Results 31 to 40 of about 3,214 (182)

Generation of time-synchronized two-color X-ray free-electron laser pulses using phase shifters

Scientific Reports, 2023
To optimize the intensity of X-ray free-electron lasers (XFELs), phase shifters, oriented in phase with the phases of the XFEL pulse and electron beam, are typically installed at undulator lines.
Myung-Hoon Cho, Teyoun Kang, Haeryong Yang, Gyujin Kim, Seong-Hoon Kwon, Kook-Jin Moon, Inhyuk Nam, Chang-Ki Min, Hoon Heo, Changbum Kim, Heung-Sik Kang, Chi Hyun Shim   +11 more
doaj   +1 more source

Experimental Demonstration of Attoseconds-at-Harmonics at the SASE3 Undulator of the European XFEL

Photonics, 2023
We report on observations of single spike spectra (3–13% of events) upon employing a previously proposed method for single spike generation via harmonic conversion. The method was tested at the soft X-ray SASE3 undulator of the European XFEL.
Andrei Trebushinin, Gianluca Geloni, Svitozar Serkez, Giuseppe Mercurio, Natalia Gerasimova, Theophilos Maltezopoulos, Marc Guetg, Evgeny Schneidmiller   +7 more
doaj   +1 more source

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

Chemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source

Machine-learning-enhanced automatic spectral characterization of x-ray pulses from a free-electron laser

Communications Physics
A reliable characterization of x-ray pulses is critical to optimally exploit advanced photon sources, such as free-electron lasers. In this paper, we present a method based on machine learning, the virtual spectrometer, that improves the resolution of ...
Danilo Enoque Ferreira de Lima, Arman Davtyan, Joakim Laksman, Natalia Gerasimova, Theophilos Maltezopoulos, Jia Liu, Philipp Schmidt, Thomas Michelat, Tommaso Mazza, Michael Meyer, Jan Grünert, Luca Gelisio   +11 more
doaj   +1 more source

Towards pump–probe single-crystal XFEL refinements for small-unit-cell systems

IUCrJ, 2023
Serial femtosecond crystallography for small-unit-cell systems has so far seen very limited application despite obvious scientific possibilities. This is because reliable data reduction has not been available for these challenging systems. In particular,
Lise Joost Støckler, Lennard Krause, Bjarke Svane, Kasper Tolborg, Bo Richter, Seiya Takahashi, Tomoki Fujita, Hidetaka Kasai, Michihiro Sugahara, Ichiro Inoue, Eiji Nishibori, Bo Brummerstedt Iversen   +11 more
doaj   +1 more source

Ultrafast Transitions in X‐Ray Irradiated Solids

Contributions to Plasma Physics, EarlyView.
ABSTRACT In this review, we present current developments on modeling ultrafast transitions in solids triggered by intense, atto‐ to femtosecond pulses from X‐ray free electron lasers. This specific irradiation regime requires dedicated simulation tools based on theoretical and computational methods, involving the elements of classical and quantum ...
Sebastião Antunes, Konrad J. Kapcia, Vladimir Lipp, Beata Ziaja   +3 more
wiley   +1 more source

An advanced workflow for single-particle imaging with the limited data at an X-ray free-electron laser. Corrigendum

IUCrJ, 2022
An error in Fig. 3(c) of the article by Assalauova et al. [IUCrJ (2020), 7, 1102–1113] is corrected.
Dameli Assalauova, Young Yong Kim, Sergey Bobkov, Ruslan Khubbutdinov, Max Rose, Roberto Alvarez, Jakob Andreasson, Eugeniu Balaur, Alice Contreras, Hasan DeMirci, Luca Gelisio, Janos Hajdu, Mark S. Hunter, Ruslan P. Kurta, Haoyuan Li, Matthew McFadden, Reza Nazari, Peter Schwander, Anton Teslyuk, Peter Walter, P. Lourdu Xavier, Chun Hong Yoon, Sahba Zaare, Viacheslav A. Ilyin, Richard A. Kirian, Brenda G. Hogue, Andrew Aquila, Ivan A. Vartanyants   +27 more
doaj   +1 more source

Orientational Effects in the Low Pair Continuum of Aluminium

Contributions to Plasma Physics, EarlyView.
ABSTRACT We compare the predictions of the dynamic structure factor (DSF) of ambient polycrystalline aluminium from time‐dependent density functional theory (TDDFT) in the pair continuum regime to recent ultrahigh resolution x‐ray Thomson scattering measurements, collected at the European XFEL.
Thomas Gawne, Zhandos A. Moldabekov, Oliver S. Humphries, Motoaki Nakatsutsumi, Sebastian Schwalbe, Jan Vorberger, Ulf Zastrau, Tobias Dornheim, Thomas R. Preston   +8 more
wiley   +1 more source

Coherence properties of the European XFEL

New Journal of Physics, 2010
The European x-ray free-electron laser (XFEL) provides x-ray self-amplified spontaneous emission (SASE) FEL radiation in the wavelength range from 0.1 to 3 nm using three undulator systems. The SASE mode of operation at the European XFEL defines specific behavior of longitudinal and transverse coherence properties.
Geloni, G., Saldin, E., Samoylova, L., Schneidmiller, E., Sinn, H., Tschentscher, Th., Yurkov, M.   +6 more
openaire   +2 more sources

Viscoelastic characterization of the lipid cubic phase provides insights into high-viscosity extrusion injection for XFEL experiments

Scientific Reports
Serial crystallography (SX) is a powerful method for determining macromolecular structures, enabled by the advent of X-ray free-electron lasers (XFELs). SX experiments require the continuous delivery of microcrystals, achievable through liquid jets, high-
Dmitrii Zabelskii, Ekaterina Round, Huijong Han, David von Stetten, Romain Letrun, Chan Kim, Tokushi Sato, Diogo V. M. Melo, Raphaël de Wijn, Konstantin Kharitonov, Peter Smyth, Katerina Doerner, Marco Kloos, Thomas Dietze, Luis Lopez Morillo, Richard Bean, Adam Round   +16 more
doaj   +1 more source