161 citations · 502 across the 31 of their papers we have counts for
31 papers
X-ray Coherent Attosecond Pulse Pair Spectroscopy
Zain Abhari, Thomas M. Linker, Thomas Kroll +14
X-ray free electron laser (XFEL) experiments using self-amplified spontaneous emission (SASE) pulses typically achieve temporal resolutions of order several femtoseconds, as the pu…
Phase transitions of eutectic high entropy alloy AlCoCrFeNi2.1 under shock compression
Sophie E. Parsons, Kento Katagiri, Hangman Chen +31
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 re…
Enhanced plasma heating via interaction with high-contrast laser and cone-shaped target
Yuga Karaki, Yoshitaka Mori, Eigo Ebisawa +25
We investigated plasma heating enhancement using a high-intensity, high-contrast laser and a cone-attached target. Fast electron spectra and X-ray emission were measured with an el…
XRD study of the magnetization plateau above 40 T in the frustrated helimagnet CuGaCrS
M. Gen, K. Noda, K. Shimbori +14
CuGaCrS, which contains a chromium breathing pyrochlore network, exhibits diverse magnetic phases, including an incommensurate helical state below 31 K and a 1/2-magnet…
X-ray free-electron laser observation of giant and anisotropic magnetostriction in -O at 110 Tesla
Akihiko Ikeda, Yuya Kubota, Yuto Ishii +18
In strong magnetic fields beyond 100 T, the significant Zeeman energy competes with the lattice interactions, where a considerable magnetostriction is expected. However, the micros…
Observation of Multiplet Lines in Seeded Stimulated Mn Kα1 X-ray Emission
Thomas Kroll, Margaret Doyle, Aliaksei Halavanau +20
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…
Comment on "Comments regarding "Transonic dislocation propagation in diamond" by Katagiri, et al. (Science 382, 69-72, 2023)" by Hawreliak, et al. (arXiv:2401.04213)
Kento Katagiri, Tatiana Pikuz, Lichao Fang +24
In their comment (1), Hawreliak et al. claims that our observation of stacking fault formation and transonic dislocation propagation in diamond (2) is not valid as they interpret t…
Attosecond Inner-Shell Lasing at Angstrom Wavelengths
Thomas M. Linker, Aliaksei Halavanau, Thomas Kroll +34
Since the invention of the laser nonlinear effects such as filamentation, Rabi-cycling and collective emission have been explored in the optical regime leading to a wide range of s…
(Sub-)picosecond surface correlations of femtosecond laser excited Al-coated multilayers observed by grazing-incidence x-ray scattering
Lisa Randolph, Mohammadreza Banjafar, Toshinori Yabuuchi +22
Femtosecond high-intensity laser pulses at intensities surpassing can generate a diverse range of functional surface nanostructures. Achieving prec…
Sub-photon accuracy noise reduction of single shot coherent diffraction pattern with atomic model trained autoencoder
Takuto Ishikawa, Yoko Takeo, Kai Sakurai +8
Single-shot imaging with femtosecond X-ray lasers is a powerful measurement technique that can achieve both high spatial and temporal resolution. However, its accuracy has been sev…
Interplay of thermal and non-thermal effects in x-ray-induced ultrafast melting
Ichiro Inoue, Victor Tkachenko, Yuya Kubota +15
X-ray laser-induced structural changes in silicon undergoing femtosecond melting have been investigated by using an x-ray pump-x-ray probe technique. The experimental results for d…
Femtosecond reduction of atomic scattering factors triggered by intense x-ray pulse
Ichiro Inoue, Jumpei Yamada, Konrad J. Kapcia +12
X-ray diffraction of silicon irradiated with tightly focused femtosecond x-ray pulses (photon energy: 11.5 keV, pulse duration: 6 fs) was measured at various x-ray intensities up t…
Transonic Dislocation Propagation in Diamond
Kento Katagiri, Tatiana Pikuz, Lichao Fang +24
The motion of line defects (dislocations) has been studied for over 60 years but the maximum speed at which they can move is unresolved. Recent models and atomistic simulations pre…
Pushing the limits of flow strength in diamond
Anirudh Hari, Kento Katagiri, Wanghui Li +34
Extreme pressures and temperatures create conditions that allow even hard and brittle materials to deform plastically. Despite extensive research, the upper limits of flow strength…
Direct imaging of shock wave splitting in diamond at Mbar pressures
S. S. Makarov, S. A. Dyachkov, T. A. Pikuz +19
The propagation of a shock wave in solids can stress them to ultra-high pressures of millions of atmospheres. Understanding the behavior of matter at these extreme pressures is ess…
Generating 77 T using a portable pulse magnet for single shot quantum beam experiments
Akihiko Ikeda, Yasuhiro H. Matsuda, Xuguang Zhou +8
We devised a portable system that generates pulsed high magnetic fields up to 77 T with 3 s duration. The system employs the single turn coil method, a destructive way of field…
Delayed onset and directionality of x-ray-induced atomic displacements observed on subatomic length scales
Ichiro Inoue, Victor Tkachenko, Konrad J. Kapcia +6
Transient structural changes of AlO on subatomic length scales following irradiation with an intense x-ray laser pulse (photon energy: 8.70 keV; pulse duration: 6 fs; fluen…
Generation of Intense Phase-Stable Femtosecond Hard X-ray Pulse Pairs
Yu Zhang, Thomas Kroll, Clemens Weninger +24
Coherent nonlinear spectroscopies and imaging in the X-ray domain provide direct insight into the coupled motions of electrons and nuclei with resolution on the electronic length a…
Shortening X-ray Pulse Duration via Saturable Absorption
Ichiro Inoue, Yuichi Inubushi, Taito Osaka +4
To shorten the duration of x-ray pulses, we present a nonlinear optical technique using atoms with core-hole vacancies (core-hole atoms) generated by inner-shell photoionization. T…
Nanoscale subsurface dynamics of solids upon high-intensity laser irradiation observed by femtosecond grazing-incidence x-ray scattering
Lisa Randolph, Mohammadreza Banjafar, Thomas R. Preston +28
Observing ultrafast laser-induced structural changes in nanoscale systems is essential for understanding the dynamics of intense light-matter interactions. For laser intensities on…
Using Diffuse Scattering to Observe X-Ray-Driven Nonthermal Melting
N. J. Hartley, J. Grenzer, L. Huang +20
We present results from the SPring-8 Angstrom Compact free electron LAser (SACLA) XFEL facility, using a high intensity (W/cm) X-ray pump X-ray probe scheme to…
Nonlinear resonant X-ray Raman scattering
Johann Haber, Andreas Kaldun, Samuel W. Teitelbaum +12
We report the observation of a novel nonlinear effect in the hard x-ray range. Upon illuminating Fe and Cu metal foils with intense x-ray pulses tuned near their respective K edges…
Nanofocusing optics for an X-ray free-electron laser generating an extreme intensity of 100 EW/cm using total reflection mirrors
Hirokatsu Yumoto, Yuichi Inubushi, Taito Osaka +5
A nanofocusing optical system referred to as for an X-ray free-electron laser (XFEL) was developed to generate an extremely high intensity of 100 EW/cm (10$^…
Dynamics of the photoinduced insulator-to-metal transition in a nickelate film
Vincent Esposito, Laurenz Rettig, Elisabeth M. Bothschafter +24
The control of materials properties with light is a promising approach towards the realization of faster and smaller electronic devices. With phases that can be controlled via stra…