A5088360745- Neutrino Physics Research
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Atomic and Molecular Physics
- Laser-Matter Interactions and Applications
- Astrophysics and Cosmic Phenomena
- Traffic and Road Safety
- Mass Spectrometry Techniques and Applications
- Electric and Hybrid Vehicle Technologies
- Safety Warnings and Signage
- Radiation Detection and Scintillator Technologies
- Human-Automation Interaction and Safety
- Real-time simulation and control systems
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Real-Time Systems Scheduling
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Urban Transport and Accessibility
- Winter Sports Injuries and Performance
- Vehicle Dynamics and Control Systems
- Particle Accelerators and Free-Electron Lasers
- Photonic Crystals and Applications
- Advanced Optical Sensing Technologies
RWTH Aachen University
2017-2025
Université Libre de Bruxelles
2024
China Institute of Atomic Energy
2024
Universidade Estadual de Londrina
2024
China Academy of Space Technology
2024
Pontifical Catholic University of Rio de Janeiro
2024
A. Alikhanyan National Laboratory
2024
Beijing Normal University
2024
Université Paris Cité
2019-2021
Sorbonne Université
2019-2021
We report photoelectron energy spectra, momentum, and angular distributions for the strong-field single ionization of lithium by 30-fs laser pulses. For peak intensities between ${10}^{11}$ ${10}^{14}$ W/cm${}^{2}$ at a central wavelength 785 nm, classical over-the-barrier intensity was reached well inside multiphoton regime. The complete vector momenta fragments were recorded reaction microscope with magneto-optically trapped target (MOTREMI). On theoretical side, time-dependent...
Using 22 Na as a radiotracer, mobilities of sodium ions in various types SiO 2 glasses were measured and found to depend on the OH content silica network. Increasing considerably reduces mobility. The effect immobilization is discussed terms an interaction between hydrogen ions, similar “mixed‐alkali effect” alkali silicate glasses. High OH‐containing , structures display lowest diffusivities either or thus indicating properties which are preferential practice, such decreasing ionic...
Double photoionization (DPI) and ionization-excitation (IE) of $\mathrm{Li}(2s)$ $\mathrm{Li}(2p)$, state-prepared aligned in a magneto-optical trap, were explored reaction microscope at the free-electron laser Hamburg (FLASH). From 6 to 12 eV above threshold ($\ensuremath{\hbar}\ensuremath{\omega}=85$, 91 eV), total as well differential DPI cross sections observed critically depend on initial state and, particular, alignment $2p$ orbital with respect VUV-light polarization, whereas no...
We present measurements of resistive and sympathetic cooling ion clouds confined in a Penning trap. For cloud consisting one species, we observe significant deviation from exponential behavior which is explained by an energy-transfer model. The observed simultaneously species shows quadratic dependence on the charge state hence agreement with expectations physics dilute non-neutral plasmas.
In this contribution we report the results of training and local field measurements performed in a liquid helium bath ANKA superconducting undulator. The period length is 15 mm coils are 1.5 m long. key specifications system an undulator parameter K higher than 2 (for magnetic gap 5 mm) phase error smaller 3.5 degrees. planned to be installed storage ring by beginning 2011 light source new beamline NANO for high resolution X-ray diffraction.
Abstract We present technical design and characteristics of the magnetic shield developed for 20" PMTs low-background OSIRIS facility. A ribbon amorphous alloy with extreme permeability was used in its design, providing excellent efficiency screening Earth's field a relatively small amount material. The mass materials is crucial to construction facilities because radioactive backgrounds. Using cost-efficient compared other methods field.
A joint experimental and theoretical study of four-photon ionization Li is performed using a pump-probe setup with the laser frequency tuned in between excitation energies $2s$--$4p$ $2s$--$4f$ three-photon transitions. The three-dimensional photoelectron momentum pattern recorded as function delay time two otherwise identical pulses. process modeled by numerically solving time-dependent Schr\"odinger equation. While complicated interference patterns arise electron spectrum when pulses...
In the HITRAP facility at GSI it is planned to store 105 highly charged ions up U92+ in a cryogenic Penning trap and cool them down 4 K via electron resistive cooling. During cooling process ion density increases characteristics of cloud are increasingly determined by Coulomb interactions. We present parallel algorithm for simulation clouds cylindrical traps. For we run an Open Cl code on single GPU device.
This paper briefly describes the latest achievements of a new functional vehicle system to overcome range anxiety problem Fully Electric Vehicles (FEV). is primarily achieved by integrated control and operation strategies optimize driving range. The main focus these cooperated electric drivetrain regenerative braking system. diverse source information with on-board off-board sensors, including navigation system, satellite information, car-to-car, car-to-infrastructure communication radar...
The measurements of proton–nucleus scattering and high resolution neutrino–nucleus interaction imaging are key in reducing neutrino oscillation systematic uncertainties future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed operated at the Royal Holloway University London CERN as a first step development HPTPC that is capable performing these part long-baseline experiment, such Deep Underground Neutrino Experiment. In this paper, we describe design...
Objective: On-bike systems warning cyclists about critical situations are a promising approach to improve safety. The chosen modality might strongly influence whether the cyclist accepts system. So far, cyclists' preferences have not been analyzed based on field data. They were only through web-based surveys or simulator study without including three most signal types (i.e., visual, auditory and vibro-tactile). This aims evaluate for transmitting information experience of signals in...
This paper briefly describes the latest achievements of a new functional vehicle system to overcome range anxiety problem Fully Electric Vehicles (FEV). is primarily achieved by integrated control and operation strategies optimize driving range. The main focus these cooperated electric drivetrain regenerative braking system. diverse source information with on-board off-board sensors, including navigation system, satellite information, car-to-car, car-to-infrastructure communication radar...
Measurements of proton-nucleus scattering and high resolution neutrino-nucleus interaction imaging are key to reduce neutrino oscillation systematic uncertainties in future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed operated at Royal Holloway University London CERN as a first step the development HPTPC capable performing these measurements part long-baseline experiment such Deep Underground Neutrino Experiment. In this paper we describe design...
HITRAP is a facility at GSI in Darmstadt for decelerating, cooling and storing heavy, highly charged ions. It designed to decelerate beam of A/q < 3 particles with an energy 4 MeV per nucleon as provided by the heavy ion storage ring ESR. HITRAP's decelerating linear accelerator (linac) will ions down 6 keV then inject them into Penning trap cooling. The capture bunches up 105 U92+ flight, cool store them. After extraction from cooler trap, vertical line (VBL) transports cold experiments....
A systematic study of multi-photon ionization (MPI) atomic lithium in ultra-short and intense near-infrared laser pulses has been conducted both experimentally theoretically. The cross section was measured for intensities spanning across the transition from MPI to over-the-barrier (OBI). It turns out that this manifests itself a substantial change photo-electron angular distributions. In second pump-probe experiments exciting bound wave packets probing their time evolution by were performed.