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Numerical Model of Nonstationary Plasma in Axially Symmetrical Open Trap MIDAS-1D2V 轴对称开阱MIDAS-1D2V中非稳态等离子体的数值模型
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-30 DOI: 10.1134/S1063780X25602688
V. V. Prikhodko
{"title":"Numerical Model of Nonstationary Plasma in Axially Symmetrical Open Trap MIDAS-1D2V","authors":"V. V. Prikhodko","doi":"10.1134/S1063780X25602688","DOIUrl":"10.1134/S1063780X25602688","url":null,"abstract":"<p>A numerical model is constructed for calculating the evolution of the ion distribution function in an axially symmetric open trap. A single force tube with uniform distribution of parameters over the cross section is considered. The phase space is parameterized by the total energy and magnetic moment. The Rosenbluth–Trubnikov potentials are calculated from the distribution functions averaged over angles. A Maxwellian distribution of electrons with the same temperature is assumed throughout the computational domain.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 4","pages":"414 - 426"},"PeriodicalIF":1.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170608","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
Facility for Studying the Interaction of Plasma with Materials Based on a Helicon-Type RF Source: First Results 螺旋型射频源等离子体与材料相互作用研究装置：初步成果
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-30 DOI: 10.1134/S1063780X25602664
N. O. Stepanov, D. I. Cherkez, A. V. Spitsyn
{"title":"Facility for Studying the Interaction of Plasma with Materials Based on a Helicon-Type RF Source: First Results","authors":"N. O. Stepanov,&nbsp;D. I. Cherkez,&nbsp;A. V. Spitsyn","doi":"10.1134/S1063780X25602664","DOIUrl":"10.1134/S1063780X25602664","url":null,"abstract":"<p>The results of one of the first experimental campaigns on the experimental stand GPI-2 (helicon plasma source, 2 kW) on studying the plasma material interaction, which is designed and manufactured at the National Research Center “Kurchatov Institute”, are presented. Plasma parameters have been measured using a set of probe diagnostics. The optimal magnetic field values and working gas flow rates for this stand configuration are selected based on the experimental data, and the possibility of obtaining plasma with a density of about 10<sup>11</sup> cm<sup>–3</sup> is demonstrated. The effect of the RF antenna position in a decreasing magnetic field relative to its maximum has been studied.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 4","pages":"474 - 483"},"PeriodicalIF":1.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170610","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
Surface Recombination of H Atoms on Pyrex in Medium-Pressure Hydrogen Plasma 中压氢等离子体中高温热石中H原子的表面复合
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-30 DOI: 10.1134/S1063780X25602822
I. I. Ziganshin, K. R. Galiullin, D. V. Lopaev, E. A. Kirillov, A. T. Rakhimov
{"title":"Surface Recombination of H Atoms on Pyrex in Medium-Pressure Hydrogen Plasma","authors":"I. I. Ziganshin,&nbsp;K. R. Galiullin,&nbsp;D. V. Lopaev,&nbsp;E. A. Kirillov,&nbsp;A. T. Rakhimov","doi":"10.1134/S1063780X25602822","DOIUrl":"10.1134/S1063780X25602822","url":null,"abstract":"<p>The probability of heterogeneous recombination of hydrogen atoms, γ<sub>H</sub>, on the surface of a Pyrex tube in a direct current glow discharge in pure hydrogen at medium pressure (2–7 Torr) has been measured as a function of the discharge pressure and current for two wall temperatures. It has been found that the recombination probability does not depend on the discharge pressure and current under the condition of preliminary training of the tube in a hydrogen discharge. The γ<sub>H</sub> value decreases during the tube training with a characteristic time of reaching a steady-state value of ~30 min. Analysis of a possible recombination mechanism using quantum chemical methods shows that the recombination of hydrogen atoms on the Pyrex surface is associated with OH radicals and oxygen vacancies on the surface, and the dynamics of γ<sub>H</sub> can be explained by the decay of surface OH radicals during tube training.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 4","pages":"504 - 512"},"PeriodicalIF":1.1,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171716","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
Operational Range, Limitations, and the Expected Signal-to-Noise Ratio for the “Reflectometry for the Electron Density Profile Measurements” Diagnostics for the T-15MD Tokamak T-15MD托卡马克“电子密度剖面测量反射法”诊断的工作范围、限制和预期信噪比
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X24602244
D. A. Shelukhin, V. A. Vershkov, V. V. Lukyanov, D. S. Molchanov, N. A. Soloviev, I. V. Vladimirov, A. A. Loginov
{"title":"Operational Range, Limitations, and the Expected Signal-to-Noise Ratio for the “Reflectometry for the Electron Density Profile Measurements” Diagnostics for the T-15MD Tokamak","authors":"D. A. Shelukhin,&nbsp;V. A. Vershkov,&nbsp;V. V. Lukyanov,&nbsp;D. S. Molchanov,&nbsp;N. A. Soloviev,&nbsp;I. V. Vladimirov,&nbsp;A. A. Loginov","doi":"10.1134/S1063780X24602244","DOIUrl":"10.1134/S1063780X24602244","url":null,"abstract":"<p>An estimate was made of the operational and measurement range for the “Reflectometry for the Electron Density Profile Measurements” diagnostics that is being developed for the T-15MD device. The latest changes related to the design of the diagnostics are discussed, parameters of the diagnostics components are presented, and the expected signal-to-noise ratio is given. Also, an assessment of the maximum tolerable level of density fluctuations for diagnostics is presented and compared with measurement results obtained on the other devices. This study is of interest for professionals who develop microwave diagnostics for fusion machines.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"231 - 253"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165810","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
Second-Order Multigroup Model for Calculating Low-Energy Electron Transport in Weakly Ionized Gases 计算弱电离气体中低能电子输运的二阶多群模型
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X25602354
E. I. Bochkov
{"title":"Second-Order Multigroup Model for Calculating Low-Energy Electron Transport in Weakly Ionized Gases","authors":"E. I. Bochkov","doi":"10.1134/S1063780X25602354","DOIUrl":"10.1134/S1063780X25602354","url":null,"abstract":"<p>Proceeding from the Boltzmann kinetic equation for electrons, the system of multigroup equations for the zeroth, first and second moments of the electron distribution function is derived. The system includes equations for the balance of concentration, flux density and momentum flux density of electrons, and it is intended for numerical simulations of transport and kinetics of low-energy electrons in weakly ionized cold plasmas. The results of numerical calculations of electron swarm development in a uniform electric field in neon according to the developed multigroup model are compared with the results obtained by the Monte Carlo method to demonstrate the accuracy of the proposed model.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"328 - 339"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165439","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
The Influence of the Working Gas Composition on the Mass-to-Charge Composition of Ions in the Beam Plasma during the Evaporation of an YSZ Target by an Electron Beam 电子束蒸发YSZ靶时工作气体组成对束流等离子体中离子质荷比组成的影响
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X25602494
A. V. Tyunkov, A. A. Andronov, D. B. Zolotukhin, T. O. Klimkin, A. K. Nesterenko, S. A. Salnikov, Yu. G. Yushkov
{"title":"The Influence of the Working Gas Composition on the Mass-to-Charge Composition of Ions in the Beam Plasma during the Evaporation of an YSZ Target by an Electron Beam","authors":"A. V. Tyunkov,&nbsp;A. A. Andronov,&nbsp;D. B. Zolotukhin,&nbsp;T. O. Klimkin,&nbsp;A. K. Nesterenko,&nbsp;S. A. Salnikov,&nbsp;Yu. G. Yushkov","doi":"10.1134/S1063780X25602494","DOIUrl":"10.1134/S1063780X25602494","url":null,"abstract":"<p>The paper presents the results of a study on the mass-to-charge composition of ions in the beam plasma generated during the evaporation of a solid-state ceramic target made of yttria-partially stabilized zirconia (YSZ) in an environment of inert and reactive gases by an electron beam in the forevacuum pressure range. Monitoring of the mass-to-charge composition of beam plasma ions was carried out using a modernized RGA-300 residual atmosphere mass analyzer. The influence of the working gas composition on the mass spectra of ions of the evaporated target material is shown.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"374 - 378"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165803","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 the Electrode Immersion Depth on the Development of Pre-Breakdown Flows in Distilled Water 电极浸泡深度对蒸馏水中预击穿流动发展的影响
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X25602500
V. A. Panov, A. S. Saveliev, Yu. M. Kulikov
{"title":"Effect of the Electrode Immersion Depth on the Development of Pre-Breakdown Flows in Distilled Water","authors":"V. A. Panov,&nbsp;A. S. Saveliev,&nbsp;Yu. M. Kulikov","doi":"10.1134/S1063780X25602500","DOIUrl":"10.1134/S1063780X25602500","url":null,"abstract":"<p>An experimental and numerical study of the velocity field in distilled water occurring at the pre-breakdown stage when a voltage pulse is applied to the electrode-needle at different immersion depths has been carried out. The results obtained are analyzed in terms of the extremum (maximum) of the flow velocity achieved in the observation area in the immediate vicinity of the high-voltage electrode. Satisfactory agreement between the experimental and numerical time dependences of the velocity extremum and the calculation is obtained. It is shown that the maximum velocity in the emerging flow is achieved at later times with increasing immersion depth. A decrease in the immersion depth leads to an electric discharge when the high-voltage electrode loses contact with water because of the flow occurring near it. The studies performed show the further direction of the development of the constructed physical and mathematical model.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"379 - 383"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166138","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
Coexistence of Compressive and Rarefactive Solitary Wave Structures in Magnetized Plasma with Kaniadakis Distributed Electrons and Stationary Charged Dust Grains 具有Kaniadakis分布电子和静止带电尘埃颗粒的磁化等离子体中压缩和稀薄孤波结构的共存
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X24601949
M. Rahman, S. N. Barman
{"title":"Coexistence of Compressive and Rarefactive Solitary Wave Structures in Magnetized Plasma with Kaniadakis Distributed Electrons and Stationary Charged Dust Grains","authors":"M. Rahman,&nbsp;S. N. Barman","doi":"10.1134/S1063780X24601949","DOIUrl":"10.1134/S1063780X24601949","url":null,"abstract":"<p>The present paper investigates the dynamical properties of dust-ion-acoustic (DIA) solitary waves propagating obliquely to an external magnetic field in a three-component plasma system containing positive inertial ions, inertialess electrons, and negatively charged stationary dust grains. The electrons are assumed to obey the Kaniadakis distribution as governed by the deformation index <span>(kappa )</span>, which varies between <span>( - 0.4)</span> and <span>(0.4)</span>. Applying the appropriate reductive perturbation method, the Korteweg–de Vries (KdV) and modified KdV equations are derived, and their soliton solutions are numerically investigated. The influences of ion temperature, obliqueness angle, dust concentration, external magnetic field, and <span>(kappa )</span>-deformed parameter on the propagation properties such as amplitude, speed, and width of DIA solitary structure are analysed in detail. It is observed that there can be both compressive and rarefactive DIA solitary structures admitted by the KdV equation due to the variation of dust concentration. As to the mKdV equation, which is valid only in a specific dust concentration, it permits the coexistence of compressive and rarefactive DIA solitary structures with finite amplitude in the plasma. The implication of the outcomes of this investigation may be admissible for understanding the behaviour of nonlinear electrostatic localized waves in space and astrophysical dusty plasma environments.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"315 - 327"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165805","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
Radiation of a Short High-Current Vacuum Arc with Copper Electrodes 铜电极短电流真空电弧的辐射
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X25602482
Yu. A. Barinov, K. K. Zabello, A. A. Logachev, I. N. Poluyanova, S. M. Shkol’nik
{"title":"Radiation of a Short High-Current Vacuum Arc with Copper Electrodes","authors":"Yu. A. Barinov,&nbsp;K. K. Zabello,&nbsp;A. A. Logachev,&nbsp;I. N. Poluyanova,&nbsp;S. M. Shkol’nik","doi":"10.1134/S1063780X25602482","DOIUrl":"10.1134/S1063780X25602482","url":null,"abstract":"<p>The radiation power of a high-current vacuum arc burning on copper electrodes has been measured. The radiation measurement range has been 100 nm ≤ λ ≤ 1100 nm. The developed measurement technique has made it possible to analyze the change in the radiation power depending on the arc current in the visible and ultraviolet parts of the spectrum, as well as in the vacuum ultraviolet region. The analysis of the obtained results indicates that the radiation power spectrum is redistributed in a vacuum arc with a strong anodic activity. The obtained results make it possible to estimate the fraction of radiation in the arc energy balance.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"365 - 368"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166135","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
Radiation of Atoms and Ions of Metals in the Plasma-Chemical Process Initiated by the Radiation of a Powerful Pulsed Gyrotron in Mixtures of Magnesium and Titanium Oxide Powders 强脉冲回旋管辐射引发金属原子和离子在氧化镁和钛混合粉末中的等离子体化学过程
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2025-07-16 DOI: 10.1134/S1063780X25602536
A. V. Knyazev, A. A. Letunov, V. P. Logvinenko, E. V. Voronova, V. D. Borzosekov, V. D. Stepakhin, A. S. Sokolov, A. K. Kozak, V. A. Ivanov, N. N. Skvortsova
{"title":"Radiation of Atoms and Ions of Metals in the Plasma-Chemical Process Initiated by the Radiation of a Powerful Pulsed Gyrotron in Mixtures of Magnesium and Titanium Oxide Powders","authors":"A. V. Knyazev,&nbsp;A. A. Letunov,&nbsp;V. P. Logvinenko,&nbsp;E. V. Voronova,&nbsp;V. D. Borzosekov,&nbsp;V. D. Stepakhin,&nbsp;A. S. Sokolov,&nbsp;A. K. Kozak,&nbsp;V. A. Ivanov,&nbsp;N. N. Skvortsova","doi":"10.1134/S1063780X25602536","DOIUrl":"10.1134/S1063780X25602536","url":null,"abstract":"<p>Results of spectroscopic measurements of the plasma radiation in microwave discharges in experiments on the synthesis of micro- and nanosized catalytic structures under the action of powerful microwave radiation pulses produced by a gyrotron (the wavelength of 4 mm, the pulse duration of 2–8 ms, and the power of up to 500 kW) on the mixture of magnesium Mg and titanium oxide TiO<sub>2</sub> powders have been presented. The experiments have been carried out in air. The radiation spectra of the microwave discharges have been recorded by a set of AvaSpec spectrometers of different types in the wavelength range from 219 to 920 nm. Spectral lines of neutral atoms and singly ionized ions of magnesium and titanium were recorded. The characteristics of the spectral lines are studied during the interaction of the microwave radiation pulse with the powder mixture and after its termination. The analysis of the obtained results shows that for titanium atoms, the condition of the local thermodynamic equilibrium (LTE) is fulfilled, which allows one to make reliable estimates of the electron temperature of the plasma, which varies from 0.2 to 0.4 eV. At the same time, for titanium ions, the LTE condition is not fulfilled in the microwave discharge. The comparable intensities of the atomic and ionic titanium lines in the discharges at the electron temperature of 0.2–0.4 eV, which is more than one order of magnitude lower than the ionization potential of titan, indicate that the plasma of the microwave discharge in the powder mixture is strongly inhomogeneous. The bands of titanium monoxide TiO recorded in the radiation of the microwave discharge indicate that plasma-chemical reactions occur in the discharge.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 3","pages":"384 - 395"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166137","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
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