A5033959317- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Laser-induced spectroscopy and plasma
- Nuclear reactor physics and engineering
- Advanced Materials Characterization Techniques
- Ion-surface interactions and analysis
- Laser-Matter Interactions and Applications
- Atomic and Subatomic Physics Research
- Advanced X-ray and CT Imaging
- Fault Detection and Control Systems
- Fusion materials and technologies
- Graphite, nuclear technology, radiation studies
- Radiation Detection and Scintillator Technologies
Technical University of Darmstadt
2020-2025
Abstract Neutrons are a valuable tool for non-destructive material investigation as their interaction cross sections with matter isotope sensitive and can be used complementary to x-rays. So far, most neutron applications have been limited large-scale facilities such nuclear research reactors, spallation sources, accelerator-driven sources. Here we show the design optimization of laser-driven source in epi-thermal thermal energy range, which is non-invasive analysis. Neutron resonance...
Abstract Reliable radiographic methods for characterizing nuclear waste packages non-destructively (without the need to open containers) have potential significantly contribute safe handling and future disposal options, particularly legacy of unknown content. Due required shielding containers characterize materials consisting light elements, X-ray are not suitable. Here, energy-resolved MeV neutron radiography is demonstrated as a first-of-its-kind application non-destructive remote...
Numerous experiments on laser-driven proton acceleration in the MeV range have been performed with a large variety of laser parameters since its discovery around year 2000. Both and simulations revealed that protons are accelerated up to maximum cut-off energy during this process. Several attempts made find universal model for target normal sheath regime. While these models can qualitatively explain most experimental findings, they hardly be used as predictive models, example, protons, many...
Laser-based particle accelerators have been an active field of research for over two decades moving from laser systems capable one shot every hour to able deliver repetition rates in the Hz regime. Based on advancements technology, corresponding detection methods need develop single multiple use with high readout speed. Here, we present online compact tracker particles using scintillators nine resolvable energy levels and a spatial resolution 3.6 × mm2 whole area. This paper describes design...
With the phasing out of many research reactors over upcoming years, a shortcoming small and medium sized neutron sources is to be expected. Laser-driven have potential fill this void, with enormous progress being made in laser technology past years. Upcoming petawatt lasers high repetition rates up 10 Hz promise tremendous increase flux. In paper, setup developed optimized conduct resonance spectroscopy at laser-driven source. This then evaluated an experimental campaign PHELIX system. Laser...
The development of compact neutron sources for applications is extensive and features many approaches. For ion-based approaches, several projects with different parameters exist. This article focuses on production below the spallation barrier proton deuteron beams arbitrary energy distributions kinetic energies from 3 MeV to 97 MeV. model makes it possible compare source concepts against each other quickly. contribution derives a predictive using Monte Carlo simulations (an order 50,000...
Abstract Neutron sources based on laser-accelerated particles have attracted interest as they may provide a compact, cost-effective alternative to conventional sources. Recently, laser-driven neutron sources, ion acceleration, demonstrated resonance spectroscopy, imaging and in first proof-of-principle experiments. To drive these efficiently with ions, high laser pulse energies, the range of tens hundreds Joules, sub-ps duration are needed. This requirement currently limits ion-based...
Abstract Laser-driven neutron sources (LDNS) are an emerging technology with significant potential. The most promising types of LDNS based on laser wakefield acceleration or target normal sheath acceleration, driven in a “pitcher-catcher” configuration. In this publication, we estimate the performance once they have been optimized for industrial-scale usage and identify which applications can be used. For purpose, evaluate current developments three systems that used to cover relevant...
Compact laser-based neutron sources have attracted great interest in the last years due to a growing field of applications. Neutrons interact via nuclear force which results relatively large penetration depths and isotope specific interaction cross-sections. This can be used identify isotopic composition samples. allows applications like inspection cargo containers for fissile material or explosives as well tracing artifacts their geological origin. While conventional such reactors...
The development of compact neutron sources for applications is extensive and features many approaches. Let alone ion-based approaches, several projects with different parameters exist. This article focuses on production below the spallation barrier arbitrary light ion beams. With this model, it possible to compare source concepts against each other quickly. contribution derives a predictive model using Monte Carlo simulations (50k simulations) deep neural networks. can skip necessary...