Plasma Physics Reports最新文献_第4页

Nonlinear Dust-Acoustic Perturbations in the Vicinity of Comets 彗星附近的非线性尘埃声扰动

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-09-14 DOI: 10.1134/S1063780X26600945

Yu. S. Reznichenko, A. Yu. Dubinskii, S. I. Popel

引用次数: 0

Breakdown Development in a Pseudospark Switch with an External Trigger System Based on a Pulsed Discharge over the Surface of a Semiconductor 基于半导体表面脉冲放电的带外部触发系统的伪火花开关击穿发展

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600799

Y. D. Korolev, N. V. Landl, O. B. Frants, A. V. Bolotov, V. O. Nekhoroshev

{"title":"Breakdown Development in a Pseudospark Switch with an External Trigger System Based on a Pulsed Discharge over the Surface of a Semiconductor","authors":"Y. D. Korolev, N. V. Landl, O. B. Frants, A. V. Bolotov, V. O. Nekhoroshev","doi":"10.1134/S1063780X26600799","DOIUrl":"10.1134/S1063780X26600799","url":null,"abstract":"A pseudospark switch with a trigger unit based on a pulsed surface discharge is investigated. The trigger system includes a semiconductor cylinder, on the surface of which there are two spring contacts. Initiation of a discharge in the high-voltage gap occurs when a trigger pulse at a level of up to 8 kV is applied to the cathode electrode. When a trigger pulse is applied, a cathode spot plasma forms in a wide range of gas (hydrogen) pressures up to atmospheric. To trigger the switch, it is necessary for the trigger discharge current to be intercepted to the grounded hollow cathode of the high-voltage gap. At low gas pressure (0.1 Torr or less), a discharge develops over the surface due to the trigger pulse, but current is not intercepted to the grounded cathode cavity. When the gas pressure increases to the working level (at a level of about 0.5 Torr), plasma is generated in the cathode cavity, which causes the external triggering of the device. The breakdown delay time relative to the instant of arrival of the trigger pulse includes the time of current interception in the cathode cavity and the time of initiation of the discharge in the main gap. It lies within the range of 55–70 ns, and its jitter for the considered trigger method does not exceed 10 ns.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"890 - 898"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751981","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

An Estimate of the Absolute Measurement Error of the Electric Potential in Plasma of the T-15MD Tokamak T-15MD托卡马克等离子体电势绝对测量误差的估计

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600854

L. G. Eliseev, E. A. Vinitskiy, A. V. Melnikov, Ya. M. Ammosov, G. A. Sarancha, N. A. Vadimov

{"title":"An Estimate of the Absolute Measurement Error of the Electric Potential in Plasma of the T-15MD Tokamak","authors":"L. G. Eliseev, E. A. Vinitskiy, A. V. Melnikov, Ya. M. Ammosov, G. A. Sarancha, N. A. Vadimov","doi":"10.1134/S1063780X26600854","DOIUrl":"10.1134/S1063780X26600854","url":null,"abstract":"An absolute error in measuring the plasma electric potential using the heavy ion beam probe (HIBP) is estimated for the T-15MD tokamak. The main sources of error are analyzed, including the instability of voltage and the inaccuracy of its setting in the high-voltage power supplies of the accelerator and the energy analyzer, the uncertainty in the entrance angle of the secondary ion beam into the analyzer, the noise in the measurement path and the shot noise. The error is calculated for various modes of tokamak operation with the toroidal magnetic field of BТ = 1.2–2.0 T and the chord-averaged electron density of ne = (3–5) × 1019 m–3 for different profiles of electron temperature and density. The radial plasma regions accessible to reliable potential measurement are determined. Two-dimensional distributions of the absolute error for both the average potential and its fluctuations are obtained. It is demonstrated that optimizing the analyzer plate voltage, which reduces the normalized difference in partial currents at the detector, reduces the overall measurement error by approximately a factor of four and substantially expands the sample volume.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"786 - 801"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752329","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

Effects of Non-Maxwellian Particle Distributions on Ion-Acoustic Waves in a Magnetized Cometary-Like Multi-Ion Plasma 非麦克斯韦粒子分布对磁化类彗星多离子等离子体中离子声波的影响

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600489

K. Jiang, S.-M. Lin, X.-Q. Wang, L. Wei, D.-N. Gao

{"title":"Effects of Non-Maxwellian Particle Distributions on Ion-Acoustic Waves in a Magnetized Cometary-Like Multi-Ion Plasma","authors":"K. Jiang, S.-M. Lin, X.-Q. Wang, L. Wei, D.-N. Gao","doi":"10.1134/S1063780X26600489","DOIUrl":"10.1134/S1063780X26600489","url":null,"abstract":"This study investigates nonlinear ion-acoustic waves (IAWs) in a magnetized multi-ion plasma motivated by cometary plasma environments, where hydrogen ions, oxygen ions, and non-Maxwellian electron populations may coexist due to solar-wind interaction and particle acceleration processes. The distribution is adopted here as an effective model for electrons with superthermal tails, rather than as a universal description of all cometary electron populations. Two scenarios are analyzed: (1) oxygen ions follow Cairns–Tsallis distributions (CTD) while hydrogen ions behave as isothermal fluids, and (2) hydrogen ions adopt CTD while oxygen ions are governed by fluid dynamics. Using 3D fluid equations, reductive perturbation theory (RPT) and samll (k) perturbation expansion, we derive Zakharov–Kuznetsov (ZK) equations to describe nonlinear IAWs and their three-dimensional instability (TMI). Results reveal that wave features-such as phase speed, amplitude, width and instability growth rates depend critically on nonthermal electron parameter, nonextensivity, magnetic field orientation and basic plasma parameters. Notably, instability arises when specific threshold conditions are met, with growth rates sensitive to wave propagation angles. These findings deepen our understanding of wave dynamics in cometary and other space plasmas with non-Maxwellian components.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"862 - 873"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751997","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

Diagnostics of the Effective Ion Charge Using Measurements of the Bremsstrahlung in the T-15MD Plasma by Toroidal Equatorial Observation Chords 用环向赤道观测弦测量T-15MD等离子体轫致辐射诊断有效离子电荷

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X2660057X

E. D. Butorin, V. A. Krupin, A. R. Nemets, I. A. Zemtsov, V. V. Baturin, S. D. Suntsov

引用次数: 0

Development of a Post-Dielectric Barrier Discharge Plasma Reactor for the Treatment of Simulated Dye Wastewater 介质后阻挡放电等离子体反应器处理模拟染料废水的研究

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600386

M. Choudhary, V. Dudeja, S. Kant

{"title":"Development of a Post-Dielectric Barrier Discharge Plasma Reactor for the Treatment of Simulated Dye Wastewater","authors":"M. Choudhary, V. Dudeja, S. Kant","doi":"10.1134/S1063780X26600386","DOIUrl":"10.1134/S1063780X26600386","url":null,"abstract":"The potential application of non-thermal plasma in treating textile industrial wastewater motivates researchers to develop innovative techniques at a laboratory scale to achieve the goal of wastewater mineralization. With this objective, a post-dielectric barrier discharge (DBD) plasma reactor with a liquid electrode has been developed to study the degradation of synthetic dye solutions (simulated dye wastewater) at the laboratory scale. The in-house-developed post-DBD plasma reactor is used to assess its applicability for degrading Crystal Violet and other azo dyes in aqueous solution (model wastewater samples). We investigated the roles of solution and reactor parameters in achieving a higher degradation efficiency of Crystal Violet under the given discharge conditions. The reaction kinetics of Crystal Violet degradation were studied by analyzing UV-Vis spectra at different treatment times. The primary results suggest that the proposed post-DBD plasma reactor may offer a more promising solution than a simple DBD plasma reactor for degrading synthetic dyes and organic matter in industrial wastewater.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"874 - 889"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751983","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

Optical Emission Spectroscopy Based Diagnosis in He/N2 RF Plasmas under Different Gas Pressures and Powers 不同气体压力和功率下He/N2射频等离子体的发射光谱诊断

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600416

Z. T. Wang, L. S. A, Z. S. Yang, A. Q. Li, F. Huang, Z. Y. Chen

{"title":"Optical Emission Spectroscopy Based Diagnosis in He/N2 RF Plasmas under Different Gas Pressures and Powers","authors":"Z. T. Wang, L. S. A, Z. S. Yang, A. Q. Li, F. Huang, Z. Y. Chen","doi":"10.1134/S1063780X26600416","DOIUrl":"10.1134/S1063780X26600416","url":null,"abstract":"He/N2 discharge characteristics were investigated through optical emission spectroscopy (OES) in a capacitively coupled radio frequency discharge plasma. The evolution processes of characterized spectral line intensities, effective excitation temperature, electron energy distribution function (EEDF), electron density and the density of ({text{N}}_2^ + ) as gas pressure and RF power were analyzed. The results show that increasing gas pressure leads to enhanced collisional cooling, which results in the decrease of effective excitation temperature derived from the He I Boltzmann plot, and the subsequent reduction in the population of helium metastable states. Consequently, the Penning ionization of N2 is inhibited, leading to a decrease in electron density. While increasing RF power significantly enhances ({text{N}}_2^ + ) production through both direct ionization and helium metastable-assisted Penning ionization. The bi-Maxwellian model with a low-energy bulk group and a high-energy tail group was employed to express the overall EEDF characteristics. Compared with typical molecular plasmas, the He/N2 system demonstrates the superior energetic electron sustainability and stronger generation of reactive nitrogen ions. These findings provide valuable guidance for the optimization of plasma-assisted nitriding, dry etching, and other nitrogen-related surface engineering processes.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"924 - 933"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751984","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 the Possibility of Anomalous Power Absorption in Experiments On-Axis X2-Mode Electron Cyclotron Resonance Heating at the TJ-II Stellarator TJ-II仿星器轴向x2模式电子回旋共振加热实验中异常功率吸收的可能性

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600714

E. Z. Gusakov, A. Yu. Popov, A. V. Melnikov, L. G. Eliseev

{"title":"On the Possibility of Anomalous Power Absorption in Experiments On-Axis X2-Mode Electron Cyclotron Resonance Heating at the TJ-II Stellarator","authors":"E. Z. Gusakov, A. Yu. Popov, A. V. Melnikov, L. G. Eliseev","doi":"10.1134/S1063780X26600714","DOIUrl":"10.1134/S1063780X26600714","url":null,"abstract":"An explanation of the dependence of the efficiency of electron cyclotron resonance heating (ECRH) on chord-average plasma density discovered during the analysis of experiments on-axis ECRH in the TJ-II stellarator is proposed. It is shown that the effect of decreasing heating efficiency with decreasing density can result from the excitation of a two-plasmon parametric decay instability (PDI) of the extraordinary microwave. The decay of the microwave (pump wave) occurs in two spatially close points as a result of the development of an absolute PDI leading to the excitation of electron Bernstein (EB) waves at frequencies close to half the frequency of the pump wave. The saturation of the instability is caused by secondary decays of the primary EB waves followed by the excitation of daughter wave pairs consisting of an EB and a slow lower hybrid (SLH) wave. The power deposition region of the daughter waves can differ substantially from that of the pump wave, which can explain the discovered discrepancy between the efficiency of ECR power absorption and the predictions of the standard linear theory. The daughter SLH waves, after linear transformation into ion Bernstein (IB) waves, can interact effectively with the ion component, which allows for a qualitative explanation of the appearance of superthermal ions discovered at the TJ-II installation during the ECRH.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"819 - 829"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752332","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

Globus-3 Project with a “Warm” Electromagnetic System: Scenarios of the Long-Term Plasma Discharge at Ip = 2 MA, BT = 2 T “暖”电磁系统Globus-3项目：Ip = 2ma, BT = 2t的长期等离子体放电情景

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X26600611

N. N. Bakharev, E. N. Bondarchuk, V. I. Varfolomeev, A. A. Voronova, S. A. Grigor’ev, A. D. Grosheva, A. A. Kavin, I. V. Kedrov, A. Yu. Konin, G. S. Kurskiev, V. B. Minaev, A. B. Mineev, Yu. V. Petrov, N. V. Sakharov, V. N. Tanchuk, V. A. Trofimov

{"title":"Globus-3 Project with a “Warm” Electromagnetic System: Scenarios of the Long-Term Plasma Discharge at Ip = 2 MA, BT = 2 T","authors":"N. N. Bakharev, E. N. Bondarchuk, V. I. Varfolomeev, A. A. Voronova, S. A. Grigor’ev, A. D. Grosheva, A. A. Kavin, I. V. Kedrov, A. Yu. Konin, G. S. Kurskiev, V. B. Minaev, A. B. Mineev, Yu. V. Petrov, N. V. Sakharov, V. N. Tanchuk, V. A. Trofimov","doi":"10.1134/S1063780X26600611","DOIUrl":"10.1134/S1063780X26600611","url":null,"abstract":"A concept of the Globus-3 spherical tokamak with a “warm” copper electromagnetic system, developed jointly by employees of the JSC NIIEFA and the Ioffe Institute, is presented. By increasing the facility parameters to a plasma current of 2 MA, a toroidal magnetic field of 2 T, and an aspect ratio of 1.8, the expected ion temperature can reach thermonuclear values, which opens up prospects for studying the behavior of charged fusion products, including alpha particles. Using the iterative process, the major and minor plasma radii and the parameters of the poloidal magnetic system of the facility have been determined, allowing for achieving the required discharge plateau duration of up to 3 s. The plasma discharge scenarios are simulated. The choice of scenario parameters is based on data obtained during experiments on the Globus-M2 tokamak, as well as on calculations using the GLOBSYS code. The design variant proposed at this stage is recognized as the most preferable for the implementation of the Globus-3 facility with a copper electromagnetic system in the available experimental building of the Ioffe Institute.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 7","pages":"769 - 777"},"PeriodicalIF":1.0,"publicationDate":"2026-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752326","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 Electrostatic Turbulence of Edge Plasma under Electron Cyclotron Resonance Heating in NCST NCST中电子回旋共振加热下边缘等离子体的静电湍流

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-08-15 DOI: 10.1134/S1063780X25604535

D. Xiao, S. Liu, X. Chen, H. Chen, H. Chen, Y. Xiong, F. Huang

引用次数: 0