A5069660119- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Crystallography and Radiation Phenomena
- High-pressure geophysics and materials
- Radiation Detection and Scintillator Technologies
- Advanced X-ray Imaging Techniques
- Graphene research and applications
- Carbon Nanotubes in Composites
- X-ray Diffraction in Crystallography
- Enzyme Structure and Function
- Advanced ceramic materials synthesis
- Advanced Electron Microscopy Techniques and Applications
- Photosynthetic Processes and Mechanisms
- Electron and X-Ray Spectroscopy Techniques
- Particle accelerators and beam dynamics
- Spectroscopy and Quantum Chemical Studies
- Crystallization and Solubility Studies
- Metallurgical and Alloy Processes
- Protein Structure and Dynamics
- Rare-earth and actinide compounds
- Nuclear reactor physics and engineering
- Radiation Therapy and Dosimetry
- Intermetallics and Advanced Alloy Properties
- Metallurgical Processes and Thermodynamics
- Inertial Sensor and Navigation
HUN-REN Centre for Energy Research
2022-2025
Budapest Neutron Centre
2023
HUN-REN Wigner Research Centre for Physics
2014-2022
Institute for Solid State Physics and Optics
2006-2020
Aarhus University
2020
Université Grenoble Alpes
2020
Institut Néel
2020
Centre National de la Recherche Scientifique
2020
European Spallation Source
2020
Paul Scherrer Institute
2014-2018
The use of metal–organic frameworks in the separator membrane lithium-ion batteries is an interesting subject study for next generation energy storage devices. In this work, different poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) / framework (MOF) based separators were prepared using three distinct MOFs, and properties these membranes studied. selected MOFs MOF-808, UiO-66-NH2 MIL-125 are characterized by sharing a common building block (cluster or linker) possessing relatively...
The analyzer detector system continuous angle multiple energy analysis will be installed on the cold-neutron triple-axis spectrometer RITA-2 at SINQ, PSI. CAMEA is optimized for efficiency in horizontal scattering plane enabling rapid and detailed mapping of excitations. As a novelty design employs series several sequential upward arcs. Each arc set to different, fixed, final scatters neutrons towards position sensitive detectors. Thus, with different energies are recorded simultaneously...
We present the detailed design and performance simulations of BIFROST, a multiplexing indirect neutron time-of-flight spectrometer at European Spallation Source. The instrument allows bandwidth Δλ = 1.74 Å to reach sample. polychromatic flux can 6 × 109 n/s/cm2 while retaining relative energy resolution, δEi/Ei, around 3.5% Ei 5 meV. A fast pulse-shaping chopper for flexibility in primary resolution. For an opening time 0.1 ms, resolution down 0.2% is achieved 12 secondary consists 45...
In this work, we present the conceptual design of backscattering time-of-flight spectrometer MIRACLES approved for construction at long-pulse European Spallation Source (ESS). MIRACLES’s unparalleled combination variable resolution, high flux, extended energy, and momentum transfer (0.2–6 Å−1) ranges will open new avenues neutron spectroscopy. Its remarkable flexibility can be attributed to 3 key elements: time structure low repetition rate ESS source, chopper cascade that tailors moderator...
A development in modern neutron spectroscopy is to avoid the need of large samples. We demonstrate how small samples together with right choice analyser and detector components makes distance collimation an important concept crystal spectrometers. further show that this opens new possibilities where neutrons different energies are reflected by same but counted detectors, thus improving both energy resolution total count rate compared conventional The technique can be combined advanced...
The CAMEA ESS neutron spectrometer is designed to achieve a high detection efficiency in the horizontal scattering plane, and maximize use of long pulse European Spallation Source. It an indirect geometry time-of-flight that uses crystal analysers determine final energy neutrons scattered from sample. Unlike other gemeotry spectrometers will ten concentric arcs analyse at different energies, which can be increased 30 energies by prismatic analysis. In this report we outline instrument...
A key aim of the HighNESS project for European Spallation Source is to enable cutting-edge particle physics experiments. This volume presents a conceptual design report NNBAR experiment. would exploit new cold lower moderator make first search in over thirty years free neutrons converting anti-neutrons. The observation such baryon-number-violating signature be fundamental significance and tackle open questions modern physics, including origin matter-antimatter asymmetry. shows beamline,...
We demonstrate that neutron holography permits us to extend the determination of atomic positions beyond nearest neighbors at least up fourth neighboring shell around cadmium probe atoms alloyed into a lead crystal. The accuracy achieved is sufficient allow quantitative displacements due elastic distortions induced by impurity atoms. derived from holographic data are in good agreement with those expected theoretically Friedel oscillations this system. In addition, qualitative results...
Atomic resolution holography is based on two concepts. Either the emitter of radiation used embedded in sample (internal source concept) or, account optical reciprocity law, detector forms part concept). In many cases, holographic objects (atoms and nuclei) simultaneously adopt roles both detector. Thus, recorded image contains a mixture inside holograms. When reconstructing one type hologram, presence other hologram causes serious distortions. present work, we propose new method, so-called...
The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world’s most powerful pulsed neutron source. Supported by 3 million Euro Research and Innovation Action within EU Horizon 2020 program, design study (HighNESS) has been develop second source located below spallation target. Compared first source, designed for high cold thermal brightness, new optimized...
The continuous angle multiple energy analysis concept is a backend for both time-of-flight and analyzer-based neutron spectrometers optimized spectroscopy with highly efficient mapping in the horizontal scattering plane. design employs series of several upward analyzer arcs placed behind each other, which are set to different final energies allowing wide angular coverage recorded simultaneously. For validation model calculations, prototype was installed at Swiss source SINQ, Paul Scherrer...
The dispersion of single-walled carbon nanotubes in silicon nitride ceramic matrices has been investigated by small angle neutron scattering experiments. In contrast to electron microscopy investigations fracture surfaces, measurements provide information on the bulk within matrix. intensities reveal a decay exponent characteristic surface fractals, which indicates that predominant part can be found loose networks surrounding grains polycrystalline
The recording of holograms with atomic resolution is usually affected by distortions, e.g., due to the finite size source and detector, twin images various imperfections instrument some which have already been analyzed in detail. Amongst others present paper we discuss effect statistical noise. It shown that level noise reconstructed image not influenced number data points hologram their individual counting statistics but determined total counts collected experiment. effects instrumental...
Local distortions of the ideal periodic structure in crystals around impurity atoms play an important role various physical properties materials. The aim this study was to investigate static cadmium a ${\text{SnCd}}_{0.0026}$ single crystal using atomic resolution neutron holography technique. nucleus used as inside detector measure holographic interference pattern from which three-dimensional (3D) arrangement tin nuclei impurities reconstructed. Detailed analysis reconstructed image...
The European Spallation Source, currently under construction in Lund, Sweden, is a multidisciplinary international laboratory. Once completed to full specifications, it will operate the world's most powerful pulsed neutron source. Supported by 3 million Euro Research and Innovation Action within EU Horizon 2020 program, design study (HighNESS) has been develop second source located below spallation target. Compared first source, designed for high cold thermal brightness, new optimized...
The instrumental concept of HERITAGE – a reflectometer with horizontal sample geometry well fitted to the long pulse structure neutron source is presented. It constitutes new class reflectometers achieving unprecedentedly high flux for classical specular reflectometry combined off-specular and grazing incidence small-angle scattering (GISANS), thus resulting in complete 3-d exploration lateral depth structures thin films. This achieved by specially designed guides. In direction...
Neutron scattering device dedicated to neutron holography experiments is described. The operating at a constant wavelength prepared by double focusing monochromator. It equipped highly efficient shielding, proper collimator, Eulerian cradle, monitor detector, gamma-ray, and detectors as well. Relevant software serves control for the measurement data collection. harmonized application of components enumerated above makes our extremely unparalleled. Two atomic resolution holographic carried...