program: StrategieAV
Výzkumná infrastruktura: CICRR - 90241
Institucionální podpora: RVO:61389005
Klíčová slova: three-axis difractometer * powder diffractometry
Obor OECD: Nuclear related engineering
https://doi.org/10.1051/epjconf/202328603001

Feasibility of focusing high-resolution three-axis diffractometer with the polycrystalline sample between the monochromator and the analyzer was tested for studies of finer effects of powder diffraction lines and for investigations of special tasks of powder diffractometry. The focusing 3-axis diffractometer set-up equipped with bent perfect crystal monochromator and analyzer offers the sensitivity in determination e.g. of strains in polycrystalline materials ε =Δd/d close to 10-5. Together with special tasks of strain/stress studies related namely, to plastic deformation, it permits to study a finer substructure of individual diffraction lines which can appear e.g. in case of polycrystalline alloys where more phases having very close values of the lattice spacing could exist. Resolution properties of the high-resolution diffractometer setting will be documented on several experimental results obtained on unconventional bulk samples.
Trvalý link: https://hdl.handle.net/11104/0348477