Improving the performance of high-resolution X-ray spectrometers with position-sensitive pixel detectors

S. Huotari, Gy Vankó, F. Albergamo, C. Ponchut, H. Graafsma, C. Henriquet, R. Verbeni, G. Monaco

Research output: Contribution to journalArticle

71 Citations (Scopus)


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°. 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.

Original languageEnglish
Pages (from-to)467-472
Number of pages6
JournalJournal of Synchrotron Radiation
Issue number4
Publication statusPublished - Jul 1 2005



  • Diced analyzer crystals
  • Position-sensitive detectors
  • X-ray spectrometers

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation

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