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1 results

  • Double Bent Crystal Monochromator for High Resolution Neutron Powder Diffraction

  • P. Mikula, M. Vrána, J. Šaroun, B.S. Seong, W. Woo
  • Journal:
    Powder Diffraction / Volume 28 / Issue S2 / September 2013
    Published online by Cambridge University Press:
    14 November 2013, pp. S351-S359

  • 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 α-Fe, the resolution of the diffraction performance in the vicinity of the scattering angle 2θ S = 90o for the neutron wavelength λ= 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.