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Статті в журналах з теми "Streams of charged particles"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Antonov, YU V. "ABNORMAL CHANGES OF THE NON-TIDAL VARIATIONS OF GRAVITY." Proceedings of higher educational establishments. Geology and Exploration, no. 2 (April 28, 2017): 70–76. http://dx.doi.org/10.32454/0016-7762-2017-2-70-76.

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Non-tidal variations of gravity are the residual part of the monitoring of the variations after subtraction from them the lunar-solar gravity variations and the drift of the zero point of the gravimeter. Non-tidal variations are sometimes of complex morphology and structure. The sources of the non-tidal variations are the intracrustal processes and flows of the charged particles in space. The streams of the charged particles can affect the sensor of the gravimeter. The streams of the charged particles can create a powerful magnetic hydrodynamic (MHD) shocks that cause abnormal changes of gravi

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2

Krivonos, Yu G., and L. I. Samoilenko. "Boundary multielectrode structures for controlling streams of charged particles." Cybernetics and Systems Analysis 35, no. 3 (1999): 491–99. http://dx.doi.org/10.1007/bf02733437.

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3

Mamitjonovich, Tojiboyev Begijon, Yakubjonov Fayzulloh Tursunali O‘G‘Li, and Xojimatov Umidbek Turgʻunboy Oʻgʻli. "INVESTIGATION OF STRENGTH PROPERTIES OF RADIATION-MODIFIED POLYMER COATINGS." American Journal of Engineering and Technology 5, no. 12 (2023): 47–51. http://dx.doi.org/10.37547/tajet/volume05issue12-12.

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One of the methods for improving the properties of polymer coatings is radiation treatment. It is mainly carried out by ultraviolet rays and ionizing radiation. There are several types of ionizing radiation: radiation caused by deep changes in the electron shell and the nucleus of the atom and having the nature of electromagnetic oscillations, x-ray and γ-radiation; streams of charged particles that can have both positive and negative charges.

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4

Woo, Joseph L., Neha Sareen, Allison N. Schwier, and V. Faye McNeill. "Concept for an electrostatic focusing device for continuous ambient pressure aerosol concentration." Atmospheric Measurement Techniques 12, no. 6 (2019): 3395–402. http://dx.doi.org/10.5194/amt-12-3395-2019.

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Abstract. We present a concept for enhancing the concentration of charged submicron aerosol particles in a continuous-flow stream using in situ electrostatic focusing. It is proposed that electrostatic focusing can enable the continuous, isothermal concentration of aerosol particles at ambient pressure, without altering their chemical composition. We model this approach theoretically and demonstrate proof of concept via laboratory measurements using a prototype. The prototype design consists of a nozzle-probe flow system analogous to a virtual impactor. The device was tested in the laboratory

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5

Meierovich, B. E. "Macroscopic Stability of Charged Particle Streams." IEEE Transactions on Plasma Science 14, no. 6 (1986): 683–89. http://dx.doi.org/10.1109/tps.1986.4316619.

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6

Qi, Bing, Hui Wang, Chang Liu, et al. "Numerical Simulation of Streaming Discharge Characteristics of Free Metal Particles in SF6/CF4 Gas Mixtures Under Highly Heterogeneous Electric Field." Sensors 25, no. 13 (2025): 3847. https://doi.org/10.3390/s25133847.

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Compared to pure SF6 gas, the SF6/CF4 gas mixture exhibits certain advantages in reducing greenhouse effects, lowering the liquefaction temperature, and decreasing the sensitivity to non-uniform electric fields, demonstrating significant application potential in high-voltage electrical equipment. This study employs a two-dimensional plasma fluid model to investigate the partial discharge phenomena induced by free metallic particles in SF6/CF4 gas mixtures, analyzing the spatiotemporal evolution characteristics of key parameters, such as the charged particle density and axial electric field, un

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7

Sytova, S. N. "Nonlinear Dynamics of Radiation in Multiple-Beam Vacuum Electronic Devices." Nonlinear Phenomena in Complex Systems 25, no. 4 (2022): 359–67. http://dx.doi.org/10.33581/1561-4085-2022-25-4-359-367.

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The article is devoted to overview of different types of vacuum electronic devices with two or more charged particle beams. There are travelling wave and backward wave tubes, free electron lasers and masers, volume free electron lasers. Two different cases take place in such situation: multiple-beam instability in such devices and multiple-stream instability. In the first case some charged particle beams moves in the system with different velocities. In the second one there are beams with almost equal velocities (streams). Two systems of equations for volume free electron laser with two electr

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8

Chen, Minjun, Guido Bolognesi, and Goran T. Vladisavljević. "Crosslinking Strategies for the Microfluidic Production of Microgels." Molecules 26, no. 12 (2021): 3752. http://dx.doi.org/10.3390/molecules26123752.

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This article provides a systematic review of the crosslinking strategies used to produce microgel particles in microfluidic chips. Various ionic crosslinking methods for the gelation of charged polymers are discussed, including external gelation via crosslinkers dissolved or dispersed in the oil phase; internal gelation methods using crosslinkers added to the dispersed phase in their non-active forms, such as chelating agents, photo-acid generators, sparingly soluble or slowly hydrolyzing compounds, and methods involving competitive ligand exchange; rapid mixing of polymer and crosslinking str

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9

GUTIÉRREZ-PIÑERES, ANTONIO C., GONZALO GARCÍA-REYES, and GUILLERMO A. GONZÁLEZ. "EXACT RELATIVISTIC MODELS OF THIN DISKS AROUND STATIC BLACK HOLES IN A MAGNETIC FIELD." International Journal of Modern Physics D 23, no. 01 (2014): 1450010. http://dx.doi.org/10.1142/s0218271814500102.

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The exact superposition of a central static black hole with surrounding thin disk in presence of a magnetic field is investigated. We consider two models of disk, one of infinite extension based on a Kuzmin–Chazy–Curzon metric and other finite based on the first Morgan–Morgan disk. We also analyze a simple model of active galactic nuclei (AGN) consisting of black hole, a Kuzmin–Chazy–Curzon disk and two rods representing jets, in presence of magnetic field. To explain the stability of the disks, we consider the matter of the disk made of two pressureless streams of counter-rotating charged par

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10

Izvekova, Yu N., S. I. Popel, and A. P. Golub’. "Wave Processes in Dusty Plasma near the Mercury’s Surface." Физика плазмы 49, no. 7 (2023): 695–702. http://dx.doi.org/10.31857/s0367292123600346.

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Wave processes in dusty plasma near the surface of Mercury are discussed. The near-surface layers of Mercury’s exosphere have a number of common features with those of the exosphere of the Moon, e.g., there are dust particles above the illuminated side of both cosmic bodies that become positively charged due to the photoelectric effect. Mercury has its own magnetosphere that protects the surface from particles of the solar wind. However, the solar wind can reach the surface of the planet near the magnetic poles. Therefore, dust particles of the same size get different charges depending on thei

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11

Nikitin, A. I., V. A. Nikitin, A. M. Velichko, and T. F. Nikitina. "The process of superdeep penetration of high-speed metallic particles in solid body." Kristallografiâ 69, no. 5 (2024): 811–20. http://dx.doi.org/10.31857/s0023476124050071.

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An explanation of the effects arising at the collision of a stream of metal particles with a size of 10–100 microns, moving at a speed of 1–3 km/s, with a solid target is proposed. It is assumed that at the moment of impact on the target, the particle loses some electrons and for some time, due to the presence of an oxide shell, retains a positive charge. The flow of electrons passing through the target at the moment of impact generates an electromagnetic field pulse. A particle with a charge of about 10–9 C, having penetrated into a solid target, presses on the channel wall with a force of ab

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12

Mann, I., and M. Hamrin. "Dust dynamic pressure and magnetopause displacement: reasons for non-detection." Annales Geophysicae 31, no. 1 (2013): 39–44. http://dx.doi.org/10.5194/angeo-31-39-2013.

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Abstract. In a recent paper, Treumann and Baumjohann (2011) propose that the contribution of dust particles to the solar wind dynamic pressure can cause large compressions of the Earth's magnetopause and suggest that this occurs when Earth encounters meteoroid streams. In this paper we estimate the contribution from charged dust particles to the solar wind dynamical pressure, and we exclude that the dust associated to meteoroid streams can influence the extension of the magnetopause according to the proposed model. A sufficient coupling to the solar wind is only expected for so-called nanodust

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13

Hamid K. Radam and Ahmed K. Hashoosh. "Experimental studies of streamer diameters and velocities in dielectric liquid with positive and negative polarity." Journal of Wasit for Science and Medicine 4, no. 2 (2022): 12–18. http://dx.doi.org/10.31185/jwsm.135.

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A streamer in dielectric liquid (transformer oil) is consist of charged particles (electron, positive and negative ion). It has many properties such as: streamer velocity, streamer diameter, mean electron energy, number of streamers branches and current density. Some of these properties have been detected by using the photographic technique to get a data and it should be in a good agreement with theoretical and experimental results. The streamers diameters and streamers velocity are increased with voltage.

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14

Semykin, S. І., Т. S. Golub, L. S. Molchanov, and P. H. Prokopenko. "Analysis of the influence mechanisms of activated oxygen streams on dust emission processes in oxygen-converter process." Fundamental and applied problems of ferrous metallurgy 37 (2023): 246–59. http://dx.doi.org/10.52150/2522-9117-2023-37-246-259.

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In the global practice of ferrous metallurgy, in connection with the aggravation of the environmental issue of the production process and the need to find new methods of general improvement of manufacturability, non-traditional methods of intensification are increasingly being turned to, which expand the capabilities of existing metallurgical processes and do not require significant capital investments and drastic changes in production. In this regard, it is urgent to carry out research on methods of exposure to activated oxygen jets by creating an active ozone-containing gas flow through the

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15

Sol, Hélène, and Lourdes Vicente. "A Tentative Sketch for BL Lacertae Objects." Symposium - International Astronomical Union 159 (1994): 473. http://dx.doi.org/10.1017/s0074180900176521.

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VLBI polarization data show magnetic field configuration parallel to the nuclear jet in quasars and perpendicular to it in BL Lac objects. It appears difficult to account for this contrast within the unified scheme for AGN. To investigate a direct explanation of this peculiarity of BL Lac objects, we study the possibilities of propagation and radiation of beams of particles in transverse ambient magnetic field. High energy streams with kinetic energy density larger than the ambient magnetic one, Ekin > Emag, can easily propagate with enhancement of the transverse magnetic field at the leadi

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16

Iskakov, B. A., A. Kh Arginova, K. A. Argynov, et al. "USING THE PENETRATING ABILITY OF COSMIC MUONS FOR THE EARTHQUAKE PREDICTION." NNC RK Bulletin 1, no. 4 (2019): 23–27. http://dx.doi.org/10.52676/1729-7885-2019-4-23-27.

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The study of radiation erosion began in the 50–70 s of the last century. It was relatively quickly shown that the removal of atoms and molecules from the surface when irradiated with low-current beams of accelerated ions with energies of 102–104 eV occurs as a result of pairwise collisions of fast particles with atoms of matter, i.e. so-called collision spraying. Cosmic ray muons are also high-energy charged particles, and therefore there is a possibility that they, too, can destroy the structure of solids when hit. It is this property of muons that suggested that they can be used to predict a

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17

Dalcin, Maurielem Guterres, Deivid Marques Nunes, J. J. R. Damasceno, and F. O. Arouca. "Project and Construction of a Differential Mobility Analyzer to Produce Monosized Nanoparticles." Materials Science Forum 802 (December 2014): 197–202. http://dx.doi.org/10.4028/www.scientific.net/msf.802.197.

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The nanotechnology has become an important area, either because the special features of nanometric particles confer to products, or due to a maximum limit of emission of such particles in air. However, the reduced size of this kind of particle limit them to be separated by conventional techniques, and a good way to ensure an aerosol stream with monodispersed particles is to use the electrical mobility technique. This theory is based on the ability of a charged particle to cross an electrical field, thus depending of the size of particles, the bigger ones will arrive later in the central electr

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18

Bertke, Maik, Ina Kirsch, Erik Uhde, and Erwin Peiner. "Ultrafine Aerosol Particle Sizer Based on Piezoresistive Microcantilever Resonators with Integrated Air-Flow Channel." Sensors 21, no. 11 (2021): 3731. http://dx.doi.org/10.3390/s21113731.

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To monitor airborne nano-sized particles (NPs), a single-chip differential mobility particle sizer (DMPS) based on resonant micro cantilevers in defined micro-fluidic channels (µFCs) is introduced. A size bin of the positive-charged fraction of particles herein is separated from the air stream by aligning their trajectories onto the cantilever under the action of a perpendicular electrostatic field of variable strength. We use previously described µFCs and piezoresistive micro cantilevers (PMCs) of 16 ng mass fabricated using micro electro mechanical system (MEMS) technology, which offer a lim

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19

Lee, Victor, Scott R. Waitukaitis, Marc Z. Miskin, and Heinrich M. Jaeger. "Direct observation of particle interactions and clustering in charged granular streams." Nature Physics 11, no. 9 (2015): 733–37. http://dx.doi.org/10.1038/nphys3396.

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20

Gomez, Sara, Jaime Humberto Hoyos, and Juan Alejandro Valdivia. "Particle-in-cell method for plasmas in the one-dimensional electrostatic limit." American Journal of Physics 91, no. 3 (2023): 225–34. http://dx.doi.org/10.1119/5.0135515.

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We discuss the particle-in-cell (PIC) method, which is one of the most widely used approaches for the kinetic description of plasmas. The positions and velocities of the charged particles take continuous values in phase space, and spatial macroscopic quantities, such as the charge density and self-generated electric fields, are calculated at discrete spatial points of a grid. We discuss the computer implementation of the PIC method for one-dimensional plasmas in the electrostatic regime and discuss a desktop application (PlasmAPP), which includes the implementation of different numerical and i

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21

NP, Takuchev. "Streams of High-Energy Solar Alpha Particles - The Cause of Both Rising Global Temperature (Global Warming) and Partly Human Mortality?" Physical Science & Biophysics Journal 8, no. 1 (2024): 1–15. http://dx.doi.org/10.23880/psbj-16000267.

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In the present work, the author presents arguments that global warming of at least the last 70 years is partly or entirely caused by changes in the solar magnetic field and is probably a consequence of ionizing radiation emitted as a result of solar activity. The ionizing radiation is positively charged particles with high energy. They penetrate deep into the Earth's atmosphere, creating in the atmosphere an increased content of ions serving as condensation nuclei, which increases cloudiness in the lower atmosphere and lowers the surface air temperature. When solar activity decreases as observ

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22

Kuznetsov, A. A., and N. G. Konopasov. "Generation of an electric charge of particles with small mobility." Physics of Aerodisperse Systems, no. 51 (March 19, 2014): 79–86. http://dx.doi.org/10.18524/0367-1631.2014.51.160085.

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Results of natural experiments with meteotron complex "Atmosphere" are discussed. For stimulation of clouds development in an ascending stream it is entered up to 100 kg/c the water fog formed water atomization charged particles by a turbo jet. The preliminary analysis of results of modeling experiences on электризации water-drop stream is carried out.

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23

CLARK, S. ERIC, M. ROSENBERG, and K. QUEST. "Simulations of two-stream instability in opposite polarity dusty plasmas." Journal of Plasma Physics 78, no. 3 (2012): 211–24. http://dx.doi.org/10.1017/s0022377811000626.

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AbstractOne-dimensional Particle in Cell simulations of a dust–dust counterstreaming instability in a plasma containing dust grains of opposite charge polarity are presented. This dust–dust instability has potentially the lowest threshold drift for a dust wave instability in an unmagnetized dusty plasma. The linear and nonlinear development of this instability is investigated, including the effects of collisions with background neutrals, and a background electric field that acts as a driver to impart the drift velocities of the counter-streaming oppositely charged dust particles. The saturatio

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24

Helling, Ch, M. Jardine, C. Stark, P. Rimmer, and D. Diver. "Cloud and Gas Ionisation in Atmosphere of Gas-Giant Planets." Proceedings of the International Astronomical Union 8, S293 (2012): 292–96. http://dx.doi.org/10.1017/s1743921313013021.

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AbstractThe steady increase of the sample of know extrasolar planets broadens our knowledge and at the same time, reveals our lack of understanding. Habitability is a wide expression, needing planet formation theory and microphysics of cloud formation at the same time. The habitability of a planet depends, amongst other things, on how much radiation reached the ground and how much of potentially dangerous radiation is absorbed on the way through the atmosphere. For this, we need to understand cloud formation and it's impact on the atmosphere.We have studied the formation of mineral clouds on p

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25

Ижовкина, Н.И., Н.С. Ерохин, Л.А. Михайловская та С.Н. Артеха. "Особенности взаимодействия плазменных вихрей в атмосфере и ионосфере". Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa 12, № 4 (2015): 106–16. https://doi.org/10.5281/zenodo.2579372.

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Electric fields are observed according to the investigation of atmospheric clouds. In an inhomogeneous gyrotropic medium occurrence of vortex structures is stochastically determined. Gyrotropy of atmosphere and ionosphere is caused by the Coriolis force and the motion of charged particles in the geomagnetic field. Vortices of plasma nature are registered in the atmosphere. The origin of the electric field of plasma vortices occurs in the fields of pressure gradients mosaic mesh topology is conditioned by the ionization of particles associated with the solar photon flux and the cosmic radiation

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26

Mitchell, J. G., C. M. S. Cohen, T. J. Eddy, et al. "A Living Catalog of Parker Solar Probe IS⊙IS Energetic Particle Enhancements." Astrophysical Journal Supplement Series 264, no. 2 (2023): 31. http://dx.doi.org/10.3847/1538-4365/aca4c8.

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Abstract Energetic charged particles are pervasive throughout the heliosphere with contributions from solar energetic particle events, stream and corotating interaction regions, galactic cosmic rays, anomalous cosmic rays, and suprathermal ions. The Integrated Science Investigation of the Sun (IS⊙IS) on board the Parker Solar Probe is a suite of energetic particle detectors covering the energy range ∼20 keV–200 MeV nuc−1. IS⊙IS measures energetic particles closer to the Sun than any instrument suite in history, providing a singular view of the energetic particle population in a previously unex

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27

Coutsias, Evangelos A. "Caustics and virtual cathodes in electron beams." Journal of Plasma Physics 40, no. 2 (1988): 369–84. http://dx.doi.org/10.1017/s0022377800013349.

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A simplified model is discussed that captures the basic physics of the phenomenon of oscillatory virtual cathodes in electron beams. A monoenergetic non-relativistic one-dimensional electron beam is injected through a conducting grid into a semi-infinite drift space. Attraction from image charges (and, possibly, an adverse externally applied electric field) cause particle reflection and the formation of a caustic where the charge density has an integrable singularity. The steady-state solution of the Vlasov equation describing the flow is known from numerical simulation to be unstable, but ana

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28

Syomkin, N. D., and A. S. Vidmanov. "Models of lunar dust motion dynamics and methods of producing streams of charged dust particles in a laboratory environment." VESTNIK of the Samara State Aerospace University, no. 2(40) (April 29, 2014): 164. http://dx.doi.org/10.18287/1998-6629-2013-0-2(40)-164-177.

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29

Pelesz, Adam, and Tomasz Czapka. "Empirical and Numerical Analysis of Conduction and Induction Charging of Droplets in a Three-Electrode System." Energies 13, no. 2 (2020): 469. http://dx.doi.org/10.3390/en13020469.

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The charging process of water droplets in different electrification systems using empirical and numerical analysis is described. A simplified model based on capacitance distribution is proposed. The results of the experimental studies and numerical calculations enable comparison of the induction and conduction charging methods in terms of the droplet charging level, described by the Q/m parameter. Research findings indicate that the conduction method in a 3-electrode system is the most effective among all the considered methods. It has been also shown that the application of a 2-electrode syst

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30

Halekas, J. S., S. D. Bale, M. Berthomier, et al. "Quantifying the Energy Budget in the Solar Wind from 13.3 to 100 Solar Radii." Astrophysical Journal 952, no. 1 (2023): 26. http://dx.doi.org/10.3847/1538-4357/acd769.

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Abstract A variety of energy sources, ranging from dynamic processes, such as magnetic reconnection and waves, to quasi-steady terms, such as plasma pressure, may contribute to the acceleration of the solar wind. We utilize a combination of charged particle and magnetic field observations from the Parker Solar Probe (PSP) to attempt to quantify the steady-state contribution of the proton pressure, the electric potential, and the wave energy to the solar wind proton acceleration observed by PSP between 13.3 and ∼100 solar radii (R ☉). The proton pressure provides a natural kinematic driver of t

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31

Newton, Rosie, Mike J. Scott та Malcolm J. Joyce. "Investigating artifacts associated with β-particle interactions in charge-coupled devices". International Journal of Modern Physics: Conference Series 48 (січень 2018): 1860117. http://dx.doi.org/10.1142/s2010194518601175.

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Charge-coupled devices (CCDs) show potential for detecting charged particles and ionizing radiation. In particular, the clusters in the pixel images produced can be distinctive for [Formula: see text] and [Formula: see text] radiation, with [Formula: see text] particles causing symmetrical clusters or vertical tracks, and [Formula: see text] particles causing long, curved tracks. This distinction may be exploited by means of a handheld, portable device for in-situ detection, and identification of radioactive contamination. [Formula: see text]-particle track interactions in CCDs have been inves

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32

Khan, Rizwan, Muhammad Ali Inam, Ick Tae Yeom, Kang Hoon Lee, and Kashif Hussain Mangi. "Removal of Nano-Zinc Oxide (nZnO) from Simulated Waters by C/F/S—Focusing on the Role of Synthetic Coating, Organic Ligand, and Solution Chemistry." Processes 11, no. 9 (2023): 2604. http://dx.doi.org/10.3390/pr11092604.

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Increased usage of nano-zinc oxide (nZnO) in different commercial fields has raised serious concerns regarding their discharge into the water streams containing natural and synthetic coating agents. Moreover, utilization of ground and surface water for drinking purposes is a common approach in many countries. Therefore, the removal of nZnO particles from water is essential to minimize the risk to the environment. The present research investigated the removal of nZnO from complex water matrices by conventional coagulation-flocculation-sedimentation (C/F/S) process using polyaluminum chloride (P

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33

Antonovich, D. A., V. A. Gruzdev, V. G. Zalesski, and P. N. Soldatenko. "Plasma source of charged particles for the formation of combined ion-electron beams." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 65, no. 3 (2020): 285–91. http://dx.doi.org/10.29235/1561-8358-2020-65-3-285-291.

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One of the ways to increase the efficiency of the implementation of ion-plasma technologies of exposure to the surfaces of various materials is partial or full compensation of the positive charge of ions in the stream or on the treated surface, for which additional emitting systems are used that create compensating electron flows in the discharge space, accelerating gap or on the processed surface. It was previously shown that for the implementation of such a compensating effect, it is possible to use plasma sources of charged particles, capable of forming beams of both signs when the polarity

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34

Abdulameer, Maha F., and Thamir H. Khalaf. "The Simulation of Double Head Streamer Discharge in a 0.5 cm Air Gap." Journal of Physics: Conference Series 2754, no. 1 (2024): 012019. http://dx.doi.org/10.1088/1742-6596/2754/1/012019.

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Abstract The production and evolution of the double-head streamer discharge in air, as well as the characteristics of positive & negative streamers, were described in this work using a computer simulation method. Streamer discharge in a 0.5 cm air’ gap has been modeled and simulated by the fluid model. Under DC voltage, the model was tested using an axisymmetric plane-to-plane electrode layout in two dimensions. The model was implemented in commercial computation software COMSOL Multiphysics version 6.0 based on finite element method (FEM), in which a time-dependent solver was used. Result

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35

Iles, R. H. A., A. N. Fazakerley, A. D. Johnstone, N. P. Meredith, and P. Bühler. "The relativistic electron response in the outer radiation belt during magnetic storms." Annales Geophysicae 20, no. 7 (2002): 957–65. http://dx.doi.org/10.5194/angeo-20-957-2002.

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Abstract. The relativistic electron response in the outer radiation belt during magnetic storms has been studied in relation to solar wind and geomagnetic parameters during the first six months of 1995, a period in which there were a number of recurrent fast solar wind streams. The relativistic electron population was measured by instruments on board the two microsatellites, STRV-1a and STRV-1b, which traversed the radiation belt four times per day from L ~ 1 out to L ~ 7 on highly elliptical, near-equatorial orbits. Variations in the E > 750 keV and E > 1 MeV electrons during the main p

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36

Qu, Lu, Yu Wang, Gang Liu, et al. "Simulation Study on Positive Corona Discharge of Receptors on Rotating Wind Turbine Blade Tips under Thundercloud Electric Fields." Energies 12, no. 24 (2019): 4696. http://dx.doi.org/10.3390/en12244696.

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Recent lightning simulation experiments have not simulated the influence of blade rotation in the long term after corona inception. This study uses a finite element method and considers the adhesion and collision processes of positive ions, aerosol ions, and neutral particles to establish a two-dimensional positive corona discharge model based on a multicomponent diffusion transport equation. The microscopic distribution of these three types of particles and the influence mechanism of charged particles’ migration under electric fields and wind were studied. The results show that ion migration

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37

Bartnik, Andrzej, Karol Jach, Robert Świerczyński, et al. "Dynamics of plasmas produced by a laser pulse, inside a dense gaseous target, formed in an ambient gas." Physics of Plasmas 29, no. 9 (2022): 093302. http://dx.doi.org/10.1063/5.0099683.

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In this work, the time development of plasmas produced by interaction of laser pulses, with a nitrogen gas, was investigated. The interaction took place inside a small portion of dense nitrogen gas injected temporarily into a chamber filled with the gas under low pressure. High-temperature plasmas produced directly by the laser pulse were a source of soft x rays and charged particles, ionizing and exciting the surrounding gas. In this way, low-temperature plasmas were produced. The formation of high-temperature plasmas was studied using soft x-ray spectroscopy and x-ray streak imaging. Low-tem

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38

Chen, Zuyun, Ziyi Zhou, and Jicheng Peng. "Dust Removal Mechanism of the Vibrating String Filter with Charged Water Mist." International Journal of Rotating Machinery 2022 (June 20, 2022): 1–12. http://dx.doi.org/10.1155/2022/5713983.

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The traditional dust removal technology is difficult to meet the strict requirements of environmental protection, so it is of practical significance and research value to study how to purify fine dust in workshop. Fine dust can be suspended in the atmosphere, while reducing the air quality. Excessive inhalation of dust may result in disease. So it should be paid close attention to dust control. The water mist charging process has experienced three stages: induction charge, corona charge transition, and corona charge. When the discharge distance is 80 mm, the charge-mass ratio of droplet and th

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39

Wang, Yongsheng, Yang Meng, Wenyong Jin, Mingbin Peng, and Weidong Ding. "Developing characteristics of the positive streamer in water with microsecond pulse voltage." Physics of Plasmas 30, no. 4 (2023): 043902. http://dx.doi.org/10.1063/5.0140683.

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Underwater discharge is the typical method used to generate plasma in a liquid phase environment and is employed in many engineering applications. This study analyzes the formation and development process of the positive streamer in water under microsecond voltage. The effects of voltage amplitude, liquid conductivity, and the presence of bubbles on the underwater discharge characteristics are analyzed by establishing a two-dimensional finite element simulation model of a needle-plate gap. The simulation results show that the electron density of the streamer in water can reach 1023 m−3, and as

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40

Liapis, Athanasios I. "Expression for the Film Mass-Transfer Coefficient of Charged Solutes in a Liquid Stream Flowing in Packed Beds of Charged Particles and Charged Porous Monoliths." Industrial & Engineering Chemistry Research 44, no. 14 (2005): 5380–87. http://dx.doi.org/10.1021/ie049120w.

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41

Wang, Shi-Han, Lei Li, Tao Chen, et al. "Statistical Characterization of the Magnetic Field in Space during Magnetic Storms." Atmosphere 13, no. 10 (2022): 1578. http://dx.doi.org/10.3390/atmos13101578.

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Magnetic storms are an important type of space weather and are usually caused by large streams of charged elementary particles (ions, for example) generated during solar wind production. The occurrence of magnetic storms can pose a threat to the internal electronics of satellites, communication, navigation, remote sensing, etc. Additionally, ground-based electrical facilities may be impacted. In this paper, we focus on the statistical characteristics of the space channel during the occurrence of magnetic storms. By analyzing the observed data for each component of the magnetic field during a m

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42

Hendawy, Nourhan, Davide Mariotti, David Rutherford, Declan Diver, and PAUL Maguire. "An Experimental Study and a Numerical Modelling of Microdroplets Charged in a Helium Atmospheric Pressure Plasma Jet." ECS Meeting Abstracts MA2022-02, no. 19 (2022): 896. http://dx.doi.org/10.1149/ma2022-0219896mtgabs.

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A droplet passing through a low temperature plasma acquires a net negative charge, Q, and the droplet floating potential increases negatively until positive and negative charge fluxes are balanced. Subsequently electrons arrive at the droplet with a very low net electron energy. Low energy electrons (LEE) may play an important role in for example water chemistry, DNA damage (e.g. in radiotherapy) and electron-initiated nanomaterials synthesis [1]. However obtaining true LEE (< 5 eV) sources compatible with liquid water has not been possible to date. In a previous study, we have shown extrem

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43

Knežević, Katarina, Daniela Reif, Michael Harasek, Jörg Krampe, and Norbert Kreuzinger. "Assessment of Graphical Methods for Determination of the Limiting Current Density in Complex Electrodialysis-Feed Solutions." Membranes 12, no. 2 (2022): 241. http://dx.doi.org/10.3390/membranes12020241.

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Electrodialysis (ED) is a promising technology suitable for nutrient recovery from a wide variety of liquid waste streams. For optimal operating conditions, the limiting current density (LCD) has to be determined separately for each treated feed and ED equipment. LCD is most frequently assessed in the NaCl solutions. In this paper, five graphical methods available in literature were reviewed for LCD determination in a series of five feed solutions with different levels of complexity in ion and matrix composition. Wastewater from microbial fermentation was included among the feed solutions, con

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44

Ijsebaert, Jeroen C., Kees B. Geerse, Jan C. M. Marijnissen, Jan-Willem J. Lammers, and Pieter Zanen. "Electro-hydrodynamic atomization of drug solutions for inhalation purposes." Journal of Applied Physiology 91, no. 6 (2001): 2735–41. http://dx.doi.org/10.1152/jappl.2001.91.6.2735.

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Monodisperse aerosols show therapeutic advantages, but they are difficult to generate. A new method (electrohydrodynamic atomization) is described. A high voltage is applied to a nozzle through which a solution, containing dissolved drug, is pumped. At the nozzle tip, a liquid cone is formed and a stream of monodisperse droplets is released. The droplet diameter is governed by the density, conductivity, and the flow rate of the fluid. The droplets are charged and need to be neutralized. Therefore, a corona discharge system is used. Methylparahydroxybenzoate was used as a model drug, and additi

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45

Redchyts, D. O., and S. V. Moiseienko. "Numerical simulation of unsteady flows of cold plasma during plasma actuator operation." Kosmìčna nauka ì tehnologìâ 27, no. 1 (2021): 85–96. http://dx.doi.org/10.15407/knit2021.01.085.

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The numerical simulation of unsteady flows of cold plasma is considered in this article. A low-temperature non-equilibrium ideal plasma is formed when the plasma actuator interacts with the air. The mathematical model has been developed to describe the behavior of low-temperature plasma. It is based on non-stationary equations describing the dynamics of charged particles and plasma electrodynamics equations. The 14 types of particles: metastable and excited nitrogen and oxygen atoms, positive and negative ions, electrons and atomic oxygen are considered. Volumetric and surface chemical reactio

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46

Shahsavarian, Tohid, and Yang Cao. "An inventive multi-scale, multiphysics modeling approach and comparative analysis of distinctive features of planar ionization waves in air: I. Negative streamers." Journal of Physics D: Applied Physics 55, no. 24 (2022): 245203. http://dx.doi.org/10.1088/1361-6463/ac59fd.

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Abstract A multiscale-multiphysics model of two different patterns of negative discharge (droplets and branches) based on the well-known electro-hydrodynamic equations in a two-dimensional non-axisymmetric configuration is developed to investigate the main features of the negative discharge (e.g. bifurcation, stochastic branching, and evolution of all charged particles including positive and negative ions and electrons). We discuss the challenges behind the finite-element-based streamer models and illustrate the robustness and efficiency of introduced three different meshing techniques via cou

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47

Inaba, K., M. Inaba, M. Naito, and R. M. Steinman. "Dendritic cell progenitors phagocytose particulates, including bacillus Calmette-Guerin organisms, and sensitize mice to mycobacterial antigens in vivo." Journal of Experimental Medicine 178, no. 2 (1993): 479–88. http://dx.doi.org/10.1084/jem.178.2.479.

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Dendritic cells, while effective in sensitizing T cells to several different antigens, show little or no phagocytic activity. To the extent that endocytosis is required for antigen processing and presentation, it is not evident how dendritic cells would present particle-associated peptides. Evidence has now been obtained showing that progenitors to dendritic cells can internalize particles, including Bacillus Calmette-Guerin (BCG) mycobacteria. The particulates are applied for 20 h to bone marrow cultures that have been stimulated with granulocyte/macrophage colony-stimulating factor (GM-CSF)

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48

Яхнина, Т. А., Т. А. Попова, А. А. Любчич, and А. Г. Демехов. "MANIFESTATION OF INTERHEMISPHERIC ASYMMETRY OF THE MAGNETIC FIELD IN STREAMS OF CHARGED TRAPPED AND PRECIPITATING PARTICLES ON LOW-ORBIT SATELLITES IN CALM AND DISTURBED CONDITIONS." PHYSICS OF AURORAL PHENOMENA 46, no. 1 (2023): 80–83. http://dx.doi.org/10.51981/2588-0039.2023.46.017.

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Высыпания релятивистских (>800 кэВ) электронов и потоки высыпающихся и захваченных энергичных (~100 кэВ) протонов чаще всего регистрируются во время геомагнитных возмущений, особенно, во время суббурь. При этом наблюдаются возмущения магнитного поля в субавроральной и авроральной областях (50–75 CGMLat). В результате развития ионно-циклотронной неустойчивости во внутренней магнитосфере происходит генерация электромагнитных ионно-циклотронных (ЭМИЦ) волн и питч-угловая диффузия протонов, что приводит к заполнению конуса потерь и, следовательно, к высыпанию энергичных протонов. ЭМИЦ волны, н

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49

Kucharek, H., M. Scholder, and A. P. Matthews. "Three-dimensional simulation of the electromagnetic ion/ion beam instability: cross field diffusion." Nonlinear Processes in Geophysics 7, no. 3/4 (2000): 167–72. http://dx.doi.org/10.5194/npg-7-167-2000.

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Abstract. In a system with at least one ignorable spatial dimension charged particles moving in fluctuating fields are tied to the magnetic field lines. Thus, in one-and two-dimensional simulations cross-field diffusion is inhibited and important physics may be lost. We have investigated cross-field diffusion in self-consistent 3-D magnetic turbulence by fully 3-dimensional hybrid simulation (macro-particle ions, massless electron fluid). The turbulence is generated by the electromagnetic ion/ion beam instability. A cold, low density, ion beam with a high velocity stream relative to the backgr

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Newton, Rosie, Mike J. Scott та Malcolm J. Joyce. "Investigating Artefacts and Repair Mechanisms Associated with α-particle Interactions in Charge Coupled Devices". EPJ Web of Conferences 225 (2020): 01010. http://dx.doi.org/10.1051/epjconf/202022501010.

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Charge coupled devices (CCDs) have been shown to have potential for detecting charged particles and other forms of ionising radiation. In particular, the clusters in the pixel images produced are distinctive for α and β radiations, with α particles causing large, symmetrical clusters or long, vertical tracks often referred to as blooming, and β particles causing long, curved tracks. The size and shape of these tracks are also related to the energy of the incident radiation, giving the potential for spectroscopy of these types of radiation. This could be used, for example, to realise a hand-hel

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