Development of an Experimental Platform for Combinative Use of an XFEL and a High-Power Nanosecond Laser

Inubushi, Yuichi; Yabuuchi, T.; Togashi, Tadashi; Sueda, Keiichi; Miyanishi, Kohei; Tange, Yoshinori; Ozaki, Norimasa; Matsuoka, Takeshi; Kodama, R.; Osaka, Taito; Matsuyama, Satoshi; Yamauchi, Kazuto; Yumoto, Hirokatsu; Koyama, Takahisa; Ohashi, Haruhiko; Tono, Kensuke; Yabashi, Makina

doi:10.3390/app10072224

Cited by 24 publications

(14 citation statements)

References 25 publications

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“…X-ray free electron laser (XFEL) sources now provide bright enough x-ray beams to record highquality XRD measurements in a single, femtosecond-scale pulse making a wide range of new studies possible. We have used the extremely bright, ∼10 fs x-ray pulse generated at the Spring-8 Angstrom Compact Free Electron Laser [47][48][49] (SACLA) facility in Japan to determine the crystal structure during the initial shock in Fe, Fe-Si 8.5wt% , and Fe-Si 16wt% as well as on release into sapphire in Fe-Si 16wt% . The short duration and high brightness of the x-ray pulse combined with the short penetration depth of the x-rays in the reflection probe geometry allows us to effectively take snapshots of the crystallographic phase.…”

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confidence: 99%

Ultrafast X-ray diffraction measurements of shock-compressed iron and iron alloys

Krygier¹,

Harmand²,

Albertazzi³

et al. 2020

Preprint

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The extreme pressures achievable with dynamic compression holds great promise for studying planetary interiors. Phase stability of Fe-Si alloys, which are complex to address, is particularly relevant to understanding telluric planetary cores due to the widely varying properties produced by small changes in Si concentration. Here we report the study of phase stability of pure iron and Fe-Si alloys by x-ray diffraction measurements carried out on shocked samples using an x-ray free electron laser (XFEL). Our setup combined with the brilliance of the XFEL allows us to observe the rapid onset of high-pressure solid-solid phase transformation in Fe and Fe-Si8.5wt%; we observe no such evidence in Fe-Si16wt% up to 110 GPa on the nanosecond timescale. Density Functional Theory calculations provide the conceptual framework to rationalize these observations. Taken together our experiments and calculations support recent dynamic compression measurements and shed light on conflicting static compression results. Our work highlights the need to properly consider the differing intrinsic timescales of the static and dynamic experiments when comparing results, and the complementarity of the techniques in assessing phase diagram and transition mechanisms.

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confidence: 99%

Ultrafast X-ray diffraction measurements of shock-compressed iron and iron alloys

Krygier¹,

Harmand²,

Albertazzi³

et al. 2020

Preprint

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“…At SACLA, a ceramic YAG optical laser (532 nm, 5 ns, quasi flat top pulse) in combination with 300-μm diameter phase plates was applied. Detailed information about the experimental platforms can be found in the references 48,49 . Five different maximum drive laser energies were used for the experiments: 19.1 J and 22.1 J at SACLA, and 48.6 J, 50.6 J, 51 J at LCLS.…”

Section: Methodsmentioning

confidence: 99%

Evidence of shock-compressed stishovite above 300 GPa

Schoelmerich

Tschentscher

Bhat

et al. 2020

Sci Rep

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Sio 2 is one of the most fundamental constituents in planetary bodies, being an essential building block of major mineral phases in the crust and mantle of terrestrial planets (1-10 M E). Silica at depths greater than 300 km may be present in the form of the rutile-type, high pressure polymorph stishovite (P4 2 /mnm) and its thermodynamic stability is of great interest for understanding the seismic and dynamic structure of planetary interiors. previous studies on stishovite via static and dynamic (shock) compression techniques are contradictory and the observed differences in the lattice-level response is still not clearly understood. Here, laser-induced shock compression experiments at the LcLS-and SAcLA XfeL light-sources elucidate the high-pressure behavior of stishovite on the lattice-level under in situ conditions on the Hugoniot to pressures above 300 GPa. We find stishovite is still (meta-)stable at these conditions, and does not undergo any phase transitions. this contradicts static experiments showing structural transformations to the cacl 2 , α-pbo 2 and pyrite-type structures. However, rate-limited kinetic hindrance may explain our observations. these results are important to our understanding into the validity of eoS data from nanosecond experiments for geophysical applications. Stishovite, the high-pressure polymorph of silica, is of vast interest for planetary-and material science as a dominant constituent material in the mantle of Earth and larger terrestrial extra-solar planets. Under equilibrium conditions, stishovite becomes the stable form of SiO 2 at pressures above ~7 GPa and crystallizes in the rutile-type structure (P4 2 /mnm), consisting of octahedrally coordinated Si atoms 1-3. Static compression studies using diamond anvil cell (DAC) techniques show, that stishovite undergoes a displacive phase transition to the orthorhombic CaCl 2-type structure (Pnnm) at ~60 GPa 4-10 and a further transition to the α-PbO 2 type structure (Pbcn) at ~121 GPa 10-16. To date, the highest-pressure experimentally determined SiO 2 phase transformation is to the pyrite-type structure (Pa3) at around 268 GPa 17. Additionally, silica has been explored using dynamic shock compression experiments. Shock compression studies of fused silica and quartz up to 200 GPa indicate phase transitions to stishovite, post-stishovite phase(s) and melting above 120 GPa 18-23. However, only few studies use stishovite as a starting material. This is mainly due to the difficulty of synthesizing large specimens of stishovite without impurities or significant porosity, and preparing these samples for shock compression experiments. Stishovite has been shock compressed in the pressure regime between 193.6-235.7 GPa with the gas gun technique 24 , between 316-992 GPa with the flyer plate technique at the Z-machine 25 and in the pressure regime between 1032.2-2660.4 GPa with the decaying shock method at the OMEGA laser facility 26. All three studies resolve the stishovite continuum Hugoniot. In contrast to static experiments 5 , there is...

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“…In recent years, a new strategy has emerged: coupling more compact lasers to brilliant X-ray sources such as synchrotrons or XFELs to ensure high-quality X-ray measurements (Glenzer et al, 2016;Wang et al, 2019;Inubushi et al, 2020), thus exploiting the long-standing expertise of the synchrotron community.…”

Section: Introductionmentioning

confidence: 99%

Towards a dynamic compression facility at the ESRF

Sévelin-Radiguet¹,

Torchio²,

Berruyer³

et al. 2022

J Synchrotron Rad

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Results of the 2018 commissioning and experimental campaigns of the new High Power Laser Facility on the Energy-dispersive X-ray Absorption Spectroscopy (ED-XAS) beamline ID24 at the ESRF are presented. The front-end of the future laser, delivering 15 J in 10 ns, was interfaced to the beamline. Laser-driven dynamic compression experiments were performed on iron oxides, iron alloys and bismuth probed by online time-resolved XAS.

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Development of an Experimental Platform for Combinative Use of an XFEL and a High-Power Nanosecond Laser

Cited by 24 publications

References 25 publications

Ultrafast X-ray diffraction measurements of shock-compressed iron and iron alloys

Ultrafast X-ray diffraction measurements of shock-compressed iron and iron alloys

Evidence of shock-compressed stishovite above 300 GPa

Towards a dynamic compression facility at the ESRF

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