Publications database

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2024-12-03
09:08
DBCoverage [IMPULSE-2024-00201] Journal Article
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Multievent Correlation with Neutron Volume Detectors
The development of advanced volume detectors for neutron time-of-flight diffractometers offers exciting new possibilities. This work takes advantage of these advances by implementing a novel data preprocessing algorithm, exemplified for the first time with data acquired during the operation of a singular mounting unit of the POWTEX detector placed at the POWGEN instrument (SNS, ORNL, Oak Ridge, TN, USA). [...]
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2024-12-02
15:27
[IMPULSE-2024-00200] Journal Article
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Grazing-incidence small-angle neutron scattering at high pressure (HP-GISANS): a soft matter feasibility study on grafted brush films
Grazing-incidence small-angle neutron scattering (GISANS) under pressure (HP-GISANS) at the solid (Si)–liquid (D2O) interface is demonstrated for the pressure-induced lateral morphological characterization of the nanostructure in thin (<100 nm) soft matter films. We demonstrate feasibility by investigating a hydrophobic {poly[(2,2,3,3,4,4,5,5-octafluoro)pentyl methacrylate]} (POFPMA)–hydrophilic {poly[2-(dimethylamino)ethyl methacrylate]} (PDMAEMA) brush mixture of strong incompatibility between the homopolymers, anchored on Si, at T = 45°C for two pressures, P = 1 bar and P = 800 bar. [...]
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2024-12-01
20:04
[FZJ-2024-06265] Conference Presentation (After Call)
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Asymmetric tube confinement for syndiotactic polypropylene
QENS/WINS 2024, ManchesterManchester, UK, 10 Jun 2024 - 14 Jun 20242024-06-102024-06-14

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2024-11-27
20:05

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2024-11-27
10:46
[IMPULSE-2024-00198] Journal Article
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Ferromagnetic interlayer coupling in FeSe$_{1 − x}$S$_{x}$ superconductors revealed by inelastic neutron scattering
FeSe1−𝑥⁢S𝑥 superconductors are commonly considered layered van der Waals materials with negligible interlayer coupling. Here, using inelastic neutron scattering to study spin excitations in single-crystal samples, we reveal that the magnetic coupling between adjacent Fe layers is ferromagnetic in nature, making the system different from most unconventional superconductors including iron pnictides. [...]
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2024-11-17
20:01

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2024-11-17
20:01
Embargoed OpenAccess [FZJ-2024-05745] Journal Article
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Glass-ceramics and molybdenum doping synergistic approach for Nasicon-type solid-state electrolytes
Advancing energy density, enabling lithium metal anodes, and ensuring unparalleled safety and operational reliability in lithium batteries hinge on advancing inorganic solid-state electrolytes. To overcome current im-pediments, we present an innovative approach that integrates glass-ceramics with a pioneering new Nasicon strategy involving molybdenum doping. [...]

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2024-11-13
16:10
DBCoverage [IMPULSE-2024-00197] Journal Article
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Event-based high-resolution neutron image formation analysis using intensified CMOS cameras
We present a versatile optical setup for high-resolution neutron imaging with an adaptable field of view and magnification that can resolve individual neutron absorption events with an image intensifier and a CMOS camera. Its imaging performance is characterized by evaluating the resolution limits of the individual optical components and resulting design aspects are discussed. [...]
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2024-11-11
18:21
[IMPULSE-2024-00196] Journal Article
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An indirect geometry crystal time-of-flight spectrometer for FRM II
We present a concept for an indirect geometry crystal time-of-flight spectrometer, whichwe propose for a source similar to the FRM-II reactor in Garching. Recently, crystal analyzerspectrometers at modern spallation sources have been proposed and are under construction. [...]
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2024-11-07
12:44
[IMPULSE-2024-00195] Journal Article
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Effect of cryogenic rolling on the microstructure and properties of C70250 copper alloy
The application of cryogenic rolling technology serves to enhance the strength of a material by increasing the density of dislocations and refining the grain size. However, a high density of dislocations can lead to a reduction in its ductility. [...]
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