Structural study of large scale KDP crystals using high energy x-ray diffraction

Audrey Surmin; François Guillet; Sébastien Lambert; David Damiani; Matthieu Pommiès

doi:10.1117/12.638561

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7 February 2006 Structural study of large scale KDP crystals using high energy X-ray diffraction

Audrey Surmin, François Guillet, Sébastien Lambert, David Damiani, Matthieu Pommiès

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Proceedings Volume 5991, Laser-Induced Damage in Optical Materials: 2005; 59911W (2006) https://doi.org/10.1117/12.638561
Event: Boulder Damage Symposium XXXVII: Annual Symposium on Optical Materials for High Power Lasers, 2005, Boulder, CO, United States

Abstract

X-ray diffraction is a non destructive technique used in order to characterize defects in the single crystal. Unfortunately, this analysis can not be performed throughout the whole volume on thick KH₂PO₄ (KDP) crystals used in the high power lasers systems like NIF and LMJ, these crystals having a thickness close to 10 mm. Considering the usual energy range radiation used for X-ray diffraction and topography (20-30 keV), the beam is rapidly absorbed by the material. However, this problem can be solved by the use of high energy X-ray radiation in order to analyse the complete volume of crystal. The principle of this device will be exposed and preliminary results are shown along with corresponding optical measurements.

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Audrey Surmin, François Guillet, Sébastien Lambert, David Damiani, and Matthieu Pommiès "Structural study of large scale KDP crystals using high energy X-ray diffraction", Proc. SPIE 5991, Laser-Induced Damage in Optical Materials: 2005, 59911W (7 February 2006); https://doi.org/10.1117/12.638561

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