High q-resolution neutron scattering technique using triple-axis spectrometers

Guangyong Xu; P. M. Gehring; V. J. Ghosh; G. Shirane

High q-resolution neutron scattering technique using triple-axis spectrometers

Other Condensed Matter 2007-05-23 v1 Materials Science

Authors: Guangyong Xu , P. M. Gehring , V. J. Ghosh , G. Shirane

Abstract

We present a new technique which brings a substantial increase of the wave-vector $q$ -resolution of triple-axis-spectrometers by matching the measurement wave-vector $q$ to the reflection $\tau_a$ of a perfect crystal analyzer. A relative Bragg width of $\delta/Q \sim 10^{-4}$ can be achieved with reasonable collimation settings. This technique is very useful in measuring small structural changes and line broadenings that can not be accurately measured with conventional set-ups, while still keeping all the strengths of a triple-axis-spectrometer.

Keywords

diffraction gratings x-ray imaging and diffraction neutron detection

Cite

@article{arxiv.cond-mat/0401439,
  title  = {High q-resolution neutron scattering technique using triple-axis spectrometers},
  author = {Guangyong Xu and P. M. Gehring and V. J. Ghosh and G. Shirane},
  journal= {arXiv preprint arXiv:cond-mat/0401439},
  year   = {2007}
}

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pdf file only, submitted to Acta. Crystal. A

High q-resolution neutron scattering technique using triple-axis spectrometers

Abstract

Keywords

Cite

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