Results 31 to 40 of about 14,865 (237)

Stability of Bragg reflectors under megahertz heat load at XFELs

Journal of Synchrotron Radiation, 2023
Modern X-ray free-electron laser (XFEL) sources can deliver photon pulses with millijoule pulse energies and megahertz repetition rate. As shown by the simulations in this work, for particular cases the dynamical heat load effects for Bragg reflectors ...
Immo Bahns, Patrick Rauer, Jörg Rossbach, Harald Sinn   +3 more
doaj   +1 more source

Multi‐Crystal X‐Ray Diffraction (MCXRD) Bridges the Crystallographic Characterisation Gap in Chemistry and Materials Science: Application to MOFs

Angewandte Chemie, EarlyView.
Multi‐crystal X‐ray diffraction (MCXRD) methods allow accurate structural characterisation with crystals too small for single‐crystal X‐ray diffraction and too large for electron diffraction, as demonstrated here for metal‐organic frameworks, and alleviate the radiation‐induced chemical changes that can result from using high‐intensity X‐ray sources to
Joshua P. Smith, Rebecca Smith, Thomas M. Roseveare, Dominic Bara, Alexander J. R. Thom, Ross S. Forgan, Mark R. Warren, Anna J. Warren, Robin L. Owen, Lee Brammer   +9 more
wiley   +2 more sources

Megahertz data collection from protein microcrystals at an X-ray free-electron laser

Nature Communications, 2018
The European X-ray free-electron laser (EuXFEL) in Hamburg is the first megahertz (MHz) repetition rate XFEL. Here the authors use lysozyme crystals and microcrystals from jack bean proteins and demonstrate that damage-free high quality data can be ...
Marie Luise Grünbein, Johan Bielecki, Alexander Gorel, Miriam Stricker, Richard Bean, Marco Cammarata, Katerina Dörner, Lars Fröhlich, Elisabeth Hartmann, Steffen Hauf, Mario Hilpert, Yoonhee Kim, Marco Kloos, Romain Letrun, Marc Messerschmidt, Grant Mills, Gabriela Nass Kovacs, Marco Ramilli, Christopher M. Roome, Tokushi Sato, Matthias Scholz, Michel Sliwa, Jolanta Sztuk-Dambietz, Martin Weik, Britta Weinhausen, Nasser Al-Qudami, Djelloul Boukhelef, Sandor Brockhauser, Wajid Ehsan, Moritz Emons, Sergey Esenov, Hans Fangohr, Alexander Kaukher, Thomas Kluyver, Max Lederer, Luis Maia, Maurizio Manetti, Thomas Michelat, Astrid Münnich, Florent Pallas, Guido Palmer, Gianpietro Previtali, Natascha Raab, Alessandro Silenzi, Janusz Szuba, Sandhya Venkatesan, Krzysztof Wrona, Jun Zhu, R. Bruce Doak, Robert L. Shoeman, Lutz Foucar, Jacques-Philippe Colletier, Adrian P. Mancuso, Thomas R. M. Barends, Claudiu A. Stan, Ilme Schlichting   +55 more
doaj   +1 more source

Potential of Time-Resolved Serial Femtosecond Crystallography Using High Repetition Rate XFEL Sources

Applied Sciences, 2022
This perspective review describes emerging techniques and future opportunities for time-resolved serial femtosecond crystallography (TR-SFX) experiments using high repetition rate XFEL sources.
Raphaël de Wijn, Diogo V. M. Melo, Faisal H. M. Koua, Adrian P. Mancuso   +3 more
doaj   +1 more source

Sample Delivery Systems for Serial Femtosecond Crystallography at the PAL-XFEL

Photonics, 2023
Serial femtosecond crystallography (SFX) using an X-ray free electron laser (XFEL) enables the determination of room-temperature structures without causing radiation damage.
Jaehyun Park, Ki Hyun Nam
doaj   +1 more source

Production and detection of very light bosons in the HERA tunnel [PDF]

, 2003
There are strong theoretical arguments in favour of the existence of very light scalar or pseudoscalar particles beyond the Standard Model which have, so far, remained undetected, due to their very weak coupling to ordinary matter.
A. Ringwald, Abbott, Anselm, Asztalos, Avignone, Bershady, Brandi, Buchmüller, Cameron, Collar, Cooper, De Panfilis, de Rujula, Dine, Dine, Gasperini, Gonzalez, Hagiwara, Hagmann, Hagmann, Hoogeveen, Hoogeveen, Hoogeveen, Inoue, Kim, Lazarus, Maiani, Morales, Nezrick, Peccei, Peccei, Preskill, Raffelt, Raffelt, Raffelt, Raffelt, Ressell, Ringwald, Ruoso, Semertzidis, Shifman, Sikivie, Sikivie, Sikivie, Sikivie, Turner, Van Bibber, Weinberg, Wilczek, Wuensch, Zawischa, Zhitnitsky, Zioutas   +52 more
core   +1 more source

Maximizing Spectral Flux from Self-Seeding Hard X-ray FELs

, 2013
Fully coherent x-rays can be generated by self-seeding x-ray free-electron lasers (XFELs). Self-seeding by a forward Bragg diffraction (FBD) monochromator has been recently proposed [1] and demonstrated [2].
Shvyd'ko, Yuri, Yang, Xi
core   +2 more sources

Pair production by Schwinger and Breit-Wheeler processes in bi-frequent fields [PDF]

, 2016
Counter-propagating and suitably polarized light (laser) beams can provide conditions for pair production. Here, we consider in more detail the following two situations: (i) In the homogeneity regions of anti-nodes of linearly polarized ultra-high ...
Blaschke, D., Kämpfer, B., Nousch, T., Otto, A., Panferov, A. D., Seipt, D., Smolyansky, S. A., Titov, A. I.   +7 more
core   +1 more source

The new XFELs [PDF]

Nature Methods, 2018
New X-ray free-electron (XFEL) facilities will broaden access to this technology, facilitate methods development, and push boundaries in structural biology.
openaire   +1 more source

High-resolution electron time-of-flight spectrometers for angle-resolved measurements at the SQS Instrument at the European XFEL

Journal of Synchrotron Radiation, 2022
A set of electron time-of-flight spectrometers for high-resolution angle-resolved spectroscopy was developed for the Small Quantum Systems (SQS) instrument at the SASE3 soft X-ray branch of the European XFEL.
Alberto De Fanis, Markus Ilchen, Alexander Achner, Thomas M. Baumann, Rebecca Boll, Jens Buck, Cyril Danilevsky, Sergey Esenov, Benjamin Erk, Patrik Grychtol, Gregor Hartmann, Jia Liu, Tommaso Mazza, Jacobo Montaño, Valerija Music, Yevheniy Ovcharenko, Nils Rennhack, Daniel Rivas, Daniel Rolles, Philipp Schmidt, Hamed Sotoudi Namin, Frank Scholz, Jens Viefhaus, Peter Walter, Pawel Ziółkowski, Haiou Zhang, Michael Meyer   +26 more
doaj   +1 more source