A5103138955- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Magnetic confinement fusion research
- Laser-Matter Interactions and Applications
- High-pressure geophysics and materials
- Education and Cultural Studies
- Fusion materials and technologies
- Atomic and Molecular Physics
- Particle Detector Development and Performance
- Laser Design and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Advanced Fiber Laser Technologies
- Social Issues in Poland
- Plasma Diagnostics and Applications
- Diverse Academic Research Studies
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Ion-surface interactions and analysis
- Educational and Psychological Assessments
- Language and Culture
- Language Development and Disorders
- Ionosphere and magnetosphere dynamics
- Reading and Literacy Development
- X-ray Spectroscopy and Fluorescence Analysis
Institute of Plasma Physics and Laser Microfusion
2014-2024
Adam Mickiewicz University in Poznań
2007-2018
Institute of Psychology
2017
Institute for Plasma Research
2017
Max Planck Institute for Plasma Physics - Greifswald
2016
Australian National University
2016
Oak Ridge National Laboratory
2016
Physikalisch-Technische Bundesanstalt
2016
University of Opole
2016
CEA Cadarache
2016
Anomalous observations using the fast ignition for laser driven fusion energy are interpreted and experimental theoretical results reported which in contrast to very numerous effects usually observed at petawatt-picosecond interaction with plasmas. These anomalous mechanisms result rather thin blocks (pistons) of these nonlinear (ponderomotive) force highly directed plasmas modest temperatures. The consist space charge neutral ion current densities above 1010A∕cm2. For needs applications...
Abstract Wendelstein 7-X (W7-X), the largest advanced stellarator, is built to demonstrate high power, performance quasi-continuous operation. Therefore, in recent campaign, experiments were performed prepare for long pulse operation, addressing three critical issues: development of stable detachment, control heat and particle exhaust, impact leading edges on plasma performance. The exhaust W7-X realized with help an island divertor, which utilizes large magnetic islands at boundary. This...
Wendelstein 7-X, a superconducting optimized stellarator built in Greifswald/Germany, started its first plasmas with the last closed flux surface (LCFS) defined by 5 uncooled graphite limiters December 2015. At end of 10 weeks long experimental campaign (OP1.1) more than 20 independent diagnostic systems were operation, allowing detailed studies many interesting plasma phenomena. For example, fast neutral gas manometers supported video cameras (including one fast-frame camera frame rates...
We describe a concrete device roadmap towards fault-tolerant quantum computing architecture based on noise-resilient, topologically protected Majorana-based qubits. Our encompasses four generations of devices: single-qubit that enables measurement-based qubit benchmarking protocol; two-qubit uses braiding to perform Clifford operations; an eight-qubit can be used show improvement operation when performed logical qubits rather than directly physical qubits; and topological array supporting...
Basic properties of generation high-current ion beams using the skin-layer ponderomotive acceleration (S-LPA) mechanism, induced by a short laser pulse interacting with solid target are studied. Simplified scaling laws for energies, current densities, beam intensities, and efficiency ions' production derived cases subrelativistic relativistic laser-plasma interactions. The results time-of-flight measurements performed both backward-accelerated from massive forward-accelerated thin foil...
Some applications of fast ions driven by a short (⩽1 ps) laser pulse (e.g. ignition ICF targets, x-ray pumping, laboratory astrophysics research or some nuclear physics experiments) require ion beams picosecond (or shorter) time durations and very high current densities (∼1010 A cm−2 higher). possible way producing with such extreme parameters is ballistic focusing generated target normal sheath acceleration (TNSA) mechanism at relativistic intensities. In this paper we discuss another...
Acceleration of dense matter to high velocities is importance for energy density physics, inertial confinement fusion, or space research. The acceleration schemes employed so far are capable accelerating microprojectiles approaching 1000 km/s; however, the energetic efficiency low. Here, we propose and demonstrate a highly efficient scheme in which projectile placed cavity irradiated by laser beam introduced into through hole then accelerated guiding channel pressure hot plasma produced...
Wendelstein 7-X (W7-X) is a large optimized stellarator (B=2.5T, V=30m3) aiming at demonstrating the reactor relevance of stellarators. In 2015 W7-X will begin its first operation phase (OP1.1) with five inertially cooled inboard limiters made graphite. Assuming heat loads can be spread out evenly between limiters, 1 second discharges 2 MW ECRH heating power could run in OP1.1. The expected plasma parameters sufficient to demonstrate readiness installed diagnostics and even physics program....
The results of studies high-intensity proton beam generation from thin (1–3 μm) solid targets irradiated by 0.35 ps laser pulse energy up to 15 J and intensity 2×1019 W/cm2 are reported. It is shown that the beams terawatt power around 1018 at source can be produced when laser-target interaction conditions approach skin-layer ponderomotive acceleration requirements. parameters remarkably depend on target structure significantly increased with use a double-layer Au/PS (plastic covered 0.1–0.2...
The properties of plasma (proton) block driven by the laser-induced skin-layer ponderomotive acceleration (S-LPA) mechanism are discussed. It is shown that proton density about a thousand times higher than beam produced target normal sheath (TNSA) mechanism. Such high-density can be considered as fast ignitor fusion targets. estimates show using S-LPA block, ignition threshold for precompressed DT fuel reached at ps laser energy ≤ 100 kJ.
Fast ignition (FI) is an innovative approach to inertial confinement fusion, which has the potential for higher energy gain at lower overall driver and cost. If realized full scale, it could open a route fusion energy. This paper brief review of basic FI concepts progress in research taken place recent years. The requirements DT fuel ignitor (electron or proton beam) as well laser drivers are discussed. Key issues related electron considered. Prospects FI-related experiments using next...
Generation of high speed dense plasma blocks is well known from hydrodynamic theory and computations (PIC) with experimental confirmation by Badziak et al. (2005) since ps laser pulses power above TW are available. These may be used for fusion flame generation (thermonuclear propagation) in uncompressed solid state deuterium tritium very gain uncomplicated operation stations. Hydrodynamic the end 1970s to recent, genuine two fluid support skin layer accelerations (SLA), nonlinear...
The possibilities of producing ultrahigh-current-density ps ion fluxes by the skin-layer interaction a short (≤ 1ps) laser pulse with plasma were studied using two-fluid hydrodynamic simulations, and time-of-flight measurements. Backward-emitted from massive (Au) target as well forward-emitted various thin foil targets irradiated 1-ps intensity up to 2 × 10 17 W/cm recorded. Both simulations measurements confirmed that short-pulse pre-plasma layer in front solid target, high-density...
Generation of fast ion beams by laser-induced skin-layer ponderomotive acceleration has been studied using a two-dimensional (2D) two-fluid relativistic computer code. It is shown that the key parameter determining spatial structure and angular divergence beam ratio dL∕Ln, where dL laser diameter Ln plasma density gradient scale length. When dL⪢Ln, dense highly collimated megaampere (proton) current approaching TA∕cm2 can be generated acceleration, even with tabletop subpicosecond laser.
A computer code named RayX has been developed for checking the performance of a spectroscopy system and optimizing individual parts, like detectors filters pulse height analysis (PHA) diagnostic designed stellarator W7-X. Using code, intensity shape X-ray spectra are simulated different plasma scenarios characterized by varying temperature density profiles as well electron cyclotron resonance heating (ECRH) power over wide range. In simulations recorded spectra, influence geometrical...
The results of particle-in-cell simulations are reported which demonstrate that a short-wavelength (λ≤0.5 μm) short-pulse laser driver can produce much more intense ion beams than the commonly used long-wavelength (λ∼1 ones. In particular, such allows for efficient generation ultrashort (≤100 fs), multi-MeV proton bunches extremely high intensities (>1021 W/cm2) and current densities (>1014 A/cm2) even at moderate values dimensionless amplitude a0≤10.
A pulse height analysis (PHA) system has been designed and manufactured for the Wendelstein 7-X stellarator, in such a way as to be already compatible with later quasi-continuous operation requirements. The diagnostic will provide X-ray spectra energy resolution better than 180 eV . three channels: 0.25–20 keV, 0.95–20 keV 1.5–20 For each channel separate Silicon Drift Detector (SDD) equipped suitably selected beryllium foil is used. range of 3 channels can further adapted particular...
It is shown by means of particle-in-cell simulations that a high-fluence (≥1 GJ/cm2) solid-density plasma projectile can be accelerated up to sub-relativistic velocities radiation pressure an ultraviolet (UV) picosecond laser pulse moderate values dimensionless amplitude a0∼10. The efficiency acceleration the UV significantly higher than in case long-wavelength (λ ∼ 1 μm) driver comparable value a0, and motion fairly well described “Light Sail” model.