Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

Valdivia, M. P.; Stutman, D.; Stoeckl, C.; Theobald, W.; Collins, G. W.; Bouffetier, V.; Vescovi, M.; Mileham, C.; Begishev, I. A.; Klein, S. R.; Melean, R.; Muller, S.; Zou, J.; Veloso, F.; Casner, A.; Beg, F. N.; Regan, S. P.

doi:10.1063/5.0043655

Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

Conference · Fri Jun 18 00:00:00 EDT 2021 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0043655· OSTI ID:1887901

^[1]; ^[2]; ^[3]; Theobald, W. ^[3]; Collins, G. W. ^[4]; ^[5]; Vescovi, M. ^[6]; Mileham, C. ^[3]; Begishev, I. A. ^[3]; ^[7]; Melean, R. ^[7]; Muller, S. ^[8]; Zou, J. ^[3]; ^[6]; ^[9]; ^[4]; Regan, S. P. ^[3]

Physics and Astronomy Department, Johns Hopkins University 1 , Baltimore, Maryland 21218, USA; UCSD
Physics and Astronomy Department, Johns Hopkins University 1 , Baltimore, Maryland 21218, USA
Laboratory for Laser Energetics, University of Rochester 2 , Rochester, New York 14623, USA
Center for Energy Research, University of California San Diego 3 , San Diego, California 92093, USA
Université de Bordeaux-CNRS-CEA, Centre Lasers Intenses et Applications, UMR5107 4 , F-33405 Talence, France
Pontificia Universidad Catolica de Chile 5 , Casilla 306, Santiago, Chile
University of Michigan 6 , Ann Arbor, Michigan 48109, USA
General Atomics, Inertial Fusion Technology 7 , San Diego, California 92921, USA
CEA-CESTA 8 , 15 avenue des Sablières, CS 60001, 33116 Le Barp CEDEX, France

Talbot-Lau x-ray interferometry has been implemented to map electron density gradients in High Energy Density Physics (HEDP) experiments. X-ray backlighter targets have been evaluated for Talbot-Lau X-ray Deflectometry (TXD). Cu foils, wires, and sphere targets have been irradiated by 10–150 J, 8–30 ps laser pulses, while two pulsed-power generators (∼350 kA, 350 ns and ∼200 kA, 150 ns) have driven Cu wire, hybrid, and laser-cut x-pinches. A plasma ablation front generated by the Omega EP laser was imaged for the first time through TXD for densities >1023 cm−3. Backlighter optimization in combination with x-ray CCD, image plates, and x-ray film has been assessed in terms of spatial resolution and interferometer contrast for accurate plasma characterization through TXD in pulsed-power and high-intensity laser environments. The results obtained thus far demonstrate the potential of TXD as a powerful diagnostic for HEDP.

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Research Organization:: UCSD

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

DOE Contract Number:: NA0004028

OSTI ID:: 1887901

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 6 Vol. 92; ISSN 0034-6748

Country of Publication:: United States

Language:: English

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Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

Journal Article · Fri Jun 18 00:00:00 EDT 2021 · Review of Scientific Instruments · OSTI ID:1837686

Talbot-Lau x-ray deflectometer: Refraction-based HEDP imaging diagnostic

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