Advanced high resolution x-ray diagnostic for HEDP experiments

Faenov, A. Ya.; Pikuz, T. A.; Mabey, P.; Albertazzi, B.; Michel, Th.; Rigon, G.; Pikuz, S. A.; Buzmakov, A. V.; Makarov, Sergey; Ozaki, Norimasa; Matsuoka, Takeshi; Katagiri, Kento; Miyanishi, Kohei; Takahashi, Koji; Tanaka, K. A.; Inubushi, Yuichi; Togashi, Tadashi; Yabuuchi, T.; Yabashi, Makina; Casner, A.; Kodama, R.; Kœnig, M.

doi:10.1038/s41598-018-34717-9

Cited by 21 publications

(10 citation statements)

References 41 publications

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“…The imaging system consists of a collimated x-ray beam and a LiF crystal. When irradiated by x-rays the LiF creates colour centres (CCs) that can be read out using a conventional confocal fluorescent microscope 23 . Here, the XFEL beam consists of a short pulse (less than 10 fs) x-ray burst centred on a 7 keV peak, with a ~30 eV full width at half maximum (FWHM) 35 .…”

Section: Methodsmentioning

confidence: 99%

“…Here, we show results from an experiment where a laserproduced Rayleigh-Taylor unstable plasma flow evolves towards a possibly turbulent state. The main diagnostic, an x-ray radiography platform, coupling an x-ray free-electron laser (XFEL) and a lithium-fluoride crystal (LiF) 22,23 , allowed us to take timeresolved images with sub-micron spatial resolution over a large field of view (>1 mm 2 corresponding to the XFEL beam size). From the obtained radiographs, we extract intensity spatial spectra, which can be associated to velocity spectra.…”

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confidence: 99%

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Micron-scale phenomena observed in a turbulent laser-produced plasma

et al. 2021

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Turbulence is ubiquitous in the universe and in fluid dynamics. It influences a wide range of high energy density systems, from inertial confinement fusion to astrophysical-object evolution. Understanding this phenomenon is crucial, however, due to limitations in experimental and numerical methods in plasma systems, a complete description of the turbulent spectrum is still lacking. Here, we present the measurement of a turbulent spectrum down to micron scale in a laser-plasma experiment. We use an experimental platform, which couples a high power optical laser, an x-ray free-electron laser and a lithium fluoride crystal, to study the dynamics of a plasma flow with micrometric resolution (~1μm) over a large field of view (>1 mm2). After the evolution of a Rayleigh–Taylor unstable system, we obtain spectra, which are overall consistent with existing turbulent theory, but present unexpected features. This work paves the way towards a better understanding of numerous systems, as it allows the direct comparison of experimental results, theory and numerical simulations.

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Section: Methodsmentioning

confidence: 99%

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Micron-scale phenomena observed in a turbulent laser-produced plasma

et al. 2021

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“…Both resolution limits could be achieved separately, with Fresnel Zone Plates [183,184] and time dilation detectors [185]. A promising approach has nevertheless emerged recently for HED studies with XFEL [186,187].…”

Section: (C) Magnetized Turbulent Hydrodynamicsmentioning

confidence: 99%

Recent progress in quantifying hydrodynamics instabilities and turbulence in inertial confinement fusion and high-energy-density experiments

Casner

2020

Phil. Trans. R. Soc. A.

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Since the seminal paper of Nuckolls triggering the quest of inertial confinement fusion (ICF) with lasers, hydrodynamic instabilities have been recognized as one of the principal hurdles towards ignition. This remains true nowadays for both main approaches (indirect drive and direct drive), despite the advent of MJ scale lasers with tremendous technological capabilities. From a fundamental science perspective, these gigantic laser facilities enable also the possibility to create dense plasma flows evolving towards turbulence, being magnetized or not. We review the state of the art of nonlinear hydrodynamics and turbulent experiments, simulations and theory in ICF and high-energy-density plasmas and draw perspectives towards in-depth understanding and control of these fascinating phenomena. This article is part of a discussion meeting issue ‘Prospects for high gain inertial fusion energy (part 2)’.

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“…A relatively new and promising X-ray detector is lithium fluoride (LiF) in the form of bulk crystal and thin film, which has demonstrated its performance as a 2D and 3D imaging tool in a wide range of applications including X-ray microradiographs of small biological objects in the water-window spectral range (energy range between the absorption edges of carbon and oxygen at 284 eV and 532 eV) (Baldacchini et al, 2003); visualization and characterization of focused X-ray beams (Faenov et al, 2009;Pikuz et al, 2015;Bonfigli et al, 2016); coherent X-ray beam metrology by diffraction method (Ruiz-Lopez et al, 2017); X-ray radiography with a large aspect ratio field-of-view/spatial resolution; and, in particular, in the interests of HEDP (Faenov et al, 2018), phase-contrast imaging and quality control of nano-thickness foils (Faenov et al, 2010;Pikuz et al, 2018) and space-resolved dosimetry (Kurobori & Matoba, 2014).…”

Section: Introductionmentioning

confidence: 99%

Soft X-ray diffraction patterns measured by a LiF detector with sub-micrometre resolution and an ultimate dynamic range

et al. 2020

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The unique diagnostic possibilities of X-ray diffraction, small X-ray scattering and phase-contrast imaging techniques applied with high-intensity coherent X-ray synchrotron and X-ray free-electron laser radiation can only be fully realized if a sufficient dynamic range and/or spatial resolution of the detector is available. In this work, it is demonstrated that the use of lithium fluoride (LiF) as a photoluminescence (PL) imaging detector allows measuring of an X-ray diffraction image with a dynamic range of ∼107 within the sub-micrometre spatial resolution. At the PETRA III facility, the diffraction pattern created behind a circular aperture with a diameter of 5 µm irradiated by a beam with a photon energy of 500 eV was recorded on a LiF crystal. In the diffraction pattern, the accumulated dose was varied from 1.7 × 105 J cm−3 in the central maximum to 2 × 10−2 J cm−3 in the 16th maximum of diffraction fringes. The period of the last fringe was measured with 0.8 µm width. The PL response of the LiF crystal being used as a detector on the irradiation dose of 500 eV photons was evaluated. For the particular model of laser-scanning confocal microscope Carl Zeiss LSM700, used for the readout of the PL signal, the calibration dependencies on the intensity of photopumping (excitation) radiation (λ = 488 nm) and the gain have been obtained.

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Advanced high resolution x-ray diagnostic for HEDP experiments

Cited by 21 publications

References 41 publications

Micron-scale phenomena observed in a turbulent laser-produced plasma

Micron-scale phenomena observed in a turbulent laser-produced plasma

Recent progress in quantifying hydrodynamics instabilities and turbulence in inertial confinement fusion and high-energy-density experiments

Soft X-ray diffraction patterns measured by a LiF detector with sub-micrometre resolution and an ultimate dynamic range

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