Abstract
A method for determining the crystal reflectivity curve, based on the use of a broadband X-ray source and an additional spectrometer with preliminarily measured characteristics is proposed. Such a technique does not allow determination of the absolute reflectivity, but makes it possible to measure the dependence of its relative values on the wavelength. Using X-ray radiation of relativistic dense laser plasma, the reflection curve of a spherically bent mica crystal is measured in the range of 6.7–8.7 Å. The obtained reflectivity curve is used to correctly interpret X-ray spectra of dense plasma generated during the interaction a petawatt laser pulse with solid targets.
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Original Russian Text © M.A. Alkhimova, S.A. Pikuz, I.Yu. Skoblev, A.Ya. Faenov, 2016, published in Kratkie Soobshcheniya po Fizike, 2016, Vol. 43, No. 10, pp. 3–8.
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Alkhimova, M.A., Pikuz, S.A., Skoblev, I.Y. et al. Determination of the reflectivity curve of a spherically bent mica crystal used to diagnose X-ray radiation of relativistic laser plasma. Bull. Lebedev Phys. Inst. 43, 291–294 (2016). https://doi.org/10.3103/S1068335616100018
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DOI: https://doi.org/10.3103/S1068335616100018