Two-channel high-resolution quasi-monochromatic X-ray imager for Al and Ti plasma - Sorbonne Université Access content directly
Journal Articles Review of Scientific Instruments Year : 2018

Two-channel high-resolution quasi-monochromatic X-ray imager for Al and Ti plasma

Abstract

High-resolution, high-sensitivity X-ray imaging is a real challenge in high-energy density plasma experiments. We present an improved design of the Fresnel ultra high-resolution imager instrument. Using an Ultra-High-Intensity (UHI) laser to generate hot and dense plasma in a small volume of an Al-Ti mixed target provides simultaneous imaging of both Al and Ti X-ray emission. Specifically, the Al Heβ (or Lyβ) and the Ti Heα lines are imaged with a resolution of (2.7 ± 0.3) μm and (5.5 ± 0.3) μm, respectively. It features two transmission Fresnel phase zone plates fabricated on the same substrate, each associated with a multilayer mirror for spectral selection. Their spatial resolution has been measured on the PTB synchrotron radiation facility laboratory at BESSY II and on the EQUINOX laser facility. Results obtained on an UHI experiment highlight the difference of emission zone sizes between Al and Ti lines and the versatility of this instrument.
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Dates and versions

hal-01976041 , version 1 (09-01-2019)

Identifiers

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A. Do, M. Briat, S. Baton, M. Krumrey, L. Lecherbourg, et al.. Two-channel high-resolution quasi-monochromatic X-ray imager for Al and Ti plasma. Review of Scientific Instruments, 2018, 89 (11), pp.113702. ⟨10.1063/1.5042069⟩. ⟨hal-01976041⟩
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