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2025-02-05
20:03
OpenAccess [FZJ-2025-00035] Journal Article
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A concept of a para-hydrogen-based cold neutron source for simultaneous high flux and high brightness
A novel concept of cold neutron source employing chessboard or staircase assemblies of high-aspect-ratio rectangular para-hydrogen moderators with well-developed and practically fully illuminated surfaces of the individual moderators is proposed. An analytic approach for calculating the brightness of para-hydrogen moderators is introduced. [...]
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2025-02-05
20:03
OpenAccess [FZJ-2024-07445] Journal Article
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Ground-state magnetic structures of topological kagome metals R V 6 Sn 6 ( R = Tb , Dy , Ho , Er )
Magnetic kagome metals have attracted tremendous research interests recently, because they represent an ideal playground for exploring the fascinating interplay between their intrinsically inherited topologically nontrivial electron band structures, magnetism and electronic correlation effects, and the resultant novel electronic/magnetic states and emergent excitations. In this work, we report a comprehensive single-crystal neutron diffraction investigation of the ground-state magnetic structures of the recently discovered V-based topological kagome metals 𝑅⁢V6⁢Sn6 (R = Tb, Dy, Ho, Er) [...]
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2025-02-05
20:03
OpenAccess [FZJ-2024-03508] Journal Article
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Thermal Density Fluctuations and Polymorphic Phase Transitions of Ethane (C 2 D 6 ) in the Gas/Liquid and Supercritical States
The phase behavior of the liquid C2D6 below and above the critical point was investigated using small-angle neutron scattering (SANS) in temperature and pressure ranges from 10 to 45 °C and 20 to 126 bar, respectively. The scattering of thermal fluctuations of the molecular density was determined and thus the gas–liquid and Widom lines. [...]
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2024-10-24
20:01

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2024-10-16
20:01

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2024-08-19
09:26

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2024-07-23
20:01
OpenAccess [FZJ-2024-04640] Journal Article
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Learning from virtual experiments to assist users of Small Angle Neutron Scattering in model selection
In this work, we combine the advantages of virtual Small Angle Neutron Scattering (SANS) experiments carried out by Monte Carlo simulations with the recent advances in computer vision to generate a tool that can assist SANS users in small angle scattering model selection. We generate a dataset of almost 260.000 SANS virtual experiments of the SANS beamline KWS-1 at FRM-II, Germany, intended for Machine Learning purposes. [...]

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2024-06-15
20:03
OpenAccess [FZJ-2024-02173] Journal Article
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Long-range magnetic order in CePdAl$_3$ enabled by orthorhombic deformation
We investigate the effect of structural deformation on the magnetic properties of orthorhombic CePdAl3 in relation to its tetragonal polymorph. Utilizing x-ray and neutron diffraction, we establish that the crystal structure has the 𝐶⁢𝑚⁢𝑐⁢𝑚 space-group symmetry and exhibits pseudotetragonal twinning. [...]

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2024-05-29
20:03

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2024-04-14
20:02

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