J. Strucka

Richtmyer-Meshkov Instability Freezeout in Stratified Fluid Layers

Simon Bland, Guillaume T. Bokman, Charles Heaton, Chaoyi Jing et autres

In inertial confinement nuclear fusion, hydrodynamic instabilities degrade implosion symmetry and hot-spot confinement, we aim to make the first measurement of Richtmyer Meshkov instability freeze-out in a stratified fluid layer. The design follows the structure of the shell formed between the ablation …

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Generation of high-fluence and high-intensity hard x-ray attosecond pulses at European XFEL

Ichiro Inoue, Ulrike Boesenberg, Rustam Rysov, Takahiro Sato et autres

By combining hard x-ray attosecond pulses from the European XFEL with total-reflection focusing x-ray optics, we generated nanofocused hard x-ray attosecond pulses with intensities and fluences comparable to the highest values attained in the hard x-ray regime. A peak intensity on the …

Generation of high-fluence and high-intensity hard x-ray attosecond pulses at European XFEL

Ichiro Inoue, Ulrike Boesenberg, Rustam Rysov, Takahiro Sato et autres

By combining hard x-ray attosecond pulses from the European XFEL with total-reflection focusing x-ray optics, we generated nanofocused hard x-ray attosecond pulses with intensities and fluences comparable to the highest values attained in the hard x-ray regime. A peak intensity on the …

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Supersonic water jets driven by exploding conical wire arrays and their impact on aluminum targets

F. Garcia, Xinyi Wei, N. Apazidis, J. Strucka et autres

This work investigates the formation of supersonic water jets produced by exploding conical wire arrays and their impact on aluminum targets of different thicknesses. Experiments are performed using the pulsed power driver at beamline ID19 of the European Synchrotron Radiation Facility (ESRF), …

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Imaging Collective Dynamics of Electrothermal Instability for Inertial Fusion Energy

J. Strucka

High resolution x-ray radiography of pulsed power-driven foil explosions

N. Asmedianov, R. Grikshtas, G D Liziakin, J. Strucka et autres

We present x-ray radiographs of underwater electrically driven exploding copper foils of different thickness, captured at the European X-ray Free-Electron Laser (EuXFEL) using 20 keV (∼30 eV bandwidth) self-amplified spontaneous emission photon beams. The foils were exploded by a ∼30 kA amplitude, …

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Supersonic jets and strong shock waves generated by electrical explosions of V-shaped foils in water and gelatin

N. Asmedianov, R. Grikshtas, S. Efimov, J. Strucka et autres

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Review of Recent Experimental Research in High Energy Density Physics by Underwater Wire and Foil Explosions

R. Grikshtas, N. Asmedianov, S. Efimov, Ya. E. Krasik et autres

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Synchrotron radiography of wire-driven cylindrically converging shock waves interacting with a cylindrical bubble

F. Garcia, Sourabh Bhardwaj, Sebastián Rojas Mata, N. Apazidis et autres

The interaction between cylindrically converging shock waves (SWs) in a water–gelatine solution and a coaxial cylindrical air bubble is studied experimentally and numerically. Two configurations are considered: (i) an azimuthally symmetric, cylindrically converging SW of Mach 1.35 impinging on a coaxial cylindrical …

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Author response for "XFEL Imaging Techniques for High Energy Density and Inertial Fusion Energy Research at HED-HiBEF"

Alejandro Martinez Garcia, Mikhail Mishchenko, V. Bouffetier, G. Pérez-Callejo et autres

Passive Freeze-Out of the Richtmyer-Meshkov Instability

J. Strucka, Dane M. Sterbentz, Bratislav Lukić, K. Mughal et autres

The Richtmyer-Meshkov instability (RMI) poses a major challenge in inertial confinement fusion (ICF) due to its role in mixing and performance degradation. We report the first experimental observation of passive freeze-out of RMI in a low-pressure surrogate regime, an instability stagnation effect …

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Current shunting and plasma instabilities during electrical explosions of copper and aluminum wires in water and air

R. Grikshtas, N. Asmedianov, S. Pavlov, Irena Yungerman et autres

We present the first x-ray images of electrically exploding wires in air and water, captured at the European X-ray Free-Electron Laser (EuXFEL). These images reveal current shunting in a copper wire during its explosion in air, and the development of electrothermal (and …

il, gb, de, fr, se, us (code pays fourni par la source)