A5000028287- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Electrocatalysts for Energy Conversion
- Various Chemistry Research Topics
- Organometallic Complex Synthesis and Catalysis
- Metal complexes synthesis and properties
- Nuclear reactor physics and engineering
- Lanthanide and Transition Metal Complexes
- Recycling and Waste Management Techniques
- Metalloenzymes and iron-sulfur proteins
- Polyoxometalates: Synthesis and Applications
- Spacecraft and Cryogenic Technologies
- Advanced Photocatalysis Techniques
- Nanocluster Synthesis and Applications
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Inorganic Chemistry and Materials
- Advanced NMR Techniques and Applications
- Metal-Catalyzed Oxygenation Mechanisms
- Copper-based nanomaterials and applications
- Organic Light-Emitting Diodes Research
- Microplastics and Plastic Pollution
- Quantum, superfluid, helium dynamics
Forschungszentrum Jülich
2023-2025
Friedrich Schiller University Jena
2021-2024
Molina Center for Energy and the Environment
2022
Helmholtz Institute Jena
2021-2022
TU Dresden
2019-2020
Abstract This work compares simulated and measured neutron time-of-flight spectra for a cold moderator with varying para-hydrogen concentrations (25%, 50%, 90% 99.9%) embedded in polyethylene thermal moderator. The primary neutrons are generated from the interaction of 45MeV protons tantalum target. simulations were performed using several Monte Carlo codes (MCNP, PHITS, McStas, VITESS, KDSource) together nuclear data ENDF/B-VII.1 JENDL $$-$$ <mml:math...
The production of hydrogen by efficient, low-cost, and integrated photoelectrochemical water splitting processes represents an important target for the ecological transition. This challenge can be addressed thanks to bioinspired chemistry artificial photosynthesis approaches designing dye-sensitized photocathodes production, incorporating first-row transition metal-based catalysts. present work describes preparation characterization a NiO photocathode sensitized with phosphonate-derivatized...
Abstract In octahedral complexes, molybdenum(0) has the same 4d 6 valence electron configuration as ruthenium(II), which is beneficial for establishing energetically low‐lying metal‐to‐ligand charge transfer (MLCT) excited states. Those MLCT states often show luminescence, and they can furthermore undergo photoinduced energy reactions that are of interest in context solar conversion, sensing, or photocatalysis. Molybdenum roughly 100 times more abundant than ruthenium, it seems desirable to...
The High Brilliance neutron Source (HBS) is a project for next generation research facility, based on new concepts and recent technological advancements. As elementary processes it uses neither fission nor spallation, but instead low energy nuclear reactions in very compact Target-ModeratorReflector (TMR) assembly. Our facility design results efficient production of beams with high brightness. Key features HBS are: (i) competitive instrument performance, (ii) comparatively construction...
The study’s objective is to examine the neutron temperature response, using liquid and solid ethane at various cryogenic temperatures evaluate effectiveness of as a cold moderator in compact systems. experimental measurements were carried out 170 K, 135 100 70 50 25 15 10 K. Time-of-flight spectra measured with an instrument JULIC Neutron Platform. effective spectrum emitted are determined by fitting Maxwellian distribution function wavelength.
A significant contribution to the enhancement of neutron brilliance achievable with Compact Accelerator-driven Neutron Sources (CANS) can be made by an optimized cold moderator design. When using liquid para-H 2 as moderating medium, concept low-dimensional moderators employed increase brightness (as currently foreseen at European Spallation Source ESS). Para-H shows a drop in scattering cross section about one order magnitude around 15 meV, resulting large deviation between mean free paths...
The design of photoactive systems capable storing and relaying multiple electrons is highly demanded in the field artificial photosynthesis, where transformations interest rely on multielectronic redox processes. photophysical properties ruthenium photosensitizer [(bpy)2 Ru(oxim-dppqp)]2+ (Ru), two coupled to protons π-extended oxim-dppqp ligand under light-driven conditions, are investigated by means excitation wavelength-dependent resonance Raman transient absorption spectroscopies,...
High Current Accelerator driven Neutron Sources (HiCANS) are a cost-efficient alternative for future large scale neutron facilities. They excel in transforming neutrons released by the primary nuclear reaction into spectral range usable applications. In particular, cost of target station represents only minor fraction overall construction due to lower energy neutrons, which requires less shielding. can be designed provide optimized pulse and properties applications scattering, analytics...
For the majority of low temperature hydrogen applications ortho- to parahydrogen (o-p-H2) spin configuration plays a vital role. Examples are liquid storage (heat conversion) or neutron moderation (unequal cross section). Decreasing temperatures below ambient imply higher equilibrium p-H2 ratios. Often, rapid conversion close is beneficial. The rather slow natural can be sped up for example by catalytic contact paramagnetic substances. this, paper gives an overview on published isothermal...
Abstract Molecular charge accumulating systems that act as both, photosensitizer and electron storage unit, are of interest in the context multielectron redox processes, e. g. solar fuel production. To this end, photophysical properties RuL1 , a ruthenium tris‐diimine complex with an alloxazine‐based ligand bioinspired structural motif, were investigated. The study includes absorption, emission, resonance Raman transient absorption spectroscopy combination quantum chemical simulations to...
Microplastics (MP) enter the aquatic environment through both diffuse and point sources, are transported river networks into seas oceans. MP threatens ecosystems present in water, sediment biota. One of main entry paths pollution wastewater treatment plant (WWTP) effluents as well untreated surface runoff combined sewer overflows (CSO). In this study, we aimed to estimate average annual load Seas Oceans for 125 European catchments different sizes. We coupled a mass balance model modified...