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Figure 2
Schematic drawing of the two-crystal monochromator showing the effects of photon beam heating of the first crystal (Smither, 1989BB21). The effect of the thermal bump on the first crystal is to increase the divergence of the X-rays diffracted from the first crystal. The second crystal subsequently does not accept all of the rays simultaneously and overall the two-crystal monochromator throughput is significantly reduced.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 7| Part 2| March 2000| Pages 53-60
doi:10.1107/S0909049500000650
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