A5037235315- Laser Design and Applications
- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Spectroscopy and Laser Applications
- Electrohydrodynamics and Fluid Dynamics
- nanoparticles nucleation surface interactions
- Chalcogenide Semiconductor Thin Films
- GaN-based semiconductor devices and materials
- Laser-Ablation Synthesis of Nanoparticles
- Quantum Dots Synthesis And Properties
- Atomic and Molecular Physics
- Gas Sensing Nanomaterials and Sensors
- Solid State Laser Technologies
- Pulsed Power Technology Applications
- Laser-induced spectroscopy and plasma
- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Electrochemical Analysis and Applications
- Chemical and Physical Studies
- Radioactive Decay and Measurement Techniques
- Catalytic Processes in Materials Science
- Atmospheric Ozone and Climate
- Copper-based nanomaterials and applications
- Gyrotron and Vacuum Electronics Research
- Vacuum and Plasma Arcs
Uzhhorod National University
2013-2023
Scientific Research Institute of Optoelectronic Instrumentation
2008-2010
University of Maryland, College Park
2009
State Optical Institute named after SI Vavilov
1998
Institute on Taxation and Economic Policy
1993
Parameters of the nanosecond overvoltage discharge plasma in an air gap (1÷5) × 10−3 m between electrodes, which contains vapor electrode material (Zn, Cu, Fe) injected into due to ectonic mechanism, have been studied. The dependences those parameters on ratio E/N electric field strength E and particle concentration N are calculated for “air–copper vapor” system, by using numerical simulation method.
The emission of coaxial HgI excimer lamps pumped by a repetitively pulsed barrier discharge is experimentally studied. stable operation the was demonstrated at pump-pulse repetition rates from 0.5 to 12 kHz, and average power attained 0.6 W 444 nm. It found that upon an addition 0.8% xenon mixture helium mercury diiodide, pulse powers increased 30%. reduced 5% after 2.5 × 106 pulses. An interpretation results optimising lamp characteristics given.
The conditions for the synthesis of zinc, copper and iron oxides nanostructures using plasma nanosecond high-current discharge in air when introducing electrodes material vapor into a due ectonic mechanism main parameters are investigated. It is shown that this can be used nanoparticles transition metal on dielectric substrate. Optical characteristics given.
An investigation was made of the process excitation HgCl2, HgBr2, and HgI2 molecules by electron impact producing B2∑+1/2 states HgCl*, HgBr*, HgI*. The maximum values cross sections for dissociative were found at low energies; these σ =(6 ± 3)×10−18, (7.5 3)×10−17, (1.2 0.6)×10−17 cm2 HgI*, respectively. role such in lasing analyzed.
Cosmic Ray Energetics And Mass (CREAM) is a balloon-borne experiment to directly measure the elemental spectra of protons iron nuclei with energies up ~ 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> eV. Energies these cosmic-ray particles are measured by an ionization calorimeter comprised 20 layers 1 radiation length thick tungsten plates and 0.5 mm diameter scintillating fibers. Each plate 500 times 3.5...
The characteristics of the nanosecond overvoltage discharge ignited between semiconductor electrodes based on CuInSe2 chalcopyrite compound in argon and nitrogen atmospheres at gas pressures 5.3–101 kPa are reported. Due to electrode sputtering, vapor enters plasma, so that some molecules become destroyed, whereas others partially deposited form thin films solid dielectric substrates located near plasma system. main products molecule decomposition determined; these atoms singly charged ions...
The results of the investigation optical characteristics a high-current nanosecond discharge in atmospheric pressure air between chalcopyrite electrodes (CuInSe2 and CuSbSe2 compounds) conditions overstressed gap are presented. When using with relatively large radius curvature working part (3 mm) special system for isolating surface electrodes, uniform was obtained millimeter intervals. Electrical (spectral temporal) were investigated. Based on solution Boltzmann equation electron energy...
The results of studying the conditions synthesis and luminescence aluminum oxide nanoparticles in a plasma an overstressed nanosecond discharge ignited between electrodes at interelectrode distance 2 mm air pressure range 50-202 kPa are presented. It was shown that investigated is characterized by wide band spectral 300–430 nm, which associated with formation F + centers. research can be used micro-nanotechnology, biomedical engineering to obtain nanostructured alumina substrates, on other...
The composition and partial pressures were determined for the components of gas mixtures which provide maximum emission yield simultaneously at two wavelengths 502 nm 444 in self-heating regime an excimer HgBr/HgI radiation source excited by a barrier discharge. conditions prolonged (no less than 4 × 106 pulses) stable operation high pulse repetition rates f = 0.5 - 10 kHz are determined. Pulsed average (for 5 kHz) output power densities 270 W cm-3 65 mW cm-3, respectively, pump-to-output...
Optical characteristics of a coaxial HgBr excilamp on multicomponent mercury dibromide vapour mixtures with helium, nitrogen and sulfur hexafluoride are investigated under pumping by pulse-periodic barrier discharge. Stable operation was demonstrated at pump pulse repetition rate . The component composition the working system determined, which provides maximal average pulsed specific radiation power , respectively, efficiency 7.3% in blue-green spectral range intensity wavelength reduction...
New results of research spectral and electrical characteristics the plasma high-frequency atmospheric -pressure dielectricbarrier discharge (DBD) at mixtures mercury diiodide vapor with xenon neon are presented.Gas-discharge creation excitation working mixture components was carried out by sinusoidal form voltage a repetition rate 125 kHz.Simultaneous emission mercuryand iodine (D' A') have been revealed.On basis comparing experimental data behavior spectra B-X C-X transitions molecule HgI...