Results 61 to 70 of about 14,865 (237)

Single-shot 3D coherent diffractive imaging of core-shell nanoparticles with elemental specificity. [PDF]

open access: yes, 2018
We report 3D coherent diffractive imaging (CDI) of Au/Pd core-shell nanoparticles with 6.1 nm spatial resolution with elemental specificity. We measured single-shot diffraction patterns of the nanoparticles using intense x-ray free electron laser pulses.
Dias, Carlos Sato Baraldi   +31 more
core   +2 more sources

Compact XFEL Schemes

open access: yes, 2012
X-ray radiation is one of the most efficient tools to explore the properties of matter in multidisciplinary domains. Over the past fifty years three generations of synchrotrons have been developed delivering x-ray beams with always shorter wavelength and higher brightness to a rapidly growing users community.
d’Humières, Emmanuel   +1 more
openaire   +4 more sources

Corrugated structure insertion for extending the SASE bandwidth up to 3% at the European XFEL

open access: yes, 2016
The usage of x-ray free electron laser (XFEL) in femtosecond nanocrystallography involves sequential illumination of many small crystals of arbitrary orientation.
Feng, G., Limberg, T., Zagorodnov, I.
core   +1 more source

Anomalous Magnetization Dynamics After Dual Optical Excitation

open access: yesAdvanced Physics Research, EarlyView.
We demonstrate that dual‐pump femtosecond excitation in copper leads to a pronounced, non‐additive change in spin and orbital relaxation dynamics compared to single‐pulse excitation. Time‐resolved magneto‐optical Kerr effect measurements reveal a 2.5× increase in angular momentum decay time, highlighting a new route to ultrafast control of electronic ...
Sergii Parchenko   +2 more
wiley   +1 more source

Cooperative effects in nuclear excitation with coherent x-ray light

open access: yes, 2012
The interaction between super-intense coherent x-ray light and nuclei is studied theoretically. One of the main difficulties with driving nuclear transitions arises from the very narrow nuclear excited state widths which limit the coupling between laser ...
  +21 more
core   +1 more source

Automatic tuning of Free Electron Lasers [PDF]

open access: yes, 2017
Existing FEL facilities often suffer from stability issues: so electron orbit, transverse electron optics, electron bunch compression and other parameters have to be readjusted often to account for drifts in performance of various components.
Agapov, I.   +3 more
core   +1 more source

European XFEL Commissioing Experience

open access: yes, 2017
2017 TESLA Technology Collaboration, TTC 2017, East Lansing, DESY, USA, 20 Feb 2017 - 24 Feb ...
Weise, Hans, Decking, Winfried
openaire   +2 more sources

Simultaneous lasing of Ni Kα and Cu Kα lasers from an alloy foil irradiated with an intense X‐ray free‐electron laser pulse

open access: yesJournal of Synchrotron Radiation, EarlyView.
We successfully achieved simultaneous lasing of 7.48 keV Ni Kα1 and 8.05 keV Cu Kα1 emissions using an intense X‐ray free‐electron laser (XFEL) pulse. This achievement – the realization of simultaneous two‐color X‐ray lasing using a single‐color XFEL pulse – is expected to advance the development of X‐ray lasers and their applications.We report the ...
Yuichi Inubushi   +6 more
wiley   +1 more source

3D atomic structure from a single X-ray free electron laser pulse

open access: yesNature Communications
X-ray Free Electron Lasers (XFEL) are cutting-edge pulsed x-ray sources, whose extraordinary pulse parameters promise to unlock unique applications. Several new methods have been developed at XFELs; however, no methods are known, which allow ab initio ...
Gábor Bortel   +12 more
doaj   +1 more source

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