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2020-09-07
12:02

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2020-09-04
12:14

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2020-09-03
10:12

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2020-09-01
17:28
[PUBDB-2020-03185] Journal Article

Development of photochemical and electrochemical cells for operando X-ray absorption spectroscopy during photocatalytic and electrocatalytic reactions
Photochemical and electrochemical reactions are highly relevant processes for (i) transforming chemicals (e.g. photoreduction of isopropanol to acetone, electrochemical hydrogenation of benzaldehyde to benzyl alcohol, etc.), and (ii) sustainable energy production (e.g. [...]
ddc:540

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2020-08-19
11:38
[PUBDB-2020-03042] Journal Article
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60 fs, 1030 nm FEL pump-probe laser based on a multi-pass post-compressed Yb:YAG source
This paper reports on nonlinear spectral broadening of 1.1 ps pulses in a gas-filled multi-pass cell to generate sub-100 fs optical pulses at 1030 nm and 515 nm at pulse energies of 0.8 mJ and 225 μJ, respectively, for pump-probe experiments at the free electron laser FLASH. Combining a 100 kHz Yb:YAG laser with 180 W in-burst average power with a post-compression platform enables reaching simultaneously high average powers and short pulse durations for high-repetition rate FEL pump-probe experiments..
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2020-08-12
19:13
[PUBDB-2020-02997] Journal Article
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CRL optics and silicon drift detector for P06 Microprobe experiments at 35 keV
A provisional setup for X-ray microprobe experiments at 35 keV is described. It is based on compoundrefractive lenses (CRLs) for nanofocusing and a Vortex silicon drift detector with 2 mm sensorthickness for increased sensitivity at high energies. [...]
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2020-07-30
10:07
DBCoverage [PUBDB-2020-02867] Journal Article

Photon statistics and signal to noise ratio for incoherent diffraction imaging
Intensity interferometry is a well known method in astronomy. Recently, a related method called incoherent diffractive imaging (IDI) was proposed to apply intensity correlations of x-ray fluorescence radiation to determine the 3D arrangement of the emitting atoms in a sample. [...]
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2020-07-28
11:16
DBCoverage [PUBDB-2020-02856] Journal Article
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Highly Scalable Multicycle THz Production with a Homemade Periodically Poled Macroscrystal
Communications Physics -, - ()  GO
The THz regime is widely appealing across many disciplines including solid-state physics, life sciences, and increasingly in particle acceleration.Multicycle THz pulses are typically formed via optical rectification in periodically poled crystals. However the manufacturing procedures of these crystals limit their apertures to below $\sim$1 cm, which from damage limitations of the crystal, limits the total pump power which can be employed, and ultimately, the total THz power which can be produced. [...]
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2020-07-23
15:01
[PUBDB-2020-02826] Journal Article
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Nitrogen Infusion R&D at DESY - A Case Study on Cavity Cut-Outs
A first series of nitrogen infusion runs of 1:3 GHz single-cell cavities at DESY resulted in an unexpected and severedeterioration observed during the vertical cold test. To investigate the origin of the deterioration, one of the cavitiesunderwent extensive radio-frequency measurements and a temperature- and magnetic field-mapping was performedin collaboration with the Helmholtz-Zentrum Berlin. [...]
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2020-06-17
14:17

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