Double Bent Crystal Monochromator for High Resolution Neutron Powder Diffraction

0421815 - ÚJF 2014 RIV US eng J - Článek v odborném periodiku
Mikula, Pavol - Vrána, Miroslav - Šaroun, Jan - Seong, B. S. - Woo, W.
Double Bent Crystal Monochromator for High Resolution Neutron Powder Diffraction.
Powder Diffraction. Roč. 28, č. 2 (2013), s. 351-359. ISSN 0885-7156. E-ISSN 1945-7413
Grant CEP: GA ČR GAP204/10/0654; GA ČR(CZ) GAP204/12/1360
Institucionální podpora: RVO:61389005
Klíčová slova: neutron diffraction * dispersive monochromator * powder diffraction
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 0.586, rok: 2013

Recent results of focusing and reflectivity properties of the dispersive double-bent-crystal monochromator have shown that it could be succesfully used in high resolution neutron diffraction experiment. By using a standard polycrystalline sample of alpha-Fe, the resolution of the diffraction performance in the vicinity of the scattering angle 2 theta(S)=90 degrees for the neutron wavelength lambda= 0.162 nm was tested in detail. It has been found that for thin (1.3 mm) bent second crystal the angular resolution represented by FWHM of diffraction profiles was 1x10(-3) rad for 211 and 200 reflections and about 3x10(-3) rad for 220 reflection.
Trvalý link: http://hdl.handle.net/11104/0228074