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X-ray phase-contrast imaging of strong shocks on OMEGA EP. | LitMetric

X-ray phase-contrast imaging of strong shocks on OMEGA EP.

Rev Sci Instrum

York Plasma Institute, School of Physics, Engineering and Technology, University of York, York YO10 5DD, United Kingdom.

Published: November 2024

AI Article Synopsis

Article Abstract

The ongoing improvement in laser technology and target fabrication is opening new possibilities for diagnostic development. An example is x-ray phase-contrast imaging (XPCI), which serves as an advanced x-ray imaging diagnostic in laser-driven experiments. In this work, we present the results of the XPCI platform that was developed at the OMEGA EP Laser-Facility to study multi-Mbar single and double shocks produced using a kilojoule laser driver. Two-dimensional radiation-hydrodynamic simulations agree well with the shock progression and the spherical curvature of the shock fronts. It is demonstrated that XPCI is an excellent method to determine with high accuracy the front position of a trailing shock wave propagating through an expanding CH plasma that was heated by a precursor Mbar shock wave. The interaction between the rarefaction wave and the shock wave results in a clear signature in the radiograph that is well reproduced by radiation-hydrodynamic simulations.

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Source
http://dx.doi.org/10.1063/5.0168059DOI Listing

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