Results 11 to 20 of about 147,656 (247)

X-ray optics for the cavity-based X-ray free-electron laser [PDF]

Journal of Synchrotron Radiation
A cavity-based X-ray free-electron laser (CBXFEL) is a possible future direction in the development of fully coherent X-ray sources. CBXFELs consist of a low-emittance electron source, a magnet system with several undulators and chicanes, and an X-ray ...
Peifan Liu, Paresh Pradhan, Xianbo Shi, Deming Shu, Keshab Kauchha, Zhi Qiao, Kenji Tamasaku, Taito Osaka, Diling Zhu, Takahiro Sato, James MacArthur, XianRong Huang, Lahsen Assoufid, Marion White, Kwang-Je Kim, Yuri Shvyd'ko   +15 more
doaj   +2 more sources

Ultrashort Free-Electron Laser X-ray Pulses

Applied Sciences, 2017
For the investigation of processes happening on the time scale of the motion of bound electrons, well-controlled X-ray pulses with durations in the few-femtosecond and even sub-femtosecond range are a necessary prerequisite.
Wolfram Helml, Ivanka Grguraš, Pavle N. Juranić, Stefan Düsterer, Tommaso Mazza, Andreas R. Maier, Nick Hartmann, Markus Ilchen, Gregor Hartmann, Luc Patthey, Carlo Callegari, John T. Costello, Michael Meyer, Ryan N. Coffee, Adrian L. Cavalieri, Reinhard Kienberger   +15 more
doaj   +3 more sources

Superconducting undulator activities at the European X-ray Free-Electron Laser Facility

Frontiers in Physics, 2023
For more than 5 years, superconducting undulators (SCUs) have been successfully delivering X-rays in storage rings. The European X-Ray Free-Electron Laser Facility (XFEL) plans to demonstrate the operation of SCUs in X-ray free-electron lasers (FELs ...
Sara Casalbuoni, Suren Abeghyan, Levon Alanakyan, Johann Baader, Serena Barbanotti, Winfried Decking, Massimiliano Di Felice, Hans-Jörg Eckoldt, Uwe Englisch, Gianluca Geloni, Vanessa Grattoni, Andreas Grau, Axel Hauberg, Christian Helwich, Achim Hobl, Kay Jensch, Suren Karabekyan, Daniele La Civita, Sven Lederer, Christoph Lechner, Lutz Lilje, Shan Liu, Barbara Marchetti, Andrew Potter, Tobias Schnautz, Evgeny Schneidmiller, Harald Sinn, Wolfgang Walter, Riko Wichmann, Torsten Wohlenberg, Grigory Yakopov, Mikhail Yakopov, Igor Zagorodnov, René Zimmermann, Pawel Ziolkowski   +34 more
doaj   +1 more source

Author Correction: High-brightness self-seeded X-ray free-electron laser covering the 3.5 keV to 14.6 keV range

Nature Photonics, 2021
A self-seeded X-ray free-electron laser (XFEL) is a promising approach to realize bright, fully coherent free-electron laser (FEL) sources in the hard X-ray domain that have been a long-standing issue with longitudinal coherence remaining challenging. At
I. Nam, C. Min, B. Oh, Gyujin Kim, D. Na, YoungJin Suh, Haeryong Yang, M. Cho, Changbum Kim, Min-Jae Kim, C. Shim, J. Ko, H. Heo, Jaehyun Park, Jangwoo Kim, Sehan Park, G. Park, Seonghan Kim, S. Chun, H. Hyun, Jae Hyuk Lee, K. Kim, I. Eom, S. Rah, D. Shu, K. Kim, S. Terentyev, V. Blank, Y. Shvyd’ko, Sang Jae Lee, Heung-Sik Kang   +30 more
semanticscholar   +2 more sources

Microsecond hydrodynamic interactions in dense colloidal dispersions probed at the European XFEL

IUCrJ, 2021
Many soft-matter systems are composed of macromolecules or nanoparticles suspended in water. The characteristic times at intrinsic length scales of a few nanometres fall therefore in the microsecond and sub-microsecond time regimes.
Francesco Dallari, Avni Jain, Marcin Sikorski, Johannes Möller, Richard Bean, Ulrike Boesenberg, Lara Frenzel, Claudia Goy, Jörg Hallmann, Yoonhee Kim, Irina Lokteva, Verena Markmann, Grant Mills, Angel Rodriguez-Fernandez, Wojciech Roseker, Markus Scholz, Roman Shayduk, Patrik Vagovic, Michael Walther, Fabian Westermeier, Anders Madsen, Adrian P. Mancuso, Gerhard Grübel, Felix Lehmkühler   +23 more
doaj   +1 more source

Pump-probe X-ray holographic imaging of laser-induced cavitation bubbles with femtosecond FEL pulses

Nature Communications, 2021
Cavitation bubbles show many nonlinear characteristics of liquid and gas phase. Here the authors demonstrate coherent diffractive imaging of cavitation bubble using infrared pump and XFEL probe and discuss the formation and evolution of the bubbles.
M. Vassholz, H. P. Hoeppe, J. Hagemann, J. M. Rosselló, M. Osterhoff, R. Mettin, T. Kurz, A. Schropp, F. Seiboth, C. G. Schroer, M. Scholz, J. Möller, J. Hallmann, U. Boesenberg, C. Kim, A. Zozulya, W. Lu, R. Shayduk, R. Schaffer, A. Madsen, T. Salditt   +20 more
doaj   +1 more source

Status and future of the soft X-ray free-electron laser beamline at the SHINE

Frontiers of Physics, 2023
The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under construction and aims at generating X-rays between 0.4 and 25 keV with three FEL beamlines at repetition rates of up to 1 MHz. The soft X-ray FEL beamline, FEL-II, will be
Tao Liu, Nanshun Huang, Hanxiang Yang, Zheng Qi, Kaiqing Zhang, Zhan Gao, Si Chen, C. Feng, Wei Zhang, Hang Luo, Xiaoxi Fu, Hesheng Liu, B. Faatz, H. Deng, Bo Liu, Dong Wang, Zhentang（赵振堂） Zhao   +16 more
semanticscholar   +1 more source

Ultrafast orbital tomography of a pentacene film using time-resolved momentum microscopy at a FEL

Nature Communications, 2022
Ultrafast pulses are useful to investigate the electron dynamics in excited atoms, molecules and other complex systems. Here, the authors measure transient photoelectron momentum maps following the free-electron laser pulse-induced ionization of a ...
Kiana Baumgärtner, Marvin Reuner, Christian Metzger, Dmytro Kutnyakhov, Michael Heber, Federico Pressacco, Chul-Hee Min, Thiago R. F. Peixoto, Mario Reiser, Chan Kim, Wei Lu, Roman Shayduk, Manuel Izquierdo, Günter Brenner, Friedrich Roth, Achim Schöll, Serguei Molodtsov, Wilfried Wurth, Friedrich Reinert, Anders Madsen, Daria Popova-Gorelova, Markus Scholz   +21 more
doaj   +1 more source

Using low dose x-ray speckle visibility spectroscopy to study dynamics of soft matter samples

New Journal of Physics, 2021
We demonstrate the successful application of x-ray speckle visibility spectroscopy (XSVS) experiments to study the dynamics of radiation sensitive, biological samples with unprecedented small x-ray doses of 45 Gy and below.
Johannes Möller, Mario Reiser, Jörg Hallmann, Ulrike Boesenberg, Alexey Zozulya, Hendrik Rahmann, Anna-Lena Becker, Fabian Westermeier, Thomas Zinn, Michael Sprung, Theyencheri Narayanan, Christian Gutt, Anders Madsen   +12 more
doaj   +1 more source

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