A5105347250- Laser-induced spectroscopy and plasma
- Cultural Heritage Materials Analysis
- Laser-Ablation Synthesis of Nanoparticles
- Analytical chemistry methods development
- Laser Design and Applications
- Mercury impact and mitigation studies
- Laser-Matter Interactions and Applications
- Advanced Measurement and Detection Methods
- Laser-Plasma Interactions and Diagnostics
- Advanced X-ray Imaging Techniques
- Advancements in Materials Engineering
- Energetic Materials and Combustion
- Ion-surface interactions and analysis
- Combustion and Detonation Processes
- Graphene research and applications
- Optical Systems and Laser Technology
- Metal and Thin Film Mechanics
- Atomic and Molecular Physics
- Electromagnetic Launch and Propulsion Technology
- X-ray Spectroscopy and Fluorescence Analysis
- Solid State Laser Technologies
- Graphene and Nanomaterials Applications
- Copper Interconnects and Reliability
- Surface Treatment and Residual Stress
- Corrosion Behavior and Inhibition
Military University of Technology in Warsaw
2006-2020
Institute of Plasma Physics and Laser Microfusion
1988
We present a compact laboratory system for near edge soft X-ray fine structure (NEXAFS) spectroscopy that was developed using laser-plasma light source. The source is based on double stream gas puff target. plasma formed by the interaction of laser beam with target approach. optimized efficient emission from krypton/helium in range 1.5 to 5 nm wavelength. This used acquire simultaneously and absorption spectra investigated sample grazing incidence spectrometer. measurements transmission mode...
Metal artworks are subjected to corrosion and oxidation processes due reactive agents present in the air, water ground that these objects have been contact with for hundreds of years. This is case archaeological metals recovered from excavation sites, as well artefacts exposed polluted air. Stabilization conservation state needs precise diagnostics accrued surface layers identification original, historical materials before further protective treatments, including safe laser cleaning unwanted...
We present a proof of principle experiment on single-shot near edge soft X-ray fine structure (NEXAFS) spectroscopy with the use laboratory laser-plasma light source. The source is based plasma created as result interaction nanosecond laser pulse double stream gas puff target. was optimized for efficient (SXR) emission from krypton/helium target in wavelength range 2 nm to 5 nm. This used acquire simultaneously and absorption spectra investigated sample using grazing incidence grating...
A dual-channel laser system consisting of an Nd:YAG generator with Q - modulation and a "p – branch" type unstable resonator has been presented in the article. The assembly configured such way to constitute arms Mach-Zehnder interferometer. regulation amplification coefficient both amplifying channels allows for quick easy changes output energy each channel up value approximately 1.5 J, pulse duration 8-10 ns. configuration interference allowed angle between interfering beams. Full...
An influence of some physical phenomena disturbing correct interpretation LIBS spectra is described in the paper. The following were investigated: a way laser beam focusing (power density), spark air, spectral line broadening, apparatus efficiency and resolution, an those factors on as well. They are particularly important for quantitative measurements. presented measurement results clearly show that elemental identification plays significant role artworks dating [5].
The graphene paper microsieves can be applied in the filtration of biological fluids or separation solid particles from exploitation fluids. To produce for specific applications, good control over fabrication should achieved. In this study, a laser ablation method using picosecond was to fabricate microsieves. Holes were drilled pulsed radiation with pulse energy 5 100 µJ, duration 60 ps, wavelength 355 nm, and repetition rate 1 kHz. impact 10 pulses drill one hole. holes proper diameter...
In this paper, we present the first measurements of partial spatial coherence EUV emission from xenon plasma in laser-plasma source, based on a double stream gas puff target. The Young slit approach was employed to measure complex factor Xe at 13.5-nm wavelength two orthogonal directions. radius ~60 μm estimated distance 2.1 m source. number coherently emitted photons sufficient demonstrate coherent imaging. Using partially radiation such source Gabor holography successfully demonstrated.
The article presents application of microsieves made graphene paper for separation MDA-MB-231 breast cancer cells and SW-954 vulva cells. tests were carried out on a cell line grown under laboratory conditions. Holes in the sieves with laser ablation method. showed that analysed material is biocompatible aim both diagnosis circulating early identification disease conditions even at an stage its development.
This paper presents the results of annual measurements corrosion progress at test samples cast iron and carbon steel placed in different natural environments. Comparative tests were performed two outdoor stations, one Railway Museum central Warsaw location a small town Sochaczew, 50 km west Warsaw. The influence surface roughness on development was determined by kinds treatment all sample surfaces − metal brush or grinding. Stratigraphy composition products quarterly periods analyzed with...
Abstract In this paper, we present the application of partially spatially coherent extreme ultraviolet (EUV) radiation from xenon plasma a laser-plasma source, based on double stream gas puff target, in imaging. The at wavelength 13.5 ± 0.5 nm was employed to record Gabor-type holograms. An iterative algorithm, phase retrieval technique, developed and used remove twin image reconstructed EUV test objects. Using compact, source which is intrinsically incoherent, Gabor holography successfully...
Spectral investigations in the UV-VIS range of selected Al alloys and composites, used construction armament components as well drones, were performed using LIBS technique. Two Nd:YAG lasers applied: a short pulse 4 ns 60 mJ laser long 200/400 (up to 1000) us (~ 2/4 up 10 J) laser. In experiments with only atomic spectra observed while for pulses, also molecular transitions have been recorded. Electron temperatures created plasma found on base Boltzmann law. Temperatures are clearly higher...
Application of Laser Induced Breakdown Spectroscopy (LIBS) for investigation chemical constitution and stratigraphy artworks, metallic objects with multilayer structures is described in the paper. Physical phenomena accompanying LIBS investigations, especially temporal evolution spectral lines broadening are described. Operational characteristics experimental equipment shown. Results obtained use two different echelle spectrometers compared. Pigments used oil paintings analyzed analysis...
The possibilities of nanoparticles fabrication from the selected metals: copper, brass and 18Cr9Ni steel by laser ablation method were investigated. For extraction process most favorable pulse parameters such as: beam power, number pulses distance focus metal foil. SEM analysis confirmed presence nanospheres nanowires geometry particles.
Application of Laser Induced Breakdown Spectroscopy (LIBS) for investigation chemical constitution and stratigraphy artworks, museum objects metallic with multilayer structures is described in the paper. Physical phenomena accompanying LIBS investigations are briefly discussed. Operational characteristics experimental equipment presented. Experimental results measurements various like paintings, sculptures, minerals, shown. The State Committee Scientific Research decision No. 120/E-...
The paper describes work connected to the investigation of interaction strong laser radiation with selected metals, constituting typical materials applied in military technology, like aluminum, copper, brass and titanium. A special experimental stand was designed constructed achieve this objective. system consisted two Nd:YAG lasers working regime free generation (quasi-cw) another laser, generating short pre-pulses Qswitching regime. During concurrent operation both quasi-cw systems it...
Aula Leopoldina is the most representative, baroque hall in Wroclaw University. In 2008, LIBS measurements of paintings layers vault were done. spectra permitted identification mineral pigments used for specific colors painting layers. This could not be unambiguous each case since simultaneous occurrence elements that components different same color was observed some samples. For example, red samples presence aluminum and iron stated, hence ochre or Mars as a pigment. other cinnabar can...