Eur.XFEL

 2017-08-3116:31 [PUBDB-2017-10204] Journal Article et al Coherent soft X-ray diffraction imaging of coliphage PR772 at the Linac coherent light source Scientific data 4, 170079 (2017) [10.1038/sdata.2017.79]   Single-particle diffraction from X-ray Free Electron Lasers offers the potential for molecular structure determination without the need for crystallization. In an effort to further develop the technique, we present a dataset of coherent soft X-ray diffraction images of Coliphage PR772 virus, collected at the Atomic Molecular Optics (AMO) beamline with pnCCD detectors in the LAMP instrument at the Linac Coherent Light Source. [...] OpenAccess: PDF PDF (PDFA); 2017-08-3108:45 [PUBDB-2017-10155] Report/Journal Article et al First functionality tests of a 64 × 64 pixel DSSC sensor module connected to the complete ladder readout [arXiv:1701.03613] 18th International Workshop on Radiation Imaging Detectors (IWORID 2016), Meeting locationBarcelona, Spain, 3 Jul 2016 - 7 Jul 2016 Journal of Instrumentation 12(03), C03025 - C03025 (2017) [10.1088/1748-0221/12/03/C03025]   The European X-ray Free Electron Laser (XFEL.EU) will provide every 0.1 s a train of 2700 spatially coherent ultrashort X-ray pulses at 4.5 MHz repetition rate. The Small Quantum Systems (SQS) instrument and the Spectroscopy and Coherent Scattering instrument (SCS) operate with soft X-rays between 0.5 keV–6 keV. [...] Restricted: PDF PDF (PDFA); 2017-08-0915:15 [PUBDB-2017-09033] Journal Article et al Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser Scientific reports 7(1), 7253 (2017) [10.1038/s41598-017-07069-z]   The advent of x-ray free electron lasers has extended the unique capabilities of resonant x-ray spectroscopy techniques to ultrafast time scales. Here, we report on a novel experimental method that allows retrieving with a single x-ray pulse the time evolution of an ultrafast process, not only at a few discrete time delays, but continuously over an extended time window [...] OpenAccess: PDF PDF (PDFA); 2017-08-0814:44 [PUBDB-2017-08920] Contribution to a conference proceedings/Contribution to a book et al Terahertz-induced optical birefringence in liquid water CLEO: Science and Innovations in Proceedings Conference on Lasers and Electro-OpticsConference on Lasers and Electro-Optics, CLEO 2017, Meeting locationSan Jose,California, USA, 14 May 2017 - 19 May 2017 Washington, D.C. : OSA, STu3J.8 (2017) [10.1364/CLEO_SI.2017.STu3J.8] special issue: "CLEO: Science and Innovations"   We have observed optical birefringence in neat water induced by single-cycle intense terahertz pulses. The refractive index changes are explained by the electronic polarizability modulated by molecular orientation driven by the strong terahertz electric field.. Restricted: PDF PDF (PDFA); 2017-07-2510:57 [PUBDB-2017-08413] Journal Article et al Single-shot determination of focused FEL wave fields using iterative phase retrieval Optics express 25(15), 17892 - 17903 (2017) [10.1364/OE.25.017892]   Determining fluctuations in focus properties is essential for many experiments at Self-Amplified-Spontaneous-Emission (SASE) based Free-Electron-Lasers (FELs), in particular for imaging single non-crystalline biological particles. We report on a diffractive imaging technique to fully characterize highly focused, single-shot pulses using an iterative phase retrieval algorithm, and benchmark it against an existing Hartmann wavefront sensor. [...] Fulltext: PDF PDF (PDFA); 2017-06-2310:06 [PUBDB-2017-05924] Journal Article et al Statistical properties of a free-electron laser revealed by Hanbury Brown?Twiss interferometry Physical review / A 95(2), 023843 (2017) [10.1103/PhysRevA.95.023843]   We present a comprehensive experimental analysis of statistical properties of the self-amplified spontaneous emission free-electron laser (FEL) FLASH by means of Hanbury Brown and Twiss interferometry. The experiments were performed at FEL wavelengths of 5.5, 13.4, and 20.8 nm [...] OpenAccess: PDF PDF (PDFA); 2017-06-1512:49 [PUBDB-2017-05074] Journal Article et al Quantifying Angular Correlations between the Atomic Lattice and the Superlattice of Nanocrystals Assembled with Directional Linking Nano letters 17(6), 3511 - 3517 (2017) [10.1021/acs.nanolett.7b00584]   We show that the combination of X-ray scatteringwith a nanofocused beam and X-ray cross correlation analysis is anefficient way for the full structural characterization of mesocrystallinenanoparticle assemblies with a single experiment. We analyze severalhundred diffraction patterns at individual sample locations, that is,individual grains, to obtain a meaningful statistical distribution of thesuperlattice and atomic lattice ordering. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2017-06-0910:53 [PUBDB-2017-04587] Journal Article et al Mapping few-femtosecond slices of ultra-relativistic electron bunches Scientific reports 7(1), 2431 (2017) [10.1038/s41598-017-02184-3]   Free-electron lasers are unique sources of intense and ultra-short x-ray pulses that led to major scientific breakthroughs across disciplines from matter to materials and life sciences. The essential element of these devices are micrometer-sized electron bunches with high peak currents, low energy spread, and low emittance. [...] OpenAccess: PDF PDF (PDFA); 2017-06-0817:06 [PUBDB-2017-04558] Journal Article et al Communication: Direct evidence for sequential dissociation of gas-phase Fe(CO)$_5$ via a singlet pathway upon excitation at 266 nm The journal of chemical physics 146(21), 211103 (2017) [10.1063/1.4984774]   We prove the hitherto hypothesized sequential dissociation of Fe(CO)$_5$ in the gas phase upon photoexcitation at 266 nm via a singlet pathway with time-resolved valence and core-level photoelectron spectroscopy with an x-ray free-electron laser. Valence photoelectron spectra are used to identify free CO molecules and to determine the time constants of stepwise dissociation to Fe(CO)$_4$ within the temporal resolution of the experiment and further to Fe(CO)$_3$ within 3 ps [...] OpenAccess: PDF PDF (PDFA); 2017-06-0614:18 [PUBDB-2017-04342] Contribution to a conference proceedings et al OCELOT as a Framework for Beam Dynamics Simulations of X-RAY Sources 8th International Particle Accelerator Conference, IPAC17, Meeting locationCopenhagen, Denmark, 15 May 2017 - 19 May 2017 4 p. (2017) [10.3204/PUBDB-2017-04342]   We describe the OCELOT open source project focusing on new beam dynamics simulation capabilities of the whole machine in modern electron-based x-ray sources. Numerical approaches for particle tracking and field calculations are discussed. [...] OpenAccess: PDF PDF (PDFA);