• DOI:10.1063/1.2841803
• Corpus ID: 11583800

A W: B4C multilayer phase retarder for broadband polarization analysis of soft x-ray radiation.

@article{Macdonald2008AWB,
  title={A W: B4C multilayer phase retarder for broadband polarization analysis of soft x-ray radiation.},
  author={Michael Macdonald and Franz Schaefers and Ralph Pohl and I. B. Poole and Andreas Gaupp and F. M. Quinn},
  journal={The Review of scientific instruments},
  year={2008},
  volume={79 2 Pt 1},
  pages={
          025108
        }
}

• M. Macdonald, F. Schaefers, +3 authors F. Quinn
• Published 27 February 2008
• Physics
• The Review of scientific instruments

A W: B4C multilayer phase retarder has been designed and characterized which shows a nearly constant phase retardance between 640 and 850 eV photon energies when operated near the Bragg condition. This freestanding transmission multilayer was used successfully to determine, for the first time, the full polarization vector at soft x-ray energies above 600 eV, which was not possible before due to the lack of suitable optical elements. Thus, quantitative polarimetry is now possible at the 2p edges of the magnetic substances Fe, Co, and Ni for the benefit of magnetic circular dichroism spectroscopy employing circularly polarized synchrotron radiation.