A helicity resolving soft X-ray emission spectrometer for studying magnetic circular dichroism with laboratory excitation sources

We have constructed a helicity resolving soft X-ray emission (SXE) spectrometer. By using the effect of magnetic resonant (anomalous) scattering from an iron interface we achieved helicity sensitivity in the wavelength region around the L-edge. The instrument features a magnetic Codling-slit that re...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1996-07, Vol.376 (2), p.291-297
Main Authors: Duda, L.-C, Kuiper, P, Mancini, D.C, Englund, C.-J, Nordgren, J
Format: Article
Language:English
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Summary:We have constructed a helicity resolving soft X-ray emission (SXE) spectrometer. By using the effect of magnetic resonant (anomalous) scattering from an iron interface we achieved helicity sensitivity in the wavelength region around the L-edge. The instrument features a magnetic Codling-slit that replaces the ordinary entrance slit of an already existent SXE grating-spectrometer of proven design retaining high efficiency. A calibration method for the spectral response-curve of the instrument is devised, using the output of circularly polarized X-rays of a storage ring bending magnet. Once the instrument has been calibrated, helicity resolved SXE spectroscopy allows one to study magnetic samples using a laboratory excitation source, e.g. an electron gun.
ISSN:0168-9002
1872-9576
DOI:10.1016/0168-9002(96)00263-X