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Figure 1
Schematic of the experimental setup, consisting of a gas cell of diameter 2R and effective length L, filled with argon gas to a pressure P. The cell was capped off by two 50 µm-thick Kapton windows W1 and W2 each inclined by 45° to the direction of an X-ray two-bunch FEL beam coming from the left and being attenuated. The X-ray scattering off the Kapton windows was measured as the intensities of p1 and p2 by two fast diodes D1 and D2 positioned perpendicular to the beam and each connected to a different channel of a fast digitizer.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 1| January 2018| Pages 145-150
https://doi.org/10.1107/S1600577517014278
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