Femtosecond high-resolution hard X-ray spectroscopy using reflection zone plates.

  title={Femtosecond high-resolution hard X-ray spectroscopy using reflection zone plates.},
  author={Heike L{\"o}chel and Christoph Braig and Maria Brzhezinskaya and Frank Siewert and Peter Baumg{\"a}rtel and Alexander Firsov and Alexei Erko},
  journal={Optics express},
  volume={23 7},
An off-axis total external reflection zone plate is applied to wavelength-dispersive X-ray spectrometry in the range from 7.8 keV to 9.0 keV. The resolving power E/ΔE of up to 1.1 × 10(2), demonstrated in a synchrotron proof-of-concept experiment, competes well with existing energy-dispersive instruments in this spectral range. In conjunction with the detection efficiency of (2.2 ± 0.6)%, providing a fairly constant count rate across the 1.2 keV band, the temporal pulse elongation to no more… CONTINUE READING

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