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Electric Field on the Surface of a Metal Electrode Immersed in Plasma at a High Negative Potential 浸没在高负电位等离子体中的金属电极表面的电场
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601365
V. A. Ivanov
{"title":"Electric Field on the Surface of a Metal Electrode Immersed in Plasma at a High Negative Potential","authors":"V. A. Ivanov","doi":"10.1134/S1063780X22601365","DOIUrl":"10.1134/S1063780X22601365","url":null,"abstract":"<p>An analytical solution of the Poisson’s equation is found for the electric field on the surface of the electrode immersed in a homogeneous non-isothermal collisionless plasma consisting of electrons and single-charged ions with charge <i>e</i>, with electron temperature <i>T</i><sub><i>e</i></sub> and high values of negative electric potential Ψ when the parameter |<i>e</i>Ψ|/<i>T</i><sub><i>e</i></sub> ≫ 1. It is found that the plasma layer <i>L</i> with violated quasi neutrality near the high-potential electrode increases compared to the Debye length <i>r</i><sub>D</sub> proportionally to the parameter [<i>e</i>Ψ/2<i>T</i><sub><i>e</i></sub>]<sup>3/4</sup>, as <i>L</i> = <i>r</i><sub>D</sub>[<i>e</i>Ψ/2<i>T</i><sub><i>e</i></sub>]<sup>3/4</sup>. The electric field was calculated on the surface of the negative electrode in plasma. It is shown that in a laboratory plasma with density in the range 10<sup>10</sup>–10<sup>13</sup> cm<sup>–3</sup> and electron temperature from 1 to 10 eV, at high potential for the parameter <i>e</i>Ψ/<i>T</i><sub><i>e</i></sub> ≫ 1, the electric field calculated by the obtained formula <i>E</i> = Ψ/<i>L</i> near the surface of the electrode up to 200 times lower than the fields calculated by the classical formula <i>E</i> = Ψ/<i>r</i><sub>D</sub>, which was obtained at low potential and for the parameter <i>e</i>Ψ/<i>T</i><sub><i>e</i></sub> ≪ 1.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"284 - 289"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4670050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Stationary Flow of Dense Plasma under Localized Energy Deposition 局部能量沉积下致密等离子体的稳态流动
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601596
I. S. Abramov, E. D. Gospodchikov, A. G. Shalashov
{"title":"On Stationary Flow of Dense Plasma under Localized Energy Deposition","authors":"I. S. Abramov,&nbsp;E. D. Gospodchikov,&nbsp;A. G. Shalashov","doi":"10.1134/S1063780X22601596","DOIUrl":"10.1134/S1063780X22601596","url":null,"abstract":"<p>The paper presents a one-dimensional gas-dynamic model that gives an opportunity to establish the necessary conditions for the emergence and determine characteristics of a stationary flow of a compressible continuous medium with nonlinear thermal conductivity, an example of which is a fully or partially ionized plasma, in the presence of a localized heat source with a given power.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"209 - 218"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X22601596.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4669931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theoretical Study of the Poloidal Correlation Reflectometry in the Linear Scattering Regime 线性散射条件下极向相关反射计的理论研究
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22602024
O. L. Krutkin, E. Z. Gusakov
{"title":"Theoretical Study of the Poloidal Correlation Reflectometry in the Linear Scattering Regime","authors":"O. L. Krutkin,&nbsp;E. Z. Gusakov","doi":"10.1134/S1063780X22602024","DOIUrl":"10.1134/S1063780X22602024","url":null,"abstract":"<p>Poloidal correlation reflectometry (PCR) diagnostic is studied within linear analytical theory. The emphasis is given to the comparison of the two different antenna configurations possessing translational and mirror symmetry. Analytical expressions for measured quantities are obtained and the qualitative equivalence of the two configurations is proven in linear regime. Results of the theoretical analysis are confirmed with linear numerical modelling.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"239 - 244"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4668190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First Experiments on the Investigation of the Generation of Negative Hydrogen Ions with the Use of CW ECR Discharge at the GISMO Facility 在GISMO装置上研究连续波ECR放电产生负氢离子的首次实验
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X2260147X
R. L. Lapin, V. A. Skalyga, I. V. Izotov, S. V. Golubev, A. F. Bokhanov, E. M. Kiseleva, S. S. Vybin
{"title":"First Experiments on the Investigation of the Generation of Negative Hydrogen Ions with the Use of CW ECR Discharge at the GISMO Facility","authors":"R. L. Lapin,&nbsp;V. A. Skalyga,&nbsp;I. V. Izotov,&nbsp;S. V. Golubev,&nbsp;A. F. Bokhanov,&nbsp;E. M. Kiseleva,&nbsp;S. S. Vybin","doi":"10.1134/S1063780X2260147X","DOIUrl":"10.1134/S1063780X2260147X","url":null,"abstract":"<p>The results of the first experiments on studying the volume production of negative hydrogen ions using a dense gasdynamic plasma of an electron cyclotron resonance (ECR) discharge sustained by continuous wave (CW) microwave radiation from a gyrotron (28 GHz/5 kW) are described. The ECR hydrogen discharge is ignited in a vacuum chamber placed in a magnetic field created by a system of two consecutive magnetic traps. The system parameters are optimized to obtain the maximum average current density of negative ions at the level of <i>j</i> = 25 mA/cm<sup>2</sup>. The study involves the determination of the negative ion production area, me-asurement of the current density dependences on gas pressure and microwave radiation power, and demonstration of potential optimization opportunities for extraction voltage.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"272 - 276"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4670057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advanced Quasistatic Approximation 高级准静态近似
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601249
P. V. Tuev, R. I. Spitsyn, K. V. Lotov
{"title":"Advanced Quasistatic Approximation","authors":"P. V. Tuev,&nbsp;R. I. Spitsyn,&nbsp;K. V. Lotov","doi":"10.1134/S1063780X22601249","DOIUrl":"10.1134/S1063780X22601249","url":null,"abstract":"<p>The quasistatic approximation (QSA) is an efficient method of simulating laser- and beam-driven plasma wakefield acceleration, but it becomes imprecise if some plasma particles make long longitudinal excursions in a strongly nonlinear wave, or if waves with non-zero group velocity are present in the plasma, or the plasma density gradients are sharp, or the beam shape changes rapidly. We present an extension to QSA that is free from many of its limitations and retains its main advantages of speed and reduced dimensionality. The new approach takes into account the exchange of information between adjacent plasma layers. We introduce the physical model, describe its numerical implementation, and compare the simulation results with available analytical solutions and other codes.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"229 - 238"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4670052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave Low-Pressure Gas Discharge Sustained by a Standing Surface Wave in the Dipolar Mode 偶极模式下驻面波持续的微波低压气体放电
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601651
V. I. Zhukov, D. M. Karfidov
{"title":"Microwave Low-Pressure Gas Discharge Sustained by a Standing Surface Wave in the Dipolar Mode","authors":"V. I. Zhukov,&nbsp;D. M. Karfidov","doi":"10.1134/S1063780X22601651","DOIUrl":"10.1134/S1063780X22601651","url":null,"abstract":"<p>The maintenance of a microwave gas discharge of a standing surface electromagnetic wave (SEW) in the dipolar mode is studied. The standing wave was formed between two flat mirrors that create an open resonator type structure on the surface wave. The measured <i>Q</i> factor of the open resonator is several tens. The electric field structures of a free discharge and a discharge supported by a standing surface wave field are determined. It is shown that resonance on a purely surface wave is excited in this system. With an increase in the field energy between the mirrors by 8–10 dB, the concentration of electrons increases by about 50%. The ratios of the surface wave field energies in the plasma and in the space surrounding the discharge both in the case of a free discharge and during resonance are estimated. The results of experiments and numerical simulations show that the structure of the discharge depends on the excited mode of steady-state SEWs.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"219 - 228"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4668274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics of Discharge Development in a Homogeneous DC Field Initiated by a Plasma Filament Created by a Femtosecond Laser Pulse 由飞秒激光脉冲产生的等离子体灯丝引发的均匀直流场中放电发展动力学
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601663
N. A. Bogatov, A. N. Stepanov
{"title":"Dynamics of Discharge Development in a Homogeneous DC Field Initiated by a Plasma Filament Created by a Femtosecond Laser Pulse","authors":"N. A. Bogatov,&nbsp;A. N. Stepanov","doi":"10.1134/S1063780X22601663","DOIUrl":"10.1134/S1063780X22601663","url":null,"abstract":"<p>Dynamics of a discharge in a constant quasi-homogeneous electric field initiated by a plasma filament created by a femtosecond laser pulse is studied experimentally. The time of development of the initiated discharge (the time delay of discharge onset relative to the laser pulse) is measured as a function of magnitude of the constant electric field in the plasma filament. The obtained experimental dependence is compared with the results of numerical simulations of the discharge in the filament.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"277 - 283"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4963675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Ionization on Void Formation in an RF Discharge under Microgravity Conditions 微重力条件下射频放电中电离对空洞形成的影响
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-04-17 DOI: 10.1134/S1063780X22601961
L. M. Vasilyak, S. P. Vetchinin, D. N. Polyakov
{"title":"Effect of Ionization on Void Formation in an RF Discharge under Microgravity Conditions","authors":"L. M. Vasilyak,&nbsp;S. P. Vetchinin,&nbsp;D. N. Polyakov","doi":"10.1134/S1063780X22601961","DOIUrl":"10.1134/S1063780X22601961","url":null,"abstract":"<p>An analysis of the formation of a void in the PK3 setup in dusty plasma with 3.4-μm-diameter melamine–formaldehyde particles—in an RF discharge in argon at a pressure of 12–50 Pa under microgravity conditions at the ISS is presented. The uniform state of the plasma can only be obtained at a voltage close to the discharge extinction voltage. The application of a low-frequency voltage of 20–50 Hz stabilizes the state of the dusty plasma and shifts the void formation threshold towards higher RF voltages. It is shown that the formation of a void is associated with non-local ionization of the plasma at the center of the discharge by fast electrons, which are heated in the near-electrode layers.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 2","pages":"290 - 295"},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4668181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Wake Formation in a Polarized Dusty Plasma 极化尘埃等离子体中的尾流形成
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-03-27 DOI: 10.1134/S1063780X22600839
M. V. Salnikov, G. I. Sukhinin, A. V. Fedoseev
{"title":"Wake Formation in a Polarized Dusty Plasma","authors":"M. V. Salnikov,&nbsp;G. I. Sukhinin,&nbsp;A. V. Fedoseev","doi":"10.1134/S1063780X22600839","DOIUrl":"10.1134/S1063780X22600839","url":null,"abstract":"<p>A self-consistent numerical model is presented in which a self-consistent spatial distribution of plasma potential is calculated near isolated dust particles whose shape represents an ellipsoid of revolution. In this model, self-consistent electric plasma potential is calculated with the help of Legendre polynomial expansion of a spatial space charge, while ion trajectories are calculated in the mean field approximation. This article demonstrates a large-scale study of self-consistent distributions of space charge density and plasma potential in the presence of an external electric field. The dependencies of “the ion cloud–dust particle” system on various dusty plasma parameters are calculated. The parameters are dust particles shapes and sizes, the external electrostatic field strength, and the ion mean free path. The dependencies of the dipole moment, wake local maximum, and position of the wake local maximum on these parameters are reduced to a simple analytical expression.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 1","pages":"41 - 48"},"PeriodicalIF":1.1,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5488552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Dusty Plasma under Conditions of Glow Discharge in Magnetic Field of up to 2.5 T 高达2.5 T磁场辉光放电条件下的尘埃等离子体
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-03-27 DOI: 10.1134/S1063780X22601523
E. S. Dzlieva, L. G. Dyachkov, V. Yu. Karasev, L. A. Novikov, S. I. Pavlov
{"title":"Dusty Plasma under Conditions of Glow Discharge in Magnetic Field of up to 2.5 T","authors":"E. S. Dzlieva,&nbsp;L. G. Dyachkov,&nbsp;V. Yu. Karasev,&nbsp;L. A. Novikov,&nbsp;S. I. Pavlov","doi":"10.1134/S1063780X22601523","DOIUrl":"10.1134/S1063780X22601523","url":null,"abstract":"<p>Under conditions of glow discharge in the strong magnetic field, three-dimensional dust structures were created in the He, Ne, and Ar working gases in three types of dust traps (in standing stratum, in the region of current channel narrowing, and in the region of nonuniform magnetic field). These structures are stable in the fields of the order of 2 T. In all traps, the rotation dynamics have been studied of horizontal (perpendicular to the magnetic field) cross sections of dust structures, their angular velocities has been measured, and the nonuniform angular velocity distributions in the dust structure volumes have been measured. For the first time, for the trap in the region of current channel narrowing, the data are presented in the range of magnetic inductions of up to 2.5 T. Such magnetic fields correspond to the Ne<sup>+</sup> ion magnetization parameter of approximately 2 and the ion cyclotron radius comparable to the shielding distance. In the fields higher than 1.5 T, the angular velocity of the structure rotation increased to 50 s<sup>–1</sup>, which is a record-breaking fast rotation of dusty plasma. For each of the traps under study, the geometrical features of the dust structures are described.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 1","pages":"10 - 14"},"PeriodicalIF":1.1,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5054194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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