An alternative neutron diffractometer performance for strain/stress measurements

0534012 - ÚJF 2021 RIV US eng J - Článek v odborném periodiku
Mikula, Pavol - Šaroun, Jan - Ryukhtin, Vasil - Stammers, James H.
An alternative neutron diffractometer performance for strain/stress measurements.
Powder Diffraction. Roč. 35, č. 3 (2020), s. 185-189. ISSN 0885-7156. E-ISSN 1945-7413
Grant CEP: GA MŠMT LM2015056; GA MŠMT LM2015048
Institucionální podpora: RVO:61389005
Klíčová slova: neutron diffraction * Bragg diffraction optics * strains
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 1.570, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1017/S0885715620000329

An alternative neutron diffractometer performance, which documents the feasibility of using a high-resolution three-axis neutron diffractometer for elastic and plastic deformation studies of bulk metallic polycrystalline samples, is presented. Contrary to the conventional double-axis setting, the suggested alternative consists of an unconventional three-axis set-up employing a bent perfect crystal monochromator and an analyzer with a polycrystalline sample in between. Though the alternative is, for measurements, much more time-consuming, its sensitivity to the change of the diffraction angle of the sample is, however, substantially higher and permits also plastic deformation studies on the basis of analysis of the diffraction line profiles. Moreover, much larger widths (up to 10 mm) of the irradiated gauge volumes can be investigated when just slightly affecting the angular resolution properties of the experimental setting.
Trvalý link: http://hdl.handle.net/11104/0312232