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Figure 7
Rocking-curve width (FWHM) of (a) the Si 111 reflection for 14.4 keV and (b) the Si 333 reflection for 43.2 keV X-rays as a function of heat load. The heat load was varied in `gap scan' (solid circles) by closing the undulator gaps with the fixed size of the vertical slit of 1 mm and in `slit scans' (open symbols) by opening the vertical slit with the fixed size of the horizontal slit of 2 mm (circles), 1.5 mm (squares) and 1 mm (triangles). The dashed lines show the rocking-curve widths calculated for ideal crystals. The solid lines are to guide the eyes. The lower and upper arrows indicate the data points measured at identical vertical slit sizes of 1.5 and 2 mm, respectively. The insert shows the rocking curve at a heat load of 114 W.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 11| Part 2| February 2004| Pages 132-141
doi:10.1107/S0909049503026785
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