FS-CFEL-1

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2018-06-15
11:35
OpenAccess [PUBDB-2018-02283] Contribution to a conference proceedings
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Characterization of Polarization-Dependent Emittance From an Array of Au Nanorods using Velocity Map Imaging Spectrometer
9th International Particle Accelerator Conference, IPAC 2018, VancouverVancouver, Canada, 30 Apr 2018 - 4 May 20182018-04-302018-05-04 , 3 pp. () [10.3204/PUBDB-2018-02283]  GO
Electron beams of high quality, e.g., low emittance, are of crucial importance for cutting-edge scientific instruments, such as x-ray free electron lasers (XFELs) and ultrafast electron diffraction (UED) setups. A velocity-map-imaging (VMI) spectrometer was implemented to characterize the intrinsic root-mean-square (rms) normalized emittance from photocathodes. [...]
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2018-05-29
14:42
OpenAccess [PUBDB-2018-02134] Report/Journal Article
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Observation of different reactivities of para and ortho-water towards trapped diazenylium ions
[arXiv:1804.05925]
Water is one of the most fundamental molecules in chemistry, biology and astrophysics. It exists as two distinct nuclear-spin isomers, para- and ortho-water, which do not interconvert in isolated molecules. [...]
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2018-05-14
15:17
OpenAccess [PUBDB-2018-01956] Journal Article
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Time-resolved inner-shell photoelectron spectroscopy: From a bound molecule to an isolated atom
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 [...]
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2018-05-08
16:04
OpenAccess [PUBDB-2018-01927] Master Thesis
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Stark effect influenced rotational coherence spectroscopy
, 90 pp. () [10.3204/PUBDB-2018-01927] = Masterarbeit, University of Hamburg, 2018  GO
Rotationally cooled molecules offer versatile applications. However, many of thoseexperiments rely on a knowledge about the occupation of rotational states $g_J$ withdistinct rotational angular momentum quantum numbers J in the molecular probe. [...]
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2018-05-08
09:10
arXiv [PUBDB-2018-01916] Report/Journal Article
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Mapping the Complete Reaction Path of a Complex Photochemical Reaction
[arXiv:1805.02170]
We probe the dynamics of dissociating $CS^2$ molecules across the entire reaction pathway upon excitation. Photoelectron spectroscopy measurements using laboratory-generated femtosecond extreme ultraviolet pulses monitor the competing dissociation, internal conversion, and intersystem crossing dynamics. [...]
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2018-04-17
14:32
DBCoverage [PUBDB-2018-01731] Journal Article
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Femtosecond X-ray coherent diffraction of aligned amyloid fibrils on low background graphene
Here we present a new approach to diffraction imaging of amyloid fibrils, combining a free-standing graphene support and single nanofocused X-ray pulses of femtosecond duration from an X-ray free-electron laser. Due to the very low background scattering from the graphene support and mutual alignment of filaments, diffraction from tobacco mosaic virus (TMV) filaments and amyloid protofibrils is obtained to 2.7 Å and 2.4 Å resolution in single diffraction patterns, respectively. [...]
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2018-04-06
14:16
OpenAccess [PUBDB-2018-01637] Journal Article
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Dose efficient Compton X-ray microscopy
Optica 5(4), 450 - 457 () [10.1364/OPTICA.5.000450]  GO
X-ray imaging techniques have proven invaluable to study biological systems at high resolution due to the penetration power and short wavelength of this radiation. In practice, the resolution and sensitivity of current X-ray imaging techniques are not limited by the performance of optics or image-recovery methods but by radiation damage. [...]
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2018-03-23
11:09
OpenAccess [PUBDB-2018-01536] Journal Article
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RichMol: A general variational approach for rovibrational molecular dynamics in external electric fields
A general variational approach for computing the rovibrational dynamics of polyatomic molecules in thepresence of external electric fields is presented. Highly accurate, full-dimensional variational calculationsprovide a basis of field-free rovibrational states for evaluating the rovibrational matrix elements of high-rankCartesian tensor operators, and for solving the time-dependent Schrödinger equation. [...]
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2018-03-21
13:57
[PUBDB-2018-01511] Conference Presentation (Invited)

Strong-field ionization of laser-aligned molecules
82. Jahrestagung der DPG und DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Plasmen (SAMOP), DPG-Frühjahrstagung, Friedrich-Alexander-Universität Erlangen-NürnbergErlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, 4 Mar 2018 - 9 Mar 20182018-03-042018-03-09
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2018-03-21
13:48
[PUBDB-2018-01510] Conference Presentation (Invited)

H$\mathrm{_2}$O fundamentals from symmetry to chemical reactions
XVII. DESY Research Course 2018: Trends in Water Research, DESY HamburgHamburg, DESY Hamburg, Germany, 26 Feb 2018 - 1 Mar 20182018-02-262018-03-01
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