A5069893577- Magnetic confinement fusion research
- Semiconductor Quantum Structures and Devices
- Advanced Semiconductor Detectors and Materials
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Chalcogenide Semiconductor Thin Films
- Optical Polarization and Ellipsometry
- Plasma Diagnostics and Applications
- Semiconductor materials and devices
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Dust and Plasma Wave Phenomena
- Seismic Imaging and Inversion Techniques
- Quantum and Classical Electrodynamics
- Electromagnetic Scattering and Analysis
- Advanced Materials Characterization Techniques
- Silicon Nanostructures and Photoluminescence
- Semiconductor materials and interfaces
- Laser-induced spectroscopy and plasma
- Geophysical and Geoelectrical Methods
- Machine Learning in Materials Science
- Particle accelerators and beam dynamics
- Geophysics and Gravity Measurements
- Nuclear reactor physics and engineering
- Magneto-Optical Properties and Applications
Maritime University of Szczecin
2012-2024
Royal Military Academy
2020
Culham Science Centre
2015
Technion – Israel Institute of Technology
2008
Gdynia Maritime University
2007
Institute of Mathematics
2002-2004
University of Wisconsin–Madison
1997-2000
Institute of Physics
1998-1999
California Maritime Academy
1996
Wrocław University of Science and Technology
1994
Abstract The JET 2019–2020 scientific and technological programme exploited the results of years concerted engineering work, including ITER-like wall (ILW: Be W divertor) installed in 2010, improved diagnostic capabilities now fully available, a major neutral beam injection upgrade providing record power 2019–2020, tested technical procedural preparation for safe operation with tritium. Research along three complementary axes yielded wealth new results. Firstly, plasma delivered scenarios...
The 2014–2016 JET results are reviewed in the light of their significance for optimising ITER research plan active and non-active operation. More than 60 h plasma operation with first wall materials successfully took place since its installation 2011. New multi-machine scaling type I-ELM divertor energy flux density to is supported by principle modelling. relevant disruption experiments modelling reported a set three mitigation valves mimicking setup. Insights L–H power threshold Deuterium...
The next step in the Wendelstein stellarator line is large superconducting device 7-X, currently under construction Greifswald, Germany. Steady-state operation an intrinsic feature of stellarators, and one key element 7-X mission to demonstrate steady-state plasma conditions relevant for a fusion power plant. device, on hand, requires implementation special technologies, giving rise technical challenges during design, fabrication assembly such device. On other also physics development at...
In this paper, we present the work in implementation of a new calibration for JET real-time polarimeter based on complex amplitude ratio technique and self-validation mechanism data. This allowed easy integration polarimetry measurements into plasma density control (gas feedback control) as well machine protection systems (neutral beam injection heating safety interlocks). The addition was used successfully during 2014 Campaign is envisaged that will operate routinely from 2015 campaign...
The equation for evolution of the four-component Stokes vector in weakly anisotropic and smoothly inhomogeneous media is derived on basis a quasi-isotropic approximation geometrical optics method, which provides consequent asymptotic solution Maxwell's equations. Our generalizes previous results obtained normal propagation electromagnetic waves stratified media. It valid curvilinear rays with torsion capable describing mode conversion Remarkably, described by Bargmann-Michel-Telegdi...
The photoluminescence properties of GaAs:Er doped with a new pyrazole and pyridine-based Er source, tris(3,5-di-tert-butylpyrazolato)bis(4-tert-butylpyridine)erbium(III), were investigated. These samples showed significantly stronger sharper 1.54 μm Er3+ luminescence than in cyclopentadienyl-based sources. efficient was associated the Er–2O center, formed unintentional oxygen impurities. emission greatly reduced n-type samples, whereas remained strong p-type samples. This trend suggests that...
We have investigated the use of an alternative erbium precursor, tris(3,5-di-tert-butyl- pyrazolato)bis(4-tert-butylpyridine)erbium, to dope into GaAs. The incorporated forms optically active center identified as Er–2O. GaAs:Er formed using this precursor exhibits sharper and more intense optical emission, attributed Er–2O center, than that previously found with cylcopentadienyl-based sources. Codoping shallow donors results in a quenching erbium-related luminescence, while codoping...
The aim of this study was to examine the role structural factors antitumour anthraquinone derivatives and analogues in ability undergo bioreductive activation by NADPH cytochrome P450 reductase (CPR) determine impact on increasing activity especially with regard multidrug resistant (MDR) tumour cells. It found that at a high concentration (500 μmol/l), anthracenedione agent ametantrone, an unmodified quinone structure, susceptible CPR-dependent reductive activation. In contrast, it shown...
Abstract The equation for evolution of the complex amplitudes ratio (CAR) ζ = E y / x in weakly anisotropic inhomogeneous media is derived on basis quasi-isotropic approximation (QIA) geometrical optics method. This convenient description electromagnetic wave polarization magnetized plasma thermonuclear reactors like ITER. CAR agreement with other approaches, analyzing media, particular, angle and, via QIA equations, Segre Stokes vector evolution. Simple analytical solutions CAR, which...
The method of localized polarimetric measurements based on the phenomenon modes conversion near orthogonality point between electromagnetic beam and one helical magnetic lines in a tokamak plasma is discussed. A simple model toroidal magnetized suggested, which allows to analyze applicability polarimetry for ITER project. It shown that an acceptable localization about 0.3?m can be achieved very high densities order Ne = 1017?cm?3, are significantly higher than densities, 1014?1015?cm?3, envisaged
Abstract The main methods describing polarization of electromagnetic waves in weakly anisotropic inhomogeneous media are reviewed: the quasi-isotropic approximation (QIA) geometrical optics method that deals with coupled equations for field components, and Stokes vector formalism (SVF), dealing which quadratic intensity. equation evolution is shown to be derived directly from QIA, whereas inverse cannot true. Derivation SVF QIA establishes a deep unity these two approaches, happen equivalent...
This paper develops a global model based on non-local properties of fractional derivatives for fusion plasmas. The results confirm that transport in the largest device i.e. JET, is better predicted. expected to provide an insight proper kinetic description plasmas, and improve accuracy predictions.
Abstract The paper reviews and discusses the main factors, limiting accuracy of polarimetric measurements in tokamak plasma. Theoretical methods, describing evolution polarimetry state plasma, are demonstrated not to contribute noticeably inaccuracy at sufficiently short beam wavelengths. Based on literature data as well our preliminary estimates it is possible conclude that following factors dominate: i) calibration procedure; ii) refraction inhomogeneous plasma; iii) influence weak...