A5090088069- Photorefractive and Nonlinear Optics
- Photonic and Optical Devices
- Fusion materials and technologies
- Mechanical and Optical Resonators
- GaN-based semiconductor devices and materials
- Gamma-ray bursts and supernovae
- Nuclear Materials and Properties
- Ga2O3 and related materials
- Metal and Thin Film Mechanics
- Optical and Acousto-Optic Technologies
- Advanced Fiber Laser Technologies
- Advanced materials and composites
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Semiconductor Quantum Structures and Devices
- Astro and Planetary Science
- Acoustic Wave Resonator Technologies
- Economic and Technological Systems Analysis
- Silicon Nanostructures and Photoluminescence
- Thermography and Photoacoustic Techniques
- Industrial Engineering and Technologies
- Photonic Crystals and Applications
- Nuclear Physics and Applications
- Transition Metal Oxide Nanomaterials
- ZnO doping and properties
National Nuclear Center of the Republic of Kazakhstan
2013-2024
Shakarim State University Of Semey
2022-2024
Institute of Atomic Energy
2018-2024
Ioffe Institute
2009-2023
Russian Academy of Sciences
2005-2023
Institute of Informatics Problems
2020-2022
Ural Federal University
2019-2022
Moscow Witte University
2021
Moscow State University
2017-2018
Lomonosov Moscow State University
2017-2018
This paper gives a thorough treatment of new effect non-steady-state photo-electromotive-force (emf). The consists an alternating electric current arising in short-circuited bulk sample photoconductor illuminated by vibrating sinusoidal pattern. As detailed theoretical analysis shows, the frequency transfer function is identical with that differentiating RC circuit having time constant equal to characteristic space-charge grating formation within volume τsc. For high excitation frequencies...
The paper presents the development of a triple probe consisting three tungsten electrodes with diameter 1 mm, intended for applications on plasma beam installation (PBI). appropriate measuring equipment and electrical wiring diagram have been selected. has successfully passed commissioning tests, during which key factors were identified that are important accurate interpretation results integration into diagnostic system PBI. Experimental measurements parameters using showed comparable...
Abstract This work is devoted to the investigation of tungsten surface after exposure Ar + , and He . Plasma irradiation experiments were conducted in a plasma-beam installation. The analysis modification was carried out by scanning electron microscopy contact profilometry. As result studies conducted, it found that on argon plasma shows «relief etching». It assumed formation relief occurs mainly due dispersion high ion energy cascade mechanism. After He, areas with wavy structure observed...
The effect of the non-steady-state photoelectromotive force (PEMF) in photoconductive crystals is considered for excitation frequencies equal to or higher than inverse photocarrier lifetime. theoretical analysis, based on a widely used model an impurity photoconductor with one partially compensated donor level, performed case external dc electric field applied sample. average lifetimes photoelectrons and their mobilities are estimated from experiments PEMF cubic BSO BTO crystals.
Presently, scientists are vigorously exploring effective, sustainable and environmentally friendly energy sources, which has lent momentum to the adoption of solid oxide fuel cells (SOFCs).The present research focuses on synthesis investigation a binary composed lanthanum copper, was characterized using FTIR, XRD, SEM, XPS BET.The findings revealed that surface morphology exhibited mesoporosity, due interconnection sintering pliable, rod-like crystalline structure, determined be...
This paper presents the research results of hydrogen plasma effect on surface structure TGP-56 beryllium. In linear simulator, operating conditions first wall ITER are simulated. Beryllium was irradiated with at temperatures ~360 °C, ~800 and ~1200 depending its location in chamber; a different number pulses duration each pulse 500 s. Samples beryllium were subjected to set material studies. Experimental data obtained change edges samples after effect. It found that normal (2 MW/m2)...
<abstract> <p>Tungsten was chosen as the plasma facing material (PFM) of ITER divertor. However, graphite and carbon-graphite materials are used PFM in some research thermonuclear facilities, including Kazakhstan science tokamak. This circumstance determines interest continuing study formation mixed layers under irradiation. article is devoted to effect preliminary recrystallization annealing on carbidization tungsten surface a beam-plasma discharge (BPD), which one ways simulate...
The effect of non-steady-state photovoltage in photoconductive crystals for high excitation frequencies is discussed. theoretical analysis based on the widely accepted model a photoconductor with one partially compensated donor level and finite photoelectron lifetime reasonable agreement expirements cubic BSO crystals. Average lifetimes photocarners samples were estimated to be τ = 10−4 s λ 442nm 3 × 10−6s 663 nm.
The set of experiments using a glow discharge direct current in the mixture working gases (nitrogen-hydrogen) was carried out order to choose optimal method tungsten nitriding. In result it chosen nitriding mode which leads formation nitrides on surface irradiated sample. Analysis methods SEM, EDS, X-ray diffraction were used determine parameters such as structure, microhardness, phase and element composition surface, also depth nitrogen penetration into tungsten. nitriding, can be for...
We report the excitation of non-steady-state photoelectro-motive force in a monoclinic gallium oxide crystal. The crystal grown an oxygen atmosphere is insulating and highly transparent for visible light, nevertheless, formation dynamic space-charge gratings observation photo-EMF signal achieved under laser illumination with wavelength λ = 532 nm. induced ac current studied cases zero non-zero external electric fields, which imply non-resonant resonant mechanisms recording. dependencies...
This paper presents the results of a study on impact high-power heat load and tungsten (W) surface carbidization its structural-phase composition physical-mechanical properties. In this regard, W was carried out by means beam-plasma discharge in simulation machine with plasma-beam installation. Certain data were obtained regarding temperature control points studied samples distribution throughout monoblock element, made as rectangle an orifice for cooling path, placed fusion reactor...
Abstract The paper considers a method of tungsten surface carbidization using beam-plasma discharge (BPD), which was implemented in plasma-beam installation (PBI). advantage this is to create conditions for chemical reactions and physical processes as close possible those thermonuclear installations. BPD makes it generate plasma different working gases. Methane used plasma-forming gas. gas pressure chamber (1,3–1,4)·10 –1 Pa. temperature dependence the carbidized layer formation on under...