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Figure 3
(a) Schematic view of the optical setup for the OES measurements. The light is collected from the region between dotted lines by a collimator of 0.5 mm diameter, and focused onto the entrance face of an optical fiber, its other end connected to the spectrometer. The collimator is mounted on a movable table so that it is possible to scan along the Y direction. The X-ray beam crosses the attenuator in the Z direction and is represented by the central red circle. The whole setup is placed around the `measurement position' shown in Fig. 1(b)[link]. (b) Image of the plasma in the gas attenuator as seen from the power facing the optical fiber.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 24| Part 6| November 2017| Pages 1195-1208
https://doi.org/10.1107/S1600577517012000
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