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Figure 1
(Top) Thermal length expansion of a 1 mm Si crystal relative to room temperature (squares) fitted by a T2 polynomial (red line). The coloured ellipses show examples of Tp and Tb corresponding to low-, medium- and high-power regimes (green, yellow and red, respectively). Tze shows the temperature of minimum thermal expansion. (Bottom) Schematic representation of crystal deformation, switching from concave to flat, and to convex, when power is increased.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 3| May 2024| Pages 478-484
https://doi.org/10.1107/S1600577524002133
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