期刊
JOURNAL OF SYNCHROTRON RADIATION
卷 12, 期 -, 页码 467-472出版社
BLACKWELL PUBLISHING
DOI: 10.1107/S0909049505010630
关键词
X-ray spectrometers; diced analyzer crystals; position-sensitive detectors
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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