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Artykuły w czasopismach na temat „Non-Equilibrium Gas Plasma”

Autor: Grafiati
Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

Petrovic, Zoran, N. Puac, G. Malovic, et al. "Application of non-equilibrium plasmas in medicine." Journal of the Serbian Chemical Society 77, no. 12 (2012): 1689–99. http://dx.doi.org/10.2298/jsc121020142p.

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We review the potential of plasma medical applications, the connections to nanotechnologies and the results obtained by our group. A special issue in plasma medicine is the development of the plasma sources that would achieve non-equilibrium at atmospheric pressure in atmospheric gas mixture with no or only marginal heating of the gas, and with desired properties and mechanisms that may be controlled. Our studies have shown that control of radicals or chemically active products of the discharge such as ROS (reactive oxygen species) and/or NO may be used to control the growth of the seeds. At t
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2

Hegemann, Dirk, Paula Navascués, and Ramses Snoeckx. "Plasma gas conversion in non-equilibrium conditions." International Journal of Hydrogen Energy 100 (January 2025): 548–55. https://doi.org/10.1016/j.ijhydene.2024.12.351.

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3

Zavershinskij, Igor, Efim Kogan, and Nonna Molevich. "The formation of dissipative structures in the acoustic field." Izvestiya VUZ. Applied Nonlinear Dynamics 1, no. 3 (1993): 87–96. https://doi.org/10.18500/0869-6632-1993-1-3-87-96.

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A theory describing the formation of plasma—acoustic structures in a non-equilibrium plasma has been built. The community of the evolutionary equations in геlaxing gas media and in plasma has been shown. The investigation of non-linear dynamics of non-equilibrium gas and plasma media is made on the ground of these basic equations.
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4

Marciniak, A. "Equilibrium and Non-Equilibrium Models of Layer Formation During Plasma and Gas Nitriding." Surface Engineering 1, no. 4 (1985): 283–88. http://dx.doi.org/10.1179/sur.1985.1.4.283.

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5

Khaydarov, Zokirjon, Khurshid Yuldashev, Bunyodbek Khaydarov, Shuxrat Sultanov, Qaxramon Ergashov, and Mirzaolim Axmadjonov. "Non-equilibrium processes in a gas-discharge cell with plasma contacts." E3S Web of Conferences 587 (2024): 01006. http://dx.doi.org/10.1051/e3sconf/202458701006.

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Non-equilibrium processes in a gas discharge cell with semiconductor electrodes made of semi-insulating gallium arsenide and sulfur-doped silicon have been studied experimentally. It is shown that plasma contacts to semiconductor electrodes have a positive effect on the stability of gas discharge luminescence under selected conditions. Chromium-compensated gallium arsenide with two plasma contacts stabilizes the image converter operation in a wide range of operating temperatures and wavelengths. It is experimentally confirmed that based on a gas discharge cell with an additional damping cell,
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6

Kadnikov, D. V., A. A. Ovtsyn, S. A. Shibaev, and S. A. Smirnov. "Feedbacks in Non-equilibrium Oxidative Plasma Reacting with Polyethylene." PLASMA PHYSICS AND TECHNOLOGY 4, no. 1 (2017): 104–7. http://dx.doi.org/10.14311/ppt.2017.1.104.

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The experimental results on studies of loading effect at the action of a glow DC discharge in oxygen and air on polyethylene film are presented. At the increase in a polymer amount under a treatment the specific rates of etching and CO<sub>2</sub>, CO, H<sub>2</sub>O, H<sub>2</sub> product formation rates are decreased. The gas temperature is changed slightly. The reduced electric field strength is increased in oxygen plasma and decreased in air plasma.
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7

Kaśkova, S. I., G. S. Romanov, and K. L. Stepanov. "Line radiation transfer in non-equilibrium laser plasma." Laser and Particle Beams 6, no. 4 (1988): 703–8. http://dx.doi.org/10.1017/s0263034600005644.

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The self-radiation characteristics of plasma created under the effect of a powerful laser radiation on a target are considered. The radiation in the spectral range from 1 to 1300 Å is calculated in coherent assumption for given gas-dynamic fields corresponding to various phases of laser target explosion. The source function was determined in accordance with a plasma radiation-collision model with the assumption of its transparency. Calculations show that the contribution of line radiation to the total flux may be from 20 to 60%. Mainly, this paper considers radiation transfer. The effect of se
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8

Golda, Judith, Henrik van Impel, Robin Labenski, et al. "(Invited) Enhancing Catalysis with Atmospheric Pressure Plasmas: Unraveling Fundamental Processes and Applications." ECS Meeting Abstracts MA2025-01, no. 22 (2025): 1376. https://doi.org/10.1149/ma2025-01221376mtgabs.

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The integration of low-temperature plasmas with catalysis has recently gained attention as a method to store renewable energy in chemical forms, potentially facilitating the electrification of industry in response to the climate crisis. Although the combination of traditional catalysts with non-equilibrium plasmas has demonstrated promising synergies, much of the research remains empirical. Studies indicate that atmospheric pressure plasmas, with their distinctive non-equilibrium properties and surface interactions, can enhance classical catalysis. However, understanding the underlying mechani
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9

Shinichi, Tashiro, Toru Iwao, Tuginori Inaba, and Manabu Tanaka. "Development of Non-Equilibrium Simulation Model of Gas Tungsten Arc." Materials Science Forum 580-582 (June 2008): 659–62. http://dx.doi.org/10.4028/www.scientific.net/msf.580-582.659.

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We have developed non-equilibrium simulation model of GTA. In this paper, simulation results of plasma property of argon GTA at atmospheric pressure are presented and, furthermore, the reliability of the simulation model is evaluated. As a result, it was revealed that non-equilibrium characteristic appears in regions close to both electrodes and the fringe of the arc column where the temperatures decrease below approximately 10000K. It was also found that non-equilibrium region near the anode surface has thickness of 0.3mm. This result agrees with the simulation result predicted with one-dimen
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10

ZHANG Chongrui, HE Wenliang, CAO Shiquan, Xie Luyou, and Dong Chenzhong. "Theoretical Study on Charge-State Evolution of Carbon Ions Penetrating Hydrogen Plasma." Acta Physica Sinica 74, no. 18 (2025): 0. https://doi.org/10.7498/aps.74.20250668.

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This paper systematically investigates the charge state evolution behavior of carbon ions interacting with hydrogen plasma based on a cross-sectional model. First, the study explores the influence of introducing a "shifted" Maxwellian velocity distribution on the dielectronic recombination rate coefficients within the range of carbon ion incident energies from 1 keV/u to 100 MeV/u and hydrogen plasma electron temperatures of <i>kT<sub>e</sub></i>=1-1000eV. For the first time, rate coefficient data for this system are provided. Building on this, the research specifically
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11

Starikovskiy, Andrey. "Physics and chemistry of plasma-assisted combustion." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2048 (2015): 20150074. http://dx.doi.org/10.1098/rsta.2015.0074.

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There are several mechanisms that affect a gas when using discharge plasma to initiate combustion or to stabilize a flame. There are two thermal mechanisms—the homogeneous and inhomogeneous heating of the gas due to ‘hot’ atom thermalization and vibrational and electronic energy relaxation. The homogeneous heating causes the acceleration of the chemical reactions. The inhomogeneous heating generates flow perturbations, which promote increased turbulence and mixing. Non-thermal mechanisms include the ionic wind effect (the momentum transfer from an electric field to the gas due to the space cha
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12

Dickenson, Aaron, Nikolay Britun, Anton Nikiforov, Christophe Leys, Mohammad I. Hasan, and James L. Walsh. "The generation and transport of reactive nitrogen species from a low temperature atmospheric pressure air plasma source." Physical Chemistry Chemical Physics 20, no. 45 (2018): 28499–510. http://dx.doi.org/10.1039/c8cp05762a.

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13

Lisanevich, Maria S., Reseda Yu Galimzyanova, and Rustem G. Ibragimov. "Influence of non-equilibrium low-temperature plasma on consumer characteristics of spunmelt material." Butlerov Communications 64, no. 11 (2020): 143–48. http://dx.doi.org/10.37952/roi-jbc-01/20-64-11-143.

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Nonwovens (nonwovens) are widely used in medicine, for the manufacture of medical linen, sanitary and hygienic items, medical clothing, surgical materials (including dressings). The rapid development of the clothing market requires domestic manufacturers to be competitive not only through new products and technologies, but also new sensations for the consumer, provided that the price is competitive. According to medical workers, disposable surgical gowns based on spunmelt materials give a feeling of discomfort during use. One and relatively new method for modifying nanomaterials is treatment w
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14

Bogatskaya, Anna V., Nelli E. Gnezdovskaia, and Alexander M. Popov. "Tunable THz Pulses Generation in Non-Equilibrium Magnetized Plasma: The Role of Plasma Kinetics." Photonics 7, no. 4 (2020): 82. http://dx.doi.org/10.3390/photonics7040082.

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In this paper the theoretical model to consider the influence of kinetic properties of nonequilibrium two-color plasma during the THz pulses generation in the presence of static magnetic field is developed. It is shown that applying a static magnetic field on a gas along the direction of propagation of an ionizing two-color laser pulse allows one to produce two-frequency emissions in THz range with tunable central frequency and bandwidth, which are strongly dependent on electron velocity distribution function (EVDF) formed in the plasma as well as relations between collisional, plasma and cycl
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15

Starikovskiy, Andrey, Nickolay Aleksandrov, and Aleksandr Rakitin. "Plasma-assisted ignition and deflagration-to-detonation transition." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1960 (2012): 740–73. http://dx.doi.org/10.1098/rsta.2011.0344.

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Non-equilibrium plasma demonstrates great potential to control ultra-lean, ultra-fast, low-temperature flames and to become an extremely promising technology for a wide range of applications, including aviation gas turbine engines, piston engines, RAMjets, SCRAMjets and detonation initiation for pulsed detonation engines. The analysis of discharge processes shows that the discharge energy can be deposited into the desired internal degrees of freedom of molecules when varying the reduced electric field, E / n , at which the discharge is maintained. The amount of deposited energy is controlled b
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16

KAWANO, HIROAKI, TOSHIHIRO TAKAMATSU, YURIKO MATSUMURA, HIDEKAZU MIYAHARA, ATSUO IWASAWA, and AKITOSHI OKINO. "Influence of Gas Temperature in Atmospheric Non-Equilibrium Plasma on Bactericidal Effect." Biocontrol Science 23, no. 4 (2018): 167–75. http://dx.doi.org/10.4265/bio.23.167.

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17

Tashiro, S., T. Iwao, T. Inaba, and M. Tanaka. "Non-equilibrium plasma modeling of Gas Tungsten Arc in middle current range." Transactions of the Materials Research Society of Japan 33, no. 3 (2008): 695–98. http://dx.doi.org/10.14723/tmrsj.33.695.

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18

Yuri S. Akishev, Yuri S. "NON-THERMAL PLASMA AT ATMOSPHERIC PRESSURE AND ITS OPPORTUNITIES FOR APPLICATIONS." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 62, no. 8 (2019): 26–60. http://dx.doi.org/10.6060/ivkkt.20196208.5908.

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The subject of this review is the low-temperature (or "cold") weakly-ionized but strongly non-equilibrium plasma created at atmospheric pressure in gaseous mixtures or directly in atmospheric air. Cold plasma is rather new, but very perspective object. The strong non-equilibrium of the weakly-ionized plasma leads to that energetic electrons despite their small quantity very effectively excite and dissociate the neutral particles which are contained in surrounding gas, for example, of a molecule of oxygen and water. The pointed above property of cold plasma is valuable from the practical point
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19

Bachmann, P. K., G. Gärtner, and H. Lydtin. "Plasma-Assisted Chemical Vapor Deposition Processes." MRS Bulletin 13, no. 12 (1988): 52–59. http://dx.doi.org/10.1557/s0883769400063703.

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Over the past two decades a vast number of publications have emerged from laboratories all over the world, describing the application of plasmas for preparing and processing materials. MRS symposia, scientific journals and books, and complete conference series are solely devoted to this specific topic.Modern VLSI integrated circuits, for instance, would simply not exist without sophisticated plasma etching techniques. But highly reactive, partly ionized and dissociated, quasi-neutral gases—plasmas—are not only useful for etching purposes, i.e., the removal of materials. They are also very valu
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20

van Rooij, G. J., D. C. M. van den Bekerom, N. den Harder, et al. "Taming microwave plasma to beat thermodynamics in CO2 dissociation." Faraday Discussions 183 (2015): 233–48. http://dx.doi.org/10.1039/c5fd00045a.

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The strong non-equilibrium conditions provided by the plasma phase offer the opportunity to beat traditional thermal process energy efficiencies via preferential excitation of molecular vibrations. Simple molecular physics considerations are presented to explain potential dissociation pathways in plasma and their effect on energy efficiency. A common microwave reactor approach is evaluated experimentally with Rayleigh scattering and Fourier transform infrared spectroscopy to assess gas temperatures (exceeding 10<sup>4</sup> K) and conversion degrees (up to 30%), respectively. The results are i
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21

Li, Limin, Chao Liu, Xuming Zhang, et al. "Plasma-target surface interaction during non-equilibrium plasma irradiation at atmospheric pressure: Generation of dusty plasma." Laser and Particle Beams 32, no. 1 (2013): 69–78. http://dx.doi.org/10.1017/s0263034613000888.

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AbstractThe remaining challenges, developing the relativistic electron beam sources, stimulate the investigations of cathode materials. Carbon-fiber-aluminum composite is the most appropriate cathode materials to construct the robust relativistic electron beam sources. Carbon-fiber-aluminum composite is treated by a non-equilibrium atmospheric plasma torch with a copper electrode based on high-voltage gas discharge. The axial and radial distributions of the plasma torch temperature are measured to determine the optimal treatment temperature and location. Copper-oxide particles with diameters o
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22

Okovity, V. A., F. I. Panteleenko, V. M. Astashinsky, and V. V. Okovity. "TECHNOLOGICAL SPECIFIC FEATURES ON FORMATION OF PLASMA POWDER COATINGS FROM CERAMICS WITH NON-EQUILIBRIUM STRUCTURE." Science & Technique 17, no. 3 (2018): 183–89. http://dx.doi.org/10.21122/2227-1031-2018-17-3-183-189.

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The paper presents investigations on studying the influence of plasma jet parameters (current, sputtering distance, consumption of nitrogen plasma forming gas), fractional composition of an initial powder on characteristics of plasma powder coatings from ceramics with a non-equilibrium structure. Optimization of APS parameters (plasma spraying in air) has been carried out for the following materials: NiAl, Al2O3–Cr2O–TiO2– 15 % (CaF2–Ni) and FeCr30Mo3 – 12 % CaF2– 50 % TiC. The optimization of sputtering parameters has been made on the basis of obtaining maximum coefficient of the material use
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23

Li, Zhenyang, Yifei Zhu, Di Pan, and Xinyao Cheng. "Characterization of a Gliding Arc Igniter from an Equilibrium Stage to a Non–Equilibrium Stage Using a Coupled 3D–0D Approach." Processes 11, no. 3 (2023): 873. http://dx.doi.org/10.3390/pr11030873.

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A gliding arc plasma source designed for high efficient ignition has been studied with the help of numerical simulation and experiments. A coupled 3D–0D approach has been proposed to model the gliding arc from ignition (the equilibrium stage) to extinguish (the non–equilibrium stage). The model takes the measured discharge morphology, voltage, current, and velocity as inputs, and has been validated by comparing the calculated temperature with experimental results from an independent group. The temporal evolution of the temperature as well as active species, and the effective penetration length
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24

Abourabia, A. M., and T. Z. Abdel Wahid. "The unsteady Boltzmann kinetic equation and non-equilibrium thermodynamics of an electron gas for the Rayleigh flow problem." Canadian Journal of Physics 88, no. 7 (2010): 501–11. http://dx.doi.org/10.1139/p10-032.

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In the framework of irreversible thermodynamics, the characteristics of the Rayleigh flow problem of a rarified electron gas extracted from neutral atoms is examined and proved to obey the entropic behavior for gas systems. A model kinetic equation of the BGK (Bhatnager–Gross–Krook) type is solved, using the method of moments with a two-sided distribution function. Various macroscopic properties of the electron gas, such as the mean velocity, the shear stress, and the viscosity coefficient, together with the induced electric and magnetic fields, are investigated with respect to both distance a
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25

Nowakowska-Langier, Katarzyna, Rafal Chodun, and Krzysztof Zdunek. "Synthesis of multicomponent metallic layers during impulse plasma deposition." Materials Science-Poland 33, no. 4 (2015): 841–46. http://dx.doi.org/10.1515/msp-2015-0077.

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AbstractPulsed plasma in the impulse plasma deposition (IPD) synthesis is generated in a coaxial accelerator by strong periodic electrical pulses, and it is distributed in a form of energetic plasma packets. A nearly complete ionization of gas, in these conditions of plasma generation, favors the nucleation of new phase of ions and synthesis of metastable materials in a form of coatings which are characterized by amorphous and/or nanocrystalline structure. In this work, the Fe–Cu alloy, which is immiscible in the state of equilibrium, was selected as a model system to study the possibility of
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26

Potapkin, B. V., M. A. Deminsky, A. A. Fridman, and V. D. Rusanov. "The effect of clusters and heterogeneous reactions on non-equilibrium plasma flue gas cleaning." Radiation Physics and Chemistry 45, no. 6 (1995): 1081–88. http://dx.doi.org/10.1016/0969-806x(94)00168-j.

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27

Baeva, Margarita, Tao Zhu, Thorben Kewitz, Holger Testrich, and Rüdiger Foest. "Self-Consistent Cathode–Plasma Coupling and Role of the Fluid Flow Approach in Torch Modeling." Journal of Thermal Spray Technology 30, no. 7 (2021): 1737–50. http://dx.doi.org/10.1007/s11666-021-01261-4.

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AbstractA two-dimensional and stationary magnetohydrodynamic model of a plasma spray torch operated with argon is developed to predict the plasma properties in a steady operating mode. The model couples a submodel of a refractory cathode and its non-equilibrium boundary layer to a submodel of the plasma in local thermodynamic equilibrium in a self-consistent manner. The Navier–Stokes equations for a laminar and compressible flow are solved in terms of low and high Mach number numerical approaches. The results show that the Mach number can reach values close to one. Simulations are performed fo
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28

Fajar, Muhamad Ibnu, Elfahra Casanza Amalda, Muhammad Ali Akram Syah, and Nurussa’adah. "Design of a Switching Flyback Transformer as High Voltage and Frequency Power Supply for Raw Milk Cold Plasma Sterilization." International Journal of Science, Technology & Management 1, no. 3 (2020): 230–36. http://dx.doi.org/10.46729/ijstm.v1i3.50.

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Plasma is one of the four fundamentals states of matter other than solid, liquid and gas. In terms of temperature, plasma can be classified into Hot Plasma occurs in thermal equilibrium, Thermal Plasma occurs in non-thermal equilibrium, Cold Plasma occurs in non-thermal equilibrium Cold plasma is an ultra-fast method of sterilization that operates under ambient temperatures (ideal for thermolabile products) at a low running cost and is environment-friendly. Therefore, technology is needed to solve the problem through the innovation of a milk sterilization machine with the principle of non-ther
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29

Ibrahimoglu, Beycan, and Beycan Jr. "Universal Gas Transitions for Pure Substances." Advances in Applied Sciences 10, no. 2 (2025): 23–28. https://doi.org/10.11648/j.aas.20251002.11.

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Classical models of phase transitions have traditionally assumed that at the critical point of a pure substance, the temperature, pressure, and density simultaneously reach unique critical values. However, experimental findings demonstrate that along the liquid–vapor equilibrium curve, only the temperature (Tcr) attains a true critical state, while the pressure and density vary depending on experimental conditions. Furthermore, for the liquid–solid equilibrium curve at high pressures, a critical point associated with the disappearance of the metastable liquid phase has been experimentally iden
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30

Primc, Gregor. "Strategies for Improved Wettability of Polyetheretherketone (PEEK) Polymers by Non-Equilibrium Plasma Treatment." Polymers 14, no. 23 (2022): 5319. http://dx.doi.org/10.3390/polym14235319.

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Polyetheretherketone (PEEK) is the material of choice in several applications ranging from the automotive industry to medicine, but the surface properties are usually not adequate. A standard method for tailoring surface properties is the application of gaseous plasma. The surface finish depends enormously on the processing parameters. This article presents a review of strategies adapted for improved wettability and adhesion of PEEK. The kinetics of positively charged ions, neutral reactive plasma species, and vacuum ultraviolet radiation on the surface finish are analyzed, and synergies are s
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31

Vesel, Alenka, Rok Zaplotnik, Gregor Primc, et al. "Non-Equilibrium Plasma Methods for Tailoring Surface Properties of Polyvinylidene Fluoride: Review and Challenges." Polymers 13, no. 23 (2021): 4243. http://dx.doi.org/10.3390/polym13234243.

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Modification and functionalization of polymer surface properties is desired in numerous applications, and a standard technique is a treatment with non-equilibrium gaseous plasma. Fluorinated polymers exhibit specific properties and are regarded as difficult to functionalize with polar functional groups. Plasma methods for functionalization of polyvinylidene fluoride (PVDF) are reviewed and different mechanisms involved in the surface modification are presented and explained by the interaction of various reactive species and far ultraviolet radiation. Most authors used argon plasma but reported
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32

Tsolas, Nicholas, Jong Guen Lee, and Richard A. Yetter. "Flow reactor studies of non-equilibrium plasma-assisted oxidation of n -alkanes." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, no. 2048 (2015): 20140344. http://dx.doi.org/10.1098/rsta.2014.0344.

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The oxidation of n -alkanes (C 1 –C 7 ) has been studied with and without the effects of a nanosecond, non-equilibrium plasma discharge at 1 atm pressure from 420 to 1250 K. Experiments have been performed under nearly isothermal conditions in a flow reactor, where reactive mixtures are diluted in Ar to minimize temperature changes from chemical reactions. Sample extraction performed at the exit of the reactor captures product and intermediate species and stores them in a multi-position valve for subsequent identification and quantification using gas chromatography. By fixing the flow rate in
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33

Liu, Kai, Sai Li, Jinjin Han, Qi Li, Guangning Liao, and Zeyi Xin. "Synergistic low-temperature plasma (DBD) treatment of n-hexane gas." E3S Web of Conferences 520 (2024): 02017. http://dx.doi.org/10.1051/e3sconf/202452002017.

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The experiment is based on a single dielectric barrier discharge (DBD) plasma generator, using micro-discharge to produce non-equilibrium plasma synergizing with two different catalysts (TiO2, 4A molecular sieve) to decompose n-hexane gas. In the n-hexane degradation experiment, the study investigates the influence of factors such as the type of catalyst, discharge voltage, and flow rate on the degradation rate of n-hexane. The experiments revealed that in all synergistic experiments with catalysts, the degradation rate of n-hexane increased with the decrease in flow rate and with the increase
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34

Date, Ayumi, Kazutaka Kitamori, Yosuke Sakai, and Hiroaki Tagashira. "Self-Consistent Monte Carlo Modelling of Non-Equilibrium rf Plasma in Argon Gas." IEEJ Transactions on Fundamentals and Materials 111, no. 11 (1991): 962–70. http://dx.doi.org/10.1541/ieejfms1990.111.11_962.

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35

Matsuoka, Kazuki, Naoki Okamoto, Daisuke Ando, et al. "G212 Influence of gas flow rate on Si deposition rate by non-equilibrium plasma CVD." Proceedings of the Thermal Engineering Conference 2012 (2012): 435–36. http://dx.doi.org/10.1299/jsmeted.2012.435.

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36

KOYANO, Ayaka, Shinji KAMBARA, and Masanori ABE. "307 Oxidation Mechanisms of Hydrogen Off-gas from Fuel Cells by Atmospheric Non-equilibrium Plasma." Proceedings of the Symposium on Environmental Engineering 2009.19 (2009): 273–76. http://dx.doi.org/10.1299/jsmeenv.2009.19.273.

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37

Sharma, Vinita, Katsuhiko Hosoi, Tamio Mori, and Shin-ichi Kuroda. "Electrical and Optical Characterization of Cold Atmospheric Pressure Plasma Jet and the Effects of N2 Gas on Argon Plasma Discharge." Applied Mechanics and Materials 268-270 (December 2012): 522–28. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.522.

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In this study, we conducted experiments to investigate the electrical and optical characteristics of a non-equilibrium Ar-N2 plasma discharge at atmospheric pressure. To obtain the plasma discharge we used our indigenously designed plasma generating device named CAPPLAT (Cold Atmospheric Pressure Plasma Torch) which was manufactured by Cresur Corporation. The plasma discharge obtained with only Ar gas was quite filamentary. So, to achieve a homogeneous discharge N2 gas was admixed. The effects of different volumes of admixed N2 gas were also studied. The optical emission spectroscopy was used
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Zhang, Yanjie, Yu Wang, Jingwen Xu, Chengzhi Guo, Wei Jiang, and Ya Zhang. "Numerical characterization of dual radio frequency micro-discharges." AIP Advances 13, no. 3 (2023): 035111. http://dx.doi.org/10.1063/5.0135426.

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Micro-discharges have many excellent characteristics, such as generation of high-density and non-equilibrium plasmas at atmospheric pressure. In this paper, we used an implicit particle-in-cell/Monte Carlo collision method for three-dimensional velocities in a one-dimensional space combined with the secondary electron emission model to study the characteristics of micro-discharges driven by dual radio frequency (RF) power. The effect on plasma parameters was observed by varying the voltage of the RF power, the frequency, and the gas pressure of the discharge. Since the electrode spacing is ver
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Siddanathi, S. L., L. G. Westerberg, H. O. Åkerstedt, H. Wiinikka, and A. Sepman. "Computational modeling and temperature measurements using emission spectroscopy on a non-transferred plasma torch." AIP Advances 13, no. 2 (2023): 025019. http://dx.doi.org/10.1063/5.0129653.

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A non-transferred plasma torch is a device used to generate a steady thermal plasma jet. Plasma torches have the potential to replace fossil fuel burners used as heat sources in the process industry. Today, however, the available plasma torches are of small scale compared to the power used in the burners in the process industry. In order to understand the effects of large scales on the plasma flow dynamics, it is essential to understand the operation of the plasma torch under different operating conditions and for different geometries. In this study, the analysis of a non-transferred plasma to
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40

Barni, Ruggero, Prince Alex, and Claudia Riccardi. "Pulsed Dielectric Barrier Discharges for Gas-Phase Composition Control: A Simulation Model." Plasma 6, no. 4 (2023): 735–52. http://dx.doi.org/10.3390/plasma6040050.

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We present results obtained from the numerical simulation of the gas-phase chemical kinetics in atmospheric pressure air non-equilibrium plasmas. In particular, we addressed the effect of the pulsed operation mode of a planar dielectric barrier discharge. As conjectured, the large difference in the time scales involved in the fast dissociation of molecules in plasmas and their subsequent reactions to produce stable chemical species makes the presence of a continuously repeated plasma production stage unnecessary and a waste of electrical power and efficiency. The results on NOx remediation, oz
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41

Bogatskaya, A. V., I. V. Smetanin, E. A. Volkova, and A. M. Popov. "Guiding and amplification of microwave radiation in a plasma channel created in gas by intense ultraviolet laser pulse." Laser and Particle Beams 33, no. 1 (2014): 17–25. http://dx.doi.org/10.1017/s0263034614000755.

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AbstractThe evolution of non-equilibrium plasma channel created in xenon by powerful KrF-femtosecond laser pulse is studied. It is demonstrated that such a plasma channel can be used as a waveguide for both transportation and amplification of the microwave radiation. The specific features of such a plasma waveguide are studied on the basis of the self-consistent solution of the kinetic Boltzmann equation for the electron energy distribution function in different spatial points of the gas media and the wave equation in slow-varying amplitude approximation for the microwave radiation guided and
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Sharma, Vinita, Katsuhiko Hosoi, Tamio Mori, and Shin-ichi Kuroda. "Effects of Cold Atmospheric Pressure Plasma Jeton the Viability of Bacillus subtilis Endospores." Advanced Materials Research 647 (January 2013): 524–31. http://dx.doi.org/10.4028/www.scientific.net/amr.647.524.

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In this study, we conducted experiments to investigate the effectiveness of a non-equilibrium Ar-N2 plasma jet generated by a Cold Atmospheric Pressure Plasma Torch (CAPPLAT) at a sinusoidal voltage of 20 kV, frequency of 30 kHz with 10 slm of Ar gas and 100 sccm of N2 gas. Highly environmental stress resistant bacterial endospores of Bacillus subtilis, dried on an agar disc were exposed to the plasma discharge from the CAPPLAT for different durations. The viability of spores after plasma exposure was checked by counting CFUs by serial dilution method. We also measured the amount of released D
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43

Alvarez Laguna, A., B. Esteves, A. Bourdon, and P. Chabert. "A regularized high-order moment model to capture non-Maxwellian electron energy distribution function effects in partially ionized plasmas." Physics of Plasmas 29, no. 8 (2022): 083507. http://dx.doi.org/10.1063/5.0095019.

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A model for electrons in partially ionized plasmas that self-consistently captures non-Maxwellian electron energy distribution function (EEDF) effects is presented. The model is based on the solution of scalar and vectorial velocity moments up to the contracted fourth-order moment. The set of fluid (macroscopic) equations is obtained with Grad's method and exact expressions for the collision production terms are derived, considering the electron–electron, electron–gas, and electron–ion elastic collisions as well as for electron–gas excitation and ionization collisions. A regularization of the
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Kublanovsky, V.S., A.V. Kravchenko, and O.L. Bersirova. "Faradaic Processes in The Interaction of Low-Temperature Plasma with Water and Aqueous Solutions." Elektronnaya Obrabotka Materialov 54(3) (June 15, 2018): 15–20. https://doi.org/10.5281/zenodo.1297933.

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The paper considers the mechanism of the reaction that leads to a change in the physicochemical properties of water in case of its electrochemical activation with non-equilibrium plasma. The uniqueness of the method of low-temperature plasma electrolysis (LTPE) consists in the fact that one electrode is in the liquid phase while the other is placed at some distance from the liquid surface, which offers new possibilities of the electrochemical method. It is shown that when water is treated by LTPE, destructive changes take place in it, which results in the formation of peroxide and superoxide c
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Koskin, Ye V., G. S. Dragan, and A. M. Saad. "Average Size and Density of Clusters in Dusty Plasma." Ukrainian Journal of Physics 56, no. 12 (2022): 1290. http://dx.doi.org/10.15407/ujpe56.12.1290.

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As is well known, metal and metal oxide dust particles either in combustion plasmas or in low-pressure gas-discharge plasmas are able to get a positive or negative charge. When the particles are identically charged, the Debye interparticle repulsion force arises. However, due to the additional interaction of grains with plasma electrons and ions, the resultant intergrain pair potential energy becomes non-Debye. As a result, it can cause local minima by certain plasma parameters. This case develops a quasimolecular structuralization, where two equally charged grains are spaced at a finite dista
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Surace, Mikaela J., Jimmy Murillo-Gelvez, Mobish A. Shaji, et al. "Plasma-Assisted Abatement of Per- and Polyfluoroalkyl Substances (PFAS): Thermodynamic Analysis and Validation in Gliding Arc Discharge." Plasma 6, no. 3 (2023): 419–34. http://dx.doi.org/10.3390/plasma6030029.

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Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic organofluorine surfactants that are resistant to typical methods of degradation. Thermal techniques along with other novel, less energy-intensive techniques are currently being investigated for the treatment of PFAS-contaminated matrices. Non-equilibrium plasma is one technique that has shown promise for the treatment of PFAS-contaminated water. To better tailor non-equilibrium plasma systems for this application, knowledge of the energy required for mineralization, and in turn the roles that plasma reactive species and heat c
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De Nittis, Giuseppe, and Antonio Moro. "Thermodynamic phase transitions and shock singularities." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2139 (2011): 701–19. http://dx.doi.org/10.1098/rspa.2011.0459.

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We show that, under rather general assumptions on the form of the entropy function, the energy balance equation for a system in thermodynamic equilibrium is equivalent to a set of nonlinear equations of hydrodynamic type. This set of equations is integrable via the method of characteristics and it provides the equation of state for the gas. The shock wave catastrophe set identifies the phase transition. A family of explicitly solvable models of non-hydrodynamic type such as the classical plasma and the ideal Bose gas is also discussed.
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Nurmammadov, Mahammad. "New Approaches on the Theory of Planetary Sciences: Applications of Non-Classical Equations of Mathematical Physics for Plasma Models of Jupiter’s Magnetosphere." American Journal of Astronomy and Astrophysics 11, no. 1 (2024): 14–32. http://dx.doi.org/10.11648/j.ajaa.20241101.12.

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In this paper, considered non-classical equations of mathematical physics are applied in the fields of astronomy and astrophysics in the case of plasma models of Jupiter’s magnetosphere. It is known that non-classical equations of mathematical physics have applications in gas dynamics, aerodynamics, hydrodynamics, and magneto-hydrodynamics. According to comparisons and observation results of Pioner-10, 11, and Voyager 1-2, considered mathematical models of Jupiter’s magnetosphere, which is cold plasma, as searches of Jupiter’s Io. At first, the mathematical justification of the physical proces
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Понизовский, А. З., С. Г. Гостеев, О. С. Кужель, and А. С. Смирнов. "INDUSTRIAL FACILITIES FOR AIR CLEANING WITH THE USE OF LOW TEMPERATURE NON-EQUILIBRIUM GAS-DISCHARGE PLASMA." Химическая безопасность / Chemical Safety Science 2, no. 2(4) (2018): 212–28. http://dx.doi.org/10.25514/chs.2018.2.14118.

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Аннотация - Описаны промышленные установки для очистки воздуха от экологически вредных газообразных примесей, принцип действия которых основан на низкотемпературной неравновесной плазме газового разряда. На основе этой технологии ФМКБ «Горизонт» на протяжении 5 лет серийно выпускает линейку модульных промышленных установок под общей маркой «Корона» с производительностью в диапазоне 1-15·е-3 н. м3/час. Представлены физические принципы работы этих установок. Описана конструкция установок и их технико-экономические показатели. Представлены результаты по очистке выбросных газов промышленных и комм
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Tashiro, Shinichi, Manabu Tanaka, and Anthony B. Murphy. "Numerical analysis of non-equilibrium plasma property in anode boundary layer of argon Gas Tungsten Arc." Surface and Coatings Technology 205 (December 2010): S115—S119. http://dx.doi.org/10.1016/j.surfcoat.2010.06.044.

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