Makina Yabashi
YOU?
Author Swipe
View article: Simultaneous hard x-ray Talbot phase and dark-field imaging in laser experiments at XFEL facilities
Simultaneous hard x-ray Talbot phase and dark-field imaging in laser experiments at XFEL facilities Open
X-ray Free Electron Laser (XFEL) facilities offer unprecedented opportunities to advance instrumentation for studying matter under extreme conditions. In this study, we harnessed the enhanced x-ray capabilities of XFELs to demonstrate dark…
View article: Channel-cut monochromator withstanding incident powers above 400 W on undulator beamlines
Channel-cut monochromator withstanding incident powers above 400 W on undulator beamlines Open
A liquid-nitrogen-cooled silicon channel-cut monochromator was developed and experimentally evaluated under high-thermal-load conditions. Under the maximum load of 417 W, the first reflecting surface exhibited a concave deformation, result…
View article: <i>Journal of Synchrotron Radiation</i> welcomes seven new Co-editors
<i>Journal of Synchrotron Radiation</i> welcomes seven new Co-editors Open
The newest seven members of the Editorial Board of Journal of Synchrotron Radiation are introduced.
View article: Automated alignment of XFEL nanofocusing mirrors via wavefront optimization
Automated alignment of XFEL nanofocusing mirrors via wavefront optimization Open
An automated alignment procedure, based on wavefront measurement with a single-grating interferometer, has been developed for precise tuning of Kirkpatrick–Baez nanofocusing mirrors for X-ray free-electron lasers (XFELs). This approach opt…
View article: Compact Tape-Driven Sample Delivery System for Serial Femtosecond Crystallography
Compact Tape-Driven Sample Delivery System for Serial Femtosecond Crystallography Open
We developed a compact tape-drive with on-demand sample delivery (CoT) for time-resolved serial femtosecond crystallography (SFX) experiments that can deliver sample droplets and/or initiate reactions with a drop-on-drop strategy. Two disp…
View article: X-Ray Free-Electron Laser Observation of Giant and Anisotropic Magnetostriction in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>β</mml:mi> <mml:mtext>−</mml:mtext> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">O</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> at 110 Tesla
X-Ray Free-Electron Laser Observation of Giant and Anisotropic Magnetostriction in at 110 Tesla Open
In strong magnetic fields beyond 100 T, the significant Zeeman energy competes with the lattice interactions, where a considerable magnetostriction is expected. However, the microscopic observation of the magnetostriction above 100 T has b…
View article: BL46XU: an applied hard X-ray photoelectron spectroscopy beamline HAXPES II at SPring-8
BL46XU: an applied hard X-ray photoelectron spectroscopy beamline HAXPES II at SPring-8 Open
The BL46XU beamline of SPring-8 has been reorganized into a beamline dedicated to hard X-ray photoelectron spectroscopy (HAXPES) to meet the increasing demand for various HAXPES based measurements. Two specialized HAXPES instruments, namel…
View article: An X-ray beamline for utilizing intense, high-energy undulator radiation
An X-ray beamline for utilizing intense, high-energy undulator radiation Open
The design, development and performance of an X-ray beamline for utilizing intense, high-energy undulator radiation are presented. A double multilayer monochromator, consisting of 150 pairs of 3.33 nm periodic Cr/C multilayers, provides in…
View article: Phase transitions of eutectic high entropy alloy AlCoCrFeNi2.1 under shock compression
Phase transitions of eutectic high entropy alloy AlCoCrFeNi2.1 under shock compression Open
High entropy alloys (HEAs) are a new class of metals that exhibit unique mechanical performance. Among HEAs, additively manufactured eutectic high entropy alloys (AM-EHEAs) have recently emerged as candidate materials for use in extreme co…
View article: Deciphering the altered conformational states of bifunctional thaumarchaeal crotonyl-CoA hydratase and 3-hydroxypropionyl-CoA dehydratase from <i>Nitrosopumilus maritimus</i>
Deciphering the altered conformational states of bifunctional thaumarchaeal crotonyl-CoA hydratase and 3-hydroxypropionyl-CoA dehydratase from <i>Nitrosopumilus maritimus</i> Open
The thaumarchaeal 3-hydroxypropionate/4-hydroxybutyrate (3HP/4HB) cycle represents one of the most efficient mechanisms for CO2 fixation discovered to date. Within this cycle, the enzyme encoded by Nmar_1308 from Nitrosopumilus maritimus S…
View article: All hard X-ray transient grating spectroscopy
All hard X-ray transient grating spectroscopy Open
Optical-domain transient grating (TG) spectroscopy is the ideal tool to investigate transport phenomena in gases, liquids and solids, but it is limited to typically micron-size grating periods. Extreme-Ultraviolet TG has represented a majo…
View article: Attosecond inner-shell lasing at ångström wavelengths
Attosecond inner-shell lasing at ångström wavelengths Open
Since the invention of the laser, nonlinear effects such as filamentation1, Rabi cycling2,3 and collective emission4 have been explored in the optical regime, leading to a wide range of scientific and industrial applications5-8. X-ray free…
View article: Electronic and Structural Relaxation of Photoexcited WO<sub>3</sub> Observed by Femtosecond Resonant X-ray Emission Spectra
Electronic and Structural Relaxation of Photoexcited WO<sub>3</sub> Observed by Femtosecond Resonant X-ray Emission Spectra Open
Photoexcited states of tungsten trioxide (WO3) were observed using femtosecond high-energy-resolution fluorescence detection X-ray Absorption Spectra (HERFD-XAS) and resonant X-ray emission spectra (RXES). In the initial state of the photo…
View article: Experimental demonstration of attosecond hard X-ray pulses
Experimental demonstration of attosecond hard X-ray pulses Open
We present the first direct experimental confirmation of attosecond pulse generation in the hard X-ray regime with a free-electron laser. Our experiment is based on measurements of a nonlinear optical phenomenon known as amplified spontane…
View article: Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission
Hybridized and Localized 4f Electronic States of Nd-based Intermetallic Compounds in Cubic Symmetry Probed by High-Energy Photoemission Open
We have performed soft and hard X-ray photoemission spectroscopies on NdTi2Al20 and NdBe13 which show antiferromagnetic ordering at low temperatures. The Nd 3d core-level photoemission and Nd 3d-4f valence-band resonant photoemission spect…
View article: A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures
A Stress Memory Effect in Olivine at Upper Mantle Pressures and Temperatures Open
Cyclic deformation experiments on olivine aggregates have been conducted at pressures of 1.9–2.8 GPa and temperatures of 297–1250 K. Measurements of mechanical data combined with acoustic emission (AE) monitoring revealed that activity of …
View article: In situ observation of shock-induced structural evolution of calcite
In situ observation of shock-induced structural evolution of calcite Open
In this study, we aimed to evaluate the shock-induced behavior of calcite (CaCO 3 ), a potential source of CO and/or CO 2 . To this end, we experimentally investigated the time evolution of calcite during shock compression and decompressio…
View article: Ultra-fast heating effects in an aqueous salt solution investigated via X-ray split-and-delay technique
Ultra-fast heating effects in an aqueous salt solution investigated via X-ray split-and-delay technique Open
We present a split-and-delay study on an aqueous salt solution. We employed SACLA split-and-delay optics to split each FEL pulse into pair of two pulses and delayed one of them. The sample was delivered via a liquid jet system which was il…
View article: Strategy of Development of Beamline Optics for SPring-8-II
Strategy of Development of Beamline Optics for SPring-8-II Open
The SPring-8 facility is scheduled for an upgrade to SPring-8-II in FY2028, transforming it into the fourth-generation synchrotron radiation source based on a multi-bend achromat design. This upgrade will deliver enhanced beam performance,…
View article: Nanosecond structural evolution in shocked coesite
Nanosecond structural evolution in shocked coesite Open
The phase transitions in minerals under shock are crucial for understanding meteorite impact history. Recent time-resolved x-ray diffraction (XRD) studies on silica shocked to 65 GPa proposed the formation of different high-pressure phases…
View article: Experimental and Computational Insights into the Structural Dynamics of the Fc Fragment of IgG1 Subtype from Biosimilar VEGF‐Trap
Experimental and Computational Insights into the Structural Dynamics of the Fc Fragment of IgG1 Subtype from Biosimilar VEGF‐Trap Open
The constant fragment (Fc) of the immunoglobulin G1 (IgG1) subtype is increasingly recognized as a crucial scaffold in the development of advanced therapeutics due to its enhanced specificity, efficacy, and extended half‐life. A prime exam…
View article: X-ray free-electron laser observation of giant and anisotropic magnetostriction in $β$-O$_{2}$ at 110 Tesla
X-ray free-electron laser observation of giant and anisotropic magnetostriction in $β$-O$_{2}$ at 110 Tesla Open
In strong magnetic fields beyond 100 T, the significant Zeeman energy competes with the lattice interactions, where a considerable magnetostriction is expected. However, the microscopic observation of the magnetostriction above 100 T has b…
View article: Development of portable nanofocusing optics for X-ray free-electron laser pulses
Development of portable nanofocusing optics for X-ray free-electron laser pulses Open
We present the development of a portable and compact nanofocusing system utilizing Kirkpatrick–Baez optics for X-ray free-electron lasers (XFELs). The system has a total length of merely 340 mm from the initial elliptical mirror to the foc…
View article: High-intensity X-ray pump-monochromatic X-ray probe technique across time zero
High-intensity X-ray pump-monochromatic X-ray probe technique across time zero Open
A femtosecond pump–probe technique, capable of probing transient changes in intense X-ray-excited matter with monochromatic X-ray pulses and accessing data for both positive and negative delay times, is proposed. The application of this te…
View article: Observation of Multiplet Lines in Seeded Stimulated Mn Kα1 X-ray Emission
Observation of Multiplet Lines in Seeded Stimulated Mn Kα1 X-ray Emission Open
We report the successful resolution of the multiplet structure of the Kα1 x-ray emission in manganese (Mn) complexes through seeded stimulated X-ray emission spectroscopy (seeded S-XES). By employing a femtosecond pump pulse above the Mn K…
View article: Probing an enzyme active site with time-resolved serial femtosecond crystallography by a liquid injector and a belt system
Probing an enzyme active site with time-resolved serial femtosecond crystallography by a liquid injector and a belt system Open
After time-resolved serial femtosecond crystallography (TR-SFX) of light-activated proteins surge, various techniques have been developed to apply TR-SFX to photo-unreactive proteins such as enzymes and receptors. We employed two mixing sy…
View article: Long-term timing stabilization for pump–probe experiments at SACLA
Long-term timing stabilization for pump–probe experiments at SACLA Open
We have developed a timing control system to stabilize the long-term timing drift between X-ray free-electron laser (XFEL) and optical laser pulses using an out-of-loop balanced optical-microwave phase detector and an arrival-timing monito…
View article: Resolution enhancement on single-shot X-ray spectrometers using a detuned non-dispersive multi-crystal analyzer
Resolution enhancement on single-shot X-ray spectrometers using a detuned non-dispersive multi-crystal analyzer Open
This study proposes and demonstrates a simple method for improving the energy resolution in a single-shot X-ray spectrometer, which consists of a focusing mirror and a single-crystal analyzer. Two Si(220) channel-cut crystals arranged in a…