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

Journal Article · · Review of Scientific Instruments
DOI: https://doi.org/10.1063/5.0168059 · OSTI ID:2498326
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [6]; ORCiD logo [4]; ORCiD logo [5];  [5]; ORCiD logo [5]; ORCiD logo [7]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [8]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [5]; ORCiD logo [7];  [4] more »; ORCiD logo [5]; ORCiD logo [8] « less
  1. University of York (United Kingdom); First Light Fusion Ltd., Kidlington (United Kingdom)
  2. University of Rochester, NY (United States); Focused Energy GmbH, Darmstadt (Germany)
  3. Università di Roma “La Sapienza 4,” (Italy)
  4. Université de Bordeaux, Talence (France)
  5. University of Rochester, NY (United States)
  6. Université de Bordeaux, Talence (France); ALBA-CELLS Synchrotron Radiation Facility (Spain)
  7. STFC Rutherford Appleton Laboratory, Didcot (United Kingdom)
  8. University of York (United Kingdom)
  9. Sorbonne Universités (France)

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. Furthermore, 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.

Research Organization:
University of Rochester, NY (United States)
Sponsoring Organization:
EPSRC; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003856
OSTI ID:
2498326
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 95; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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