Journal ArticleDOI
X‐ray polarimetry with phase plates
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TLDR
In this paper, diamond crystals were used as quarterwave plates and half-wave plates (HWPs) to produce and completely analyze circular and vertical linear polarization of monochromatic x rays from an undulator source (ID10) at the European Synchrotron Radiation Facility.Abstract:
Diamond crystals were used as quarter‐wave plates (QWPs) and half‐wave plates (HWPs) to produce and completely analyze circular and vertical linear polarization of monochromatic x rays from an undulator source (ID10) at the European Synchrotron Radiation Facility. The horizontal linear polarization state of the forward diffracted beam in the Bragg or Laue geometry was efficiently converted into circular (99%) and vertical polarization (97%) by tuning the crystal conveniently away from the Bragg peak. Also, the combination of two QWPs was used to obtain linear polarization at any desired azimuth (e.g., 95% at 45°). Further, the second QWP and the linear polarimeter were used to completely characterize the polarization state of the circularly polarized beam after the first QWP. High efficiencies at QWPs and HWPs and high transmitted intensity (40%) were achieved with the diamond crystal in the asymmetric Laue geometry.read more
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Journal ArticleDOI
ID20: a beamline for magnetic and resonant X-ray scattering investigations under extreme conditions.
Luigi Paolasini,Carsten Detlefs,Claudio Mazzoli,Stuart Wilkins,Pascale P. Deen,A. Bombardi,N. Kernavanois,F. de Bergevin,Flora Yakhou,Jean-Paul Valade,I. Breslavetz,A. Fondacaro,G. Pepellin,P. Bernard +13 more
TL;DR: A new experimental station at ESRF beamline ID20 is presented which allows magnetic and resonant X-ray scattering experiments in the energy range 3-25 keV to be performed under extreme conditions.
Journal ArticleDOI
Hard x-ray emission spectroscopy: a powerful tool for the characterization of magnetic semiconductors
Mauro Rovezzi,Pieter Glatzel +1 more
TL;DR: In this article, the authors focus on the hard part of the x-ray spectrum (above 3 keV) in order to demonstrate a powerful element and orbital-selective characterization tool in the study of bulk electronic structure.
Journal ArticleDOI
Hard x-ray emission spectroscopy: a powerful tool for the characterization of magnetic semiconductors
Mauro Rovezzi,Pieter Glatzel +1 more
TL;DR: In this paper, the authors focus on the hard part of the x-ray spectrum (above 3 keV) in order to demonstrate a powerful element and orbital-selective characterization tool in the study of bulk electronic structure.
Journal ArticleDOI
Determination of high-purity polarization state of X-rays
B. Marx,Ingo Uschmann,Ingo Uschmann,S. Höfer,R. Lötzsch,O. Wehrhan,E. Förster,E. Förster,Malte C. Kaluza,Malte C. Kaluza,Thomas Stöhlker,Holger Gies,Holger Gies,Carsten Detlefs,Thomas Roth,J. Härtwig,Gerhard G. Paulus,Gerhard G. Paulus +17 more
TL;DR: In this paper, the authors reported the measurement of the highest purity of polarization of X-rays to date by combining a brilliant undulator source with an X-ray polarimeter, which is composed of a polarizer and an analyzer, each based on four reflections at channel-cut crystals with a Bragg angle very close to 45°.
Proceedings ArticleDOI
Powerful scriptable ray tracing package xrt
TL;DR: In this article, the authors present an open source ray tracing tool that offers several useful features in graphical presentation, material properties, advanced calculations of synchrotron sources, implementation of diffractive and refractive elements, complex (also closed) surfaces and multiprocessing.
References
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Journal ArticleDOI
An X-Ray Phase Plate Using Bragg-Case Diffraction
TL;DR: In this paper, an X-ray phase plate using two-beam Bragg case diffraction was proposed and the variation of the polarization state of the transmitted (forward-diffracted) beam through the incident angle was observed.
Journal ArticleDOI
Special multipole wiggler design producing circularly polarized synchrotron radiation
TL;DR: In this article, a planar multipole wiggler was proposed to produce both linearly and circularly polarized synchrotron radiation with a quasi sinusoidal magnetic field distribution.
Journal ArticleDOI
Energy-Dispersive Phase Plate for Magnetic Circular Dichroism Experiments in the X-ray Range
C. Giles,C. Malgrange,José Goulon,F. de Bergevin,C. Vettier,E. Dartyge,A. Fontaine,Christine Giorgetti,Stefania Pizzini +8 more
TL;DR: A 220 diamond phase plate was combined with an energy-dispersive absorption spectrometer to convert linearly polarized X-rays into circularly polarized photons and to detect circular magnetic X-ray dichroism (CMXD) from ferromagnetic samples as mentioned in this paper.