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Optimization of a focusing monochromator for neutron strain-scanning diffractometer

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Abstract.

Comparison of mosaic and elastically deformed crystals as possible candidates for horizontally focusing monochromators at a high-resolution powder diffractometer is presented. The comparison is based on Monte Carlo simulations used to optimize instrument performance for several variants of configuration. The results show that elastically deformed crystals can be optimized better than the mosaic ones in a wide range of wavelengths, except for the case when focusing in momentum space requires a nearly flat monochromator. A set of diffraction profiles measured at a strain-scanning diffractometer configured with an elastically bent Si monochromator is compared with simulations in order to validate the simulations.

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Authors and Affiliations

  1. Nuclear Physics Institute, 25068 Řež, Czech Republic, , , , , , CZ

    J. Šaroun

  2. Institute Laue Langevin, 6 rue Jules Horowitz, BP 156, 38042 Grenoble Cedex 9, France, , , , , , FR

    T. Pirling

  3. National Research Council, Chalk River Laboratories, Chalk River, ON, K0J 1J0, Canada, , , , , , CA

    R.B. Rogge

Authors
  1. J. Šaroun
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  2. T. Pirling
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  3. R.B. Rogge
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Additional information

Received: 19 July 2001 / Accepted: 8 January 2002

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Šaroun, J., Pirling, T. & Rogge, R. Optimization of a focusing monochromator for neutron strain-scanning diffractometer . Appl Phys A 74 (Suppl 1), s1489–s1491 (2002). https://doi.org/10.1007/s003390201433

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  • DOI: https://doi.org/10.1007/s003390201433

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