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Figure 1
Experimental arrangement of the X-ray energy-tunable polarimeter with a phase retarder. The polarizer and analyser crystals are similar channel-cut crystals giving four-bounce 422 symmetric Bragg reflections and are equipped with the Hart–Rodrigues offset mechanism. The phase retarder is a diamond (001)-oriented plate of 313 µm thickness giving 111 asymmetric Laue reflection, the plane of incidence of which is inclined by 45° from the horizontal plane. Two ion chambers were placed upstream and downstream of the sample to measure the absorption spectrum.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 5| Part 3| May 1998| Pages 995-997
https://doi.org/10.1107/S0909049598000855
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