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Proceedings Paper

X-ray phase plate for energy-dispersive and mononchromatic experiments
Author(s): Carlos M. Giles; Cecile Malgrange; Jose Goulon; Christian Vettier; Francois de Bergevin; Andreas K. Freund; Pascal Elleaume; E. Dartyge; Alain Fontaine; C. Giorgetti; S. Pizzini
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Paper Abstract

Diamond crystals are excellent phase plates for the forward diffracted X-rays in the Bragg geometry. The phase-shift between the (sigma) and (pi) components of the transmitted wave varies with the incident angular offset from the center of the reflection profile and can be adjusted to any desired value. Due to the low absorption coefficient of diamond, rather thick crystals (about 1 mm thick) can be used and operated in a region where the variation of the phase-shift with the angle of incidence is not too strong. This property was exploited to obtain a high degree of circular polarization in an energy dispersive absorption spectrometer at LURE (Orsay) where the source is rather broad.

Paper Details

Date Published: 15 February 1994
PDF: 14 pages
Proc. SPIE 2010, X-Ray and Ultraviolet Polarimetry, (15 February 1994); doi: 10.1117/12.168573
Show Author Affiliations
Carlos M. Giles, European Synchrotron Radiation Facility (France)
Cecile Malgrange, Univ. Paris VI et Paris VII (France)
Jose Goulon, European Synchrotron Radiation Facility (France)
Christian Vettier, European Synchrotron Radiation Facility (France)
Francois de Bergevin, European Synchrotron Radiation Facility and Lab. de Cristallographie (France)
Andreas K. Freund, European Synchrotron Radiation Facility (France)
Pascal Elleaume, European Synchrotron Radiation Facility (France)
E. Dartyge, LURE (France)
Alain Fontaine, LURE (France)
C. Giorgetti, LURE (France)
S. Pizzini, LURE (France)

Published in SPIE Proceedings Vol. 2010:
X-Ray and Ultraviolet Polarimetry
Silvano Fineschi, Editor(s)

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