Eur.XFEL

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2018-05-31
16:00
OpenAccess [PUBDB-2018-02164] Journal Article
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Enzyme intermediates captured “on the fly” by mix-and-inject serial crystallography
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2018-05-31
10:11
OpenAccess [PUBDB-2018-02152] Journal Article
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Molecular polarizability anisotropy of liquid water revealed by terahertz-induced transient orientation
Reaction pathways of biochemical processes are influenced by the dissipative electrostatic interaction of the reagents with solvent water molecules. The simulation of these interactions requires a parametrization of the permanent and induced dipole moments. [...]
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2018-05-23
13:27
OpenAccess [PUBDB-2018-02060] Contribution to a conference proceedings
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Status of the Radiation Damage on th European XFEL Undulator Systems
9th International Particle Accelerator Conference, IPAC’18, VancouverVancouver, Canada, 29 Apr 2018 - 4 May 20182018-04-292018-05-04 , 4 pp. () [10.3204/PUBDB-2018-02060]  GO
The European XFEL GmbH is a new X-ray FEL user facility and started lasing in 2017. Three movable gap SASE Undulator Systems based on hybrid NdFeB permanent magnet technology were built. [...]
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2018-05-15
11:13
OpenAccess [PUBDB-2018-01959] Journal Article
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Coherent X-rays reveal the influence of cage effects on ultrafast water dynamics
The dynamics of liquid water feature a variety of time scales, ranging from extremely fast ballistic-like thermal motion, to slower molecular diffusion and hydrogen-bond rearrangements. Here, we utilize coherent X-ray pulses to investigate the sub-100 fs equilibrium dynamics of water from ambient conditions down to supercooled temperatures [...]
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ddc:500
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2018-05-14
15:05
[PUBDB-2018-01953] Journal Article
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Time-resolved ion imaging at free-electron lasers using TimepixCam
The application of a novel fast optical-imaging camera, TimepixCam, to molecular photoionization experiments using the velocity-map imaging technique at a free-electron laser is described. TimepixCam is a 256 × 256 pixel CMOS camera that is able to detect and time-stamp ion hits with 20 ns timing resolution, thus making it possible to record ion momentum images for all fragment ions simultaneously and avoiding the need to gate the detector on a single fragment [...]
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2018-05-02
12:42
OpenAccess [PUBDB-2018-01892] Journal Article
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Fast XANES fluorescence imaging using a Maia detector
A new fast X-ray absorption spectroscopy scanning method was recently implemented at the Hard X-ray Microprobe endstation P06, PETRA III, DESY, utilizing a Maia detector. Spectromicroscopy maps were acquired with spectra for X-ray absorption near-edge structure (XANES) acquisition in the sub-second regime. [...]
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2018-04-18
18:06
[PUBDB-2018-01788] Journal Article
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Attosecond time–energy structure of X-ray free-electron laser pulses
Nature photonics 12(4), 215 - 220 () [10.1038/s41566-018-0107-6]  GO
The time–energy information of ultrashort X-ray free-electron laser pulses generated by the Linac Coherent Light Source is measured with attosecond resolution via angular streaking of neon 1s photoelectrons. The X-ray pulses promote electrons from the neon core level into an ionization continuum, where they are dressed with the electric field of a circularly polarized infrared laser. [...]
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2018-02-02
09:02
DBCoverage [PUBDB-2018-00999] Journal Article
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Diffraction based Hanbury Brown and Twiss interferometry at a hard x-ray free-electron laser
X-ray free-electron lasers (XFELs) provide extremely bright and highly spatially coherent x-rayradiation with femtosecond pulse duration. Currently, they are widely used in biology and materialscience. [...]
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2018-01-23
10:34
Embargoed OpenAccess [PUBDB-2018-00754] Journal Article
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Transferring the entatic-state principle to copper photochemistry
Nature chemistry 10, 355 – 362 () [10.1038/nchem.2916]  GO
The entatic state denotes a distorted coordination geometry of a complex from its typical arrangement that generates an improvement to its function. The entatic-state principle has been observed to apply to copper electron-transfer proteins and it results in a lowering of the reorganization energy of the electron-transfer process. [...]
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2018-01-12
10:19
[PUBDB-2018-00592] Journal Article
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Materials for x-ray refractive lenses minimizing wavefront distortions
MRS bulletin 42(6), 430 - 436 () [10.1557/mrs.2017.117]  GO
Refraction through curved surfaces, reflection from curved mirrors in grazing incidence, and diffraction from Fresnel zone plates are key hard x-ray focusing mechanisms. In this article, we present materials used for refractive x-ray lenses. [...]
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