Determination of the reflectivity curve of a spherically bent mica crystal used to diagnose X-ray radiation of relativistic laser plasma

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• 作者：M. A. Alkhimova ; S. A. Pikuz ; I. Yu. Skoblev…
• 关键词：X ; ray radiation ; crystal spectrometer ; laser plasma
• 刊名：Bulletin of the Lebedev Physics Institute
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：43
• 期：10
• 页码：291-294
• 全文大小：805 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Russian Library of Science
  
• 出版者：Allerton Press, Inc. distributed exclusively by Springer Science+Business Media LLC
• ISSN：1934-838X
• 卷排序：43

文摘

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.