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  • Title: Improving the performance of high-resolution X-ray spectrometers with position-sensitive pixel detectors.
    Author: Huotari S, Vankó G, Albergamo F, Ponchut C, Graafsma H, Henriquet C, Verbeni R, Monaco G.
    Journal: J Synchrotron Radiat; 2005 Jul; 12(Pt 4):467-72. PubMed ID: 15968123.
    Abstract:
    A dispersion-compensation method to remove the cube-size effect from the resolution function of diced analyzer crystals using a position-sensitive two-dimensional pixel detector is presented. For demonstration, a resolution of 23 meV was achieved with a spectrometer based on a 1 m Rowland circle and a diced Si(555) analyzer crystal in a near-backscattering geometry, with a Bragg angle of 88.5 degrees . In this geometry the spectrometer equipped with a traditional position-insensitive detector provides a resolution of 190 meV. The dispersion-compensation method thus allows a substantial increase in the resolving power without any loss of signal intensity.
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