High-Resolution Three-Axis Neutron Diffractometer for Microstructure Investigations of Polycrystalline Materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00572671" target="_blank" >RIV/61389005:_____/23:00572671 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.prostr.2022.12.245" target="_blank" >https://doi.org/10.1016/j.prostr.2022.12.245</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.prostr.2022.12.245" target="_blank" >10.1016/j.prostr.2022.12.245</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-Resolution Three-Axis Neutron Diffractometer for Microstructure Investigations of Polycrystalline Materials

Popis výsledku v původním jazyce

Recently, focusing 3-axis diffractometer set-up equipped with the bent perfect crystal (BPC) monochromator and analyzer which has offered the sensitivity in determination of strains Δd/d < 10-4in polycrystalline materials, has been introduced. The resolution determined by FWHM of the diffraction profiles is about one order of magnitude higher with respect to that of conventional 2-axis neutron strain/stress scanners. Therefore, the new set-up also offers possibility of line profile analysis for relatively large irradiated gauge volumes and reasonable counting times, because the 3-axis set-up exploits focusing in real and momentum space simultaneously. As it is demonstrated on several samples, the 3-axis diffractometer can be successfully used in the strain/stress measurements on samples exposed to an external load, studies of diffraction profile affected by plastic deformation, determination of phases having very close values of the lattice spacings etc. The analysis is carried out by rocking the BPC analyzer and the neutron signal is registered by a point detector.

Název v anglickém jazyce

High-Resolution Three-Axis Neutron Diffractometer for Microstructure Investigations of Polycrystalline Materials

Popis výsledku anglicky

Recently, focusing 3-axis diffractometer set-up equipped with the bent perfect crystal (BPC) monochromator and analyzer which has offered the sensitivity in determination of strains Δd/d < 10-4in polycrystalline materials, has been introduced. The resolution determined by FWHM of the diffraction profiles is about one order of magnitude higher with respect to that of conventional 2-axis neutron strain/stress scanners. Therefore, the new set-up also offers possibility of line profile analysis for relatively large irradiated gauge volumes and reasonable counting times, because the 3-axis set-up exploits focusing in real and momentum space simultaneously. As it is demonstrated on several samples, the 3-axis diffractometer can be successfully used in the strain/stress measurements on samples exposed to an external load, studies of diffraction profile affected by plastic deformation, determination of phases having very close values of the lattice spacings etc. The analysis is carried out by rocking the BPC analyzer and the neutron signal is registered by a point detector.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LM2023057" target="_blank" >LM2023057: Evropský spalační zdroj – účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Structural Integrity

ISBN

—

ISSN

2452-3216

e-ISSN

—

Počet stran výsledku

5

Strana od-do

119-123

Název nakladatele

Elsevier B. V.

Místo vydání

Amsterdam

Místo konání akce

Brno

Datum konání akce

12. 9. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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