Procházení Acta Polytechnica. 2013, vol. 53, no. 2 dle data publikování
Zobrazují se záznamy 21-39 z 39
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High-Speed Monitoring of Dust Particles in ITER ELMs Simulation Experiments with QSPA Kh-50
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Dust generation under powerful plasma stream impacts has been studied in ITER ELM simulation experiments with QSPA Kh-50 plasma accelerator. Repetitive plasma exposures of tungsten have been performed by 0.25 ms plasma ... -
Estimation of Amount of Scattered Neutrons at Devices PFZ and GIT-12 by MCNP Simulations
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Our work is dedicated to pinch effect occurring during current discharge in deuterium plasma, and our results are connected with two devices – plasma focus PFZ, situated in the Faculty of Electrical Engineering, CTU, Prague, ... -
Long-Lived Plasma Process, Created by Impulse Discharge in Micro-Disperse Droplet Environment
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The processes of organic compound (phenol and cation-active surfactants) destruction in water solutions, which stay under the influence of plasma treatment have been investigated in different dynamic plasma-liquid systems ... -
The Influence of Nitrogen in Ar+N2 Mixture on Parameters of High-Temperature Device with Electric Arc
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The paper presents the results of numerous experiments carried out on a high temperature device consisting of an arc heater with intensively blasted electric arc and reaction chambers connected to its output. The influence ... -
Atmospheric Argon Free burning Arcs with a Simplified Unified Model Using CFD-Arc Modeling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Free burning arcs, where the work piece acts as an anode, are frequently used for a number of applications. Our investigation is exclusively concerned with a simplified unified model of arcs and their electrodes under ... -
Calculation of the Inductance of Plasma Column at PF-1000 Device with Assumed Current Distribution
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Processed data is taken from the D-D fusion reaction experiments on PF-1000 at IFPILM Warsaw, operating with 2 MA, 1011 neutron yield, using interferometry, temporal resolved neutron diagnostics, magnetic probe diagnostics ... -
Velikhov Electrothermal Instability Cancellation by a Modification of Electrical Conductivity Value in a Streamer by Magnetic Confinement
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We present a method, confirmed experimentally, allowing the cancellation of Velikhov instability by operating a local magnetic field reduction along a lane, which enhances local electric conductivity and electron-gas ... -
Materials for Fusion Applications
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)An overview of materials foreseen for use or already used in fusion devices is given. The operating conditions, material requirements and characteristics of candidate materials in several specific application segments are ... -
Clock Math — a System for Solving SLEs Exactly
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)In this paper, we present a GPU-accelerated hybrid system that solves ill-conditioned systems of linear equations exactly. Exactly means without rounding errors due to using integer arithmetics. First, we scale floating-point ... -
Plasma–Surface Interactions Under High Heat and Particle Fluxes
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The plasma-surface interactions expected in the divertor of a future fusion reactor are characterized by extreme heat and particle fluxes interacting with the plasma-facing surfaces. Powerful linear plasma generators are ... -
Development of the PETAL Laser Facility and its Diagnostic Tools
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The PETAL system (PETawatt Aquitaine Laser) is a high-energy short-pulse laser, currently in an advanced construction phase, to be combined with the French Mega-Joule Laser (LMJ). In a first operational phase (beginning ... -
The Formation of a Power Multi-Pulse Extreme Ultraviolet Radiation in the Pulse Plasma Diode of Low Pressure
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)In this paper results are presented on experimental studies of the temporal characteristics of spike extreme ultraviolet (EUV) radiation in the spectral range of 12.2 ÷ 15.8 nm from the anode region of high-current (I = ... -
Growth and Physical Structure of Amorphous Boron Carbide Deposited by Magnetron Sputtering on a Silicon Substrate with a Titanium Interlayer
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Multilayer amorphous boron carbide coatings were produced by radiofrequency magnetron sputtering on silicon substrates. To improve the adhesion, titanium interlayers with different thickness were interposed between the ... -
The Process of Plasma Chemical Photoresist Film Ashing from the Surface of Silicon Wafers
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)At present, the research for finding new technical methods of treating materials with plasma, including the development of energy and resource saving technologies for microelectronic manufacturing, is particularly actual.In ... -
Diffuse Coplanar Surface Barrier Discharge in Nitrogen: Microdischarges Statistical Behavior
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)We studied statistical behavior of microdischarges of diffuse coplanar surface barrier discharge (DCSBD) operated in nitrogen atmosphere at two input voltage regimes. We measured spectrally unresolved discharge patterns ... -
Multigroup Approximation of Radiation Transfer in SF6 Arc Plasmas
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The first order of the method of spherical harmonics (P1-approximation) has been used to evaluate the radiation properties of arc plasmas of various mixtures of SF6 and PTFE ((C2F4)n, polytetrafluoroethylene) in the ... -
Computer Simulation of a Plasma Vibrator Antenna
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)The use of new plasma technologies in antenna technology is widely discussed nowadays. The plasma antenna must receive and transmit signals in the frequency range of a transceiver. Many experiments have been carried out ... -
Physical and Electrical Properties of Yttria-Stabilized Zirconia Thin Films Prepared by Radio Frequency Magnetron Sputtering
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)This paper presents the electrophysical characteristics of a 7 mol.% yttria-stabilized zirconia (YSZ) thin film deposited by radio-frequency magnetron sputtering. In order to form the crystallinestructure, the deposited ... -
Emittance Characterization of Ion Beams Provided by Laser Plasma
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Laser ion sources offer the possibility to obtain ion beams useful for particle accelerators. Nanosecond pulsed lasers at intensities of the order of 108 W/cm2, interacting with solid matter in a vacuum, produce plasma of ...