# FS-SCS

 2018-10-1414:42 [PUBDB-2018-03783] Journal Article et al Photoionization of metastable heliumlike $C^{4+}$($1s\,2s\; ^3S_ 1)$ ions: Precision study of intermediate doubly excited states Physical review / A 98(3), 033416 (2018) [10.1103/PhysRevA.98.033416]   In a joint experimental and theoretical endeavor, photoionization of metastable $C^{4+}$($1s\,2s\; ^3S_ 1)$ ions via intermediate levels with hollow, double-K-vacancy configurations $2s2p, 2s3p, 2p3s, 2p3d, 2s4p, 2p4s$, and $2p4d$ has been investigated. High-resolution photon-ion merged-beams measurements were carried out with the resolving power reaching up to 25 800 which is sufficient to separate the leading fine-structure components of the $2s2p^{3}P$ term. [...] OpenAccess: PDF PDF (PDFA); 2018-10-0211:26 [PUBDB-2018-03705] Journal Article et al Megahertz serial crystallography Nature Communications 9(1), 4025 (2018) [10.1038/s41467-018-06156-7]   The new European X-ray Free-Electron Laser is the first X-ray free-electron laser capable of delivering X-ray pulses with a megahertz inter-pulse spacing, more than four orders of magnitude higher than previously possible. However, to date, it has been unclear whether it would indeed be possible to measure high-quality diffraction data at megahertz pulse repetition rates. [...] OpenAccess: PDF PDF (PDFA); 2018-09-0715:47 [PUBDB-2018-03414] Journal Article et al X-ray spectroscopy with variable line spacing based on reflection zone plate optics Optics letters 43(18), 4390 - 4393 (2018) [10.1364/OL.43.004390]   X-ray spectroscopy is a method, ideally suited for investigating the electronic structure of matter, which has been enabled by the rapid developments in light sources and instruments. The x-ray fluorescence lines of life-relevant elements such as carbon, nitrogen, and oxygen are located in the soft x-ray regime and call for suitable spectrometer devices [...] Fulltext: PDF PDF (PDFA); Restricted: PDF PDF (PDFA); 2018-09-0313:45 [PUBDB-2018-03340] Journal Article/Contribution to a conference proceedings et al From Micromolecules’ to Macromolecules’ Structural Dynamics Properties: Ultrafast Chiroscopy with Synchrotron and Free Electron Laser Radiation 30th Meeting of the European Crystallographic Association, ECM-30, BaselBasel, Switzerland, 18 Aug 2016 - 1 Sep 2016 Acta crystallographica / A 72(a1), s410 (2016) [10.1107/S2053273316094018]   Restricted: PDF PDF (PDFA); 2018-08-3010:18 [PUBDB-2018-03255] Journal Article et al XUV double-pulses with femtosecond to 650 ps separation from a multilayer-mirror-based split-and-delay unit at FLASH Journal of synchrotron radiation 25(5), 1517 - 1528 (2018) [10.1107/S1600577518006094]   Extreme ultraviolet (XUV) and X-ray free-electron lasers enable new scientific opportunities. Their ultra-intense coherent femtosecond pulses give unprecedented access to the structure of undepositable nanoscale objects and to transient states of highly excited matter [...] OpenAccess: PDF PDF (PDFA); 2018-08-1318:56 [PUBDB-2018-02939] Journal Article et al ID-Full Field Microscopy of Elastic and Inelastic Scattering with Transmission off-axis Fresnel Zone Plates Microscopy and microanalysis 24(S2), 182 - 183 (2018) [10.1017/S1431927618013260]   Published on 2018-08-10. Available in OpenAccess from 2019-02-10.: PDF PDF (PDFA); Restricted: PDF PDF (PDFA); 2018-08-1017:51 [PUBDB-2018-02898] Journal Article et al Diffractive X-ray Optics for Synchrotrons and Free-Electron Lasers Microscopy and microanalysis 24(S2), 268 - 269 (2018) [10.1017/S1431927618013673]   Published on 2018-08-16. Available in OpenAccess from 2019-02-16.: PDF PDF (PDFA); Restricted: PDF PDF (PDFA); 2018-07-2314:14 [PUBDB-2018-02658] Journal Article et al Soft X-ray Spectroscopy as a Probe for Gas-Phase Protein Structure: Electron Impact Ionization from Within Chemistry - a European journal 24(30), 7631-7636 (2018) [10.1002/chem.201801440]   Preservation of protein conformation upon transfer into the gas phase is key for structure determination of free single molecules, for example using X‐ray free‐electron lasers. In the gas phase, the helicity of melittin decreases strongly as the protein's protonation state increases. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2018-05-1415:17 [PUBDB-2018-01956] Journal Article et al Time-resolved inner-shell photoelectron spectroscopy: From a bound molecule to an isolated atom Physical review / A 97(4), 043429 (2018) [10.1103/PhysRevA.97.043429]   Due to its element and site specificity, inner-shell photoelectron spectroscopy is a widely used technique to probe the chemical structure of matter. Here, we show that time-resolved inner-shell photoelectron spectroscopy can be employed to observe ultrafast chemical reactions and the electronic response to the nuclear motion with high sensitivity. [...] Fulltext: PNG; OpenAccess: PDF PDF (PDFA); 2018-03-2823:34 [PUBDB-2018-01592] Journal Article et al Near-$K$-Edge Double and Triple Detachment of the $\mathrm{F^−}$ Negative Ion: Observation of Direct Two-Electron Ejection by a Single Photon Physical review letters 120(13), 133202 (2018) [10.1103/PhysRevLett.120.133202]   Double and triple detachment of the $\mathrm{F^{−}(1s^{2}2s^{2}2p^{6})}$ negative ion by a single photon have been investigated in the photon energy range 660 to 1000 eV. The experimental data provide unambiguous evidence for the dominant role of direct photodouble detachment with a subsequent single-Auger process in the reaction channel leading to $\mathrm{F^{2+}}$ product ions [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext