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On a Possibility of Dusty Plasma Formation in the Ionosphere of Venus 金星电离层尘埃等离子体形成的可能性
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X26601240
A. Yu. Dubinskii, S. I. Popel, Yu. S. Reznichenko
{"title":"On a Possibility of Dusty Plasma Formation in the Ionosphere of Venus","authors":"A. Yu. Dubinskii,&nbsp;S. I. Popel,&nbsp;Yu. S. Reznichenko","doi":"10.1134/S1063780X26601240","DOIUrl":"10.1134/S1063780X26601240","url":null,"abstract":"<p>Dusty plasma clouds in the ionosphere of Venus are considered. It is shown that the conditions for their formation can be met in the altitude range from approximately 120 to 130 km. Equations of a model self-consistently describing dusty plasma structures in the ionosphere of Venus are presented. Based on the presented equations, the altitude distributions of the dust particles that make up the dust clouds are obtained. It turns out that the dust particles of the clouds in the ionosphere of Venus, as in the ionosphere of Mars, are dry ice (CO<sub>2</sub>) particles. However, the maximum particle sizes in the ionosphere of Venus are approximately an order of magnitude smaller than the corresponding particle sizes in the ionosphere of Mars. The charging of dust particles in the ionosphere of Venus during the sedimentation of a dusty plasma cloud leads to a noticeable disturbance of the charged component of the ionospheric plasma.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1160 - 1167"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149067995","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
Analytical Double-Wall Model of Sideways Wall Force 侧壁力解析双壁模型
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X2660101X
D. Abate, V. D. Pustovitov, L. Cordaro, V. Yanovskiy
{"title":"Analytical Double-Wall Model of Sideways Wall Force","authors":"D. Abate,&nbsp;V. D. Pustovitov,&nbsp;L. Cordaro,&nbsp;V. Yanovskiy","doi":"10.1134/S1063780X2660101X","DOIUrl":"10.1134/S1063780X2660101X","url":null,"abstract":"<p>A double-wall analytical model has been developed to describe sideways forces in toroidal devices. The formulation extends the single-wall approach by including the coupled response of two resistive walls. The model reproduces the magnitude and time evolution of the force measured in ultra-low-<span>(q)</span> RFX-mod discharges. Comparison of its predictions with experimental data shows that plasma–wall contact is important in amplifying the wall force. Application to RFX-mod and RFX-mod2 in the case of no plasma–wall contact highlights how the electromagnetic configuration of conducting structures strongly influences the sideways force. The double-wall model provides a consistent basis for predicting and interpreting experimental observations and is directly relevant for next-generation fusion devices, where multiple conducting structures and plasma–wall interaction must be incorporated to ensure reliable prediction and safe management of sideways forces.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1109 - 1120"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068017","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 Noise in the Langmuir-Probe I–V Characteristics on the Dynamic and Energy Ranges of the Reconstructed Electron Energy Distribution Function langmuir探针I-V特性中噪声对重构电子能量分布函数动态范围和能量范围的影响
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X26601367
A. V. Bernatskiy, I. I. Draganov, N. A. Dyatko, I. V. Kochetov, V. V. Lagunov, V. N. Ochkin
{"title":"The Influence of Noise in the Langmuir-Probe I–V Characteristics on the Dynamic and Energy Ranges of the Reconstructed Electron Energy Distribution Function","authors":"A. V. Bernatskiy,&nbsp;I. I. Draganov,&nbsp;N. A. Dyatko,&nbsp;I. V. Kochetov,&nbsp;V. V. Lagunov,&nbsp;V. N. Ochkin","doi":"10.1134/S1063780X26601367","DOIUrl":"10.1134/S1063780X26601367","url":null,"abstract":"<p>The study examines the effect of noise in the current–voltage characteristic (IVC) of a Langmuir probe on the retrieved electron energy distribution function (EEDF). The investigation utilized a simulated IVC derived from distribution functions calculated using the Monte Carlo method on the axis of a hollow-cathode discharge in helium. The simulation incorporated an experimentally obtained plasma potential distribution. Noise of varying amplitudes was superimposed onto the model IVC, and the final distribution function was reconstructed from the noisy IVC using standard experimental processing techniques. Comparing the resulting EEDFs with the original calculated distribution functions established the reliable energy and dynamic ranges of the EEDF as a function of the added noise amplitude.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1231 - 1237"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149067904","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
Dust Ion Acoustic Waves Produced by the Interaction of a Comet’s Tail with the Zodiacal Cloud Plasma 彗尾与黄道云等离子体相互作用产生的尘埃离子声波
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X26601069
T. I. Morozova, S. I. Popel
{"title":"Dust Ion Acoustic Waves Produced by the Interaction of a Comet’s Tail with the Zodiacal Cloud Plasma","authors":"T. I. Morozova,&nbsp;S. I. Popel","doi":"10.1134/S1063780X26601069","DOIUrl":"10.1134/S1063780X26601069","url":null,"abstract":"<p>The interaction of the comet’s tail with the plasma of the zodiacal cloud has been studied. The possibility of excitation of dust ion acoustic waves has been considered. It has been shown that dust ion acoustic waves are excited because of the development of linear hydrodynamic instability. The processes of development of dust ion acoustic turbulence, which is considered from the standpoint of strong turbulence, have been investigated. The energy density of oscillations, the effective collision frequency, and the electric fields arising in the system have been determined. The obtained effective collision frequency should be considered when writing hydrodynamic equations for dusty plasma ions, taking into account its turbulent heating in the region of interaction of the comet’s tail with the plasma of the zodiacal cloud.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1168 - 1176"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149067994","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
Ion-Acoustic Solitary Waves and Their Stability Analysis in a Magnetized Plasma in the Presence of Trapped Hot and Cold Electrons 离子声孤波及其在被困冷热电子存在下磁化等离子体中的稳定性分析
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X26600660
S. Akter, S. Sultana, A. Mannan, A. A. Mamun
{"title":"Ion-Acoustic Solitary Waves and Their Stability Analysis in a Magnetized Plasma in the Presence of Trapped Hot and Cold Electrons","authors":"S. Akter,&nbsp;S. Sultana,&nbsp;A. Mannan,&nbsp;A. A. Mamun","doi":"10.1134/S1063780X26600660","DOIUrl":"10.1134/S1063780X26600660","url":null,"abstract":"<p>The work investigates the fundamental properties of obliquely propagating ion-acoustic solitary waves and their stability in a magnetized plasma medium containing inertial ions and inertialess kappa distributed trapped cold and hot electrons. The effects of oblique angle, external magnetic field, trapped parameters, kappa spectral index, charge state ratio between hot electrons and ions, temperature of ions to hot electrons and hot electrons to cold electrons on the fundamental characteristics (speed, width, etc.) of ion-acoustic solitary waves and their stability are examined. The solitary structures and associated electric field of ion acoustic waves via Sagdeev potential are also analyzed.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1208 - 1218"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149067998","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 Radial Plasma Density Distribution on the Characteristics of a Plasma Antenna 径向等离子体密度分布对等离子体天线特性的影响
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X26601252
N. N. Bogachev, V. P. Stepin, V. I. Zhukov, S. E. Andreev, I. L. Bogdankevich, S. P. Stepina, D. M. Karfidov, N. G. Gusein-zade
{"title":"Effect of the Radial Plasma Density Distribution on the Characteristics of a Plasma Antenna","authors":"N. N. Bogachev,&nbsp;V. P. Stepin,&nbsp;V. I. Zhukov,&nbsp;S. E. Andreev,&nbsp;I. L. Bogdankevich,&nbsp;S. P. Stepina,&nbsp;D. M. Karfidov,&nbsp;N. G. Gusein-zade","doi":"10.1134/S1063780X26601252","DOIUrl":"10.1134/S1063780X26601252","url":null,"abstract":"<p>The work presents the results of experimental and numerical studies of quarter-wave and wave-type plasma antennas based on a low-pressure microwave discharge sustained by a surface electromagnetic wave at a frequency of 445 MHz. The radial plasma density distributions in discharge tubes of various diameters and lengths, which determine the electromagnetic properties of the radiating structure, are investigated. It is shown that the experimental radial density profile is close to a zeroth-order Bessel function. The particle-in-cell (PiC) numerical simulations reproducing conditions close to the experiment demonstrate that the discharge initially forms a tubular structure that gradually evolves into a steady-state regime with the <i>a</i> profile close to the Bessel one. Depending on the product of pressure and tube radius <i>pa</i>, three characteristic types of the radial profile are distinguished: tubular (<i>pa</i> <span>( gtrsim )</span> 1 Torr cm), plateau-shaped, and bell-shaped (Bessel, <i>pa</i> &lt; 0.1 Torr cm) profiles with a peak plasma density <i>n</i><sub><i>e</i></sub> ≈ 2.5 × 10<sup>11</sup> cm<sup>–3</sup>. The numerical simulation of the antenna radiation shows that the shape of the radial profile governs the field distribution along the radiating structure and the shape of the radiation pattern. For the wave-type antenna, the resonant half-wavelength is 160, 195, and 115 mm for the tubular, plateau-shaped, and Bessel-like profiles, respectively, while the number of radiation pattern lobes decreases from six to four. For the quarter-wave antenna, the resonant half-wavelength changes from 90 to 105 and then to 60 mm for the same profiles, with the number of lobes decreasing from six to two. Thus, the radial plasma density profile is a key parameter that determines the field distributions and the radiation pattern of the plasma antenna.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1219 - 1230"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068015","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
Runaway Electron Current Generation during Disruptions in Tokamaks with the Plasma–Wall Gap 具有等离子体壁隙的托卡马克破坏过程中失控的电子电流产生
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-27 DOI: 10.1134/S1063780X2660088X
V. Yu. Savin
{"title":"Runaway Electron Current Generation during Disruptions in Tokamaks with the Plasma–Wall Gap","authors":"V. Yu. Savin","doi":"10.1134/S1063780X2660088X","DOIUrl":"10.1134/S1063780X2660088X","url":null,"abstract":"<p>For an axially symmetric tokamak model, the dynamics of the runaway electron current during disruptions is analyzed taking into account the influence of the vacuum gap and the resistivity of the vacuum chamber wall. The aim of the paper is to determine the contribution of the vacuum gap and the wall resistance to the runaway electron current. In general, the analysis follows the scheme proposed in the work of Martín‑Solís et al. [2], which summarizes the current theoretical studies on runaway electron generation, but with a more realistic description of the system geometry (a non-zero plasma–wall gap, which was not previously taken into account in studies on runaway electron generation). It is shown that the current generation factor γ (the logarithm of the ratio of the runaway current density at the end of the disruption to the current density before the disruption) and the current itself at the end of the disruption are greater, the greater the width of the gap between the plasma boundary and the tokamak wall and the greater the resistance of the wall.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 9","pages":"1121 - 1130"},"PeriodicalIF":1.0,"publicationDate":"2026-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149067991","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 Properties and Parameters of Plasma of Nanosecond Diffuse and Spark Discharges in Air at Various Humidity 不同湿度下纳秒扩散放电和火花放电等离子体的光学特性和参数
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-14 DOI: 10.1134/S1063780X26601057
V. F. Tarasenko, D. V. Beloplotov, A. N. Panchenko, D. A. Sorokin
{"title":"Optical Properties and Parameters of Plasma of Nanosecond Diffuse and Spark Discharges in Air at Various Humidity","authors":"V. F. Tarasenko,&nbsp;D. V. Beloplotov,&nbsp;A. N. Panchenko,&nbsp;D. A. Sorokin","doi":"10.1134/S1063780X26601057","DOIUrl":"10.1134/S1063780X26601057","url":null,"abstract":"<p>The results of an experimental study of a nanosecond discharge in a 1.75 mm long tip-to-tip gap in dry and humid air at voltage pulse amplitudes across a matched load of 10 and 25 kV are presented. The tip electrodes have been made of carbon. The discharge has been initiated by trapezoidal voltage pulses with a duration of 13 ns and a rise time of 2.2 ns. A coaxial electrical circuit for connecting the gas-discharge chamber, ensuring a single breakdown mode, is used. A set of diagnostic methods is employed: high-frequency voltage and current measurements, a four-channel ICCD camera, high-resolution time-integral photography, and time-integral and time-resolved optical emission spectroscopy. It is established that the breakdown occurs in 0.1–0.2 ns via counter-propagating streamers, after the collision of which a diffuse discharge is formed lasting ≈2–5 ns. Regardless of the pulse amplitude, approximately 1/3 of its total energy is deposited into the plasma (5 and 32 mJ, respectively). The discharge channel has a non-uniform filamentary structure. In the plasma emission spectrum, a broadband continuum with a maximum near 400 nm, the intensity of which increases in humid air at high energy inputs, bands of the second positive system of the nitrogen molecule, as well as N I, O I, N II, C I, Na I, K I, and H I lines are identified. It is shown that immediately after the breakdown (the diffuse stage of the discharge), the electron temperature reaches ≈10 eV, and the reduced electric field is ≈450–500 Td. The electron density is determined from the Stark broadening of the H<sub>α</sub> line.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 8","pages":"1087 - 1101"},"PeriodicalIF":1.0,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962041","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
A Numerical Simulation Model of Double-Discharge Ablative Pulsed Plasma Thrusters 双放电烧蚀脉冲等离子体推力器的数值模拟模型
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-14 DOI: 10.1134/S1063780X26600623
Guorui Sun
{"title":"A Numerical Simulation Model of Double-Discharge Ablative Pulsed Plasma Thrusters","authors":"Guorui Sun","doi":"10.1134/S1063780X26600623","DOIUrl":"10.1134/S1063780X26600623","url":null,"abstract":"<p>Ablative pulsed plasma thrusters (APPTs) are widely employed as electric propulsion systems for small spacecraft, particularly for orbital maintenance and attitude control missions. However, their performance is severely constrained by late-time ablation (LTA), a phenomenon in which residual heat from the main discharge induces continuous propellant ablation after the pulse terminates, generating unaccelerated neutral particles that account for up to 50% of the total propellant mass loss. To mitigate this fundamental limitation, the double-discharge APPT (DD-APPT) configuration was proposed. In this study, a comprehensive zero-dimensional numerical model is developed to simulate the sequential discharge processes and predict the thruster’s propulsion performance, accounts for the spatial separation of ablation and acceleration regions. Simulation results demonstrate that the optimal energy allocation strategy is to assign 1/8 of the total energy to the primary discharge (for controlled propellant ablation and initial plasma generation) and 7/8 to the secondary discharge (for efficient plasma and acceleration).</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 8","pages":"1030 - 1040"},"PeriodicalIF":1.0,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962052","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
Resonance Instability of Dusty Sound 含尘声的共振不稳定性
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-09-14 DOI: 10.1134/S1063780X26601100
A. M. Ignatov
{"title":"Resonance Instability of Dusty Sound","authors":"A. M. Ignatov","doi":"10.1134/S1063780X26601100","DOIUrl":"10.1134/S1063780X26601100","url":null,"abstract":"<p>The instability of dusty sound in plasma with a directed ion flow is investigated. This instability develops when the frequency of dust oscillations coincides with the frequency of ion oscillations. Characteristic frequencies and growth rates of the most unstable oscillations are obtained. It is shown that the interaction of waves in the nonlinear stage of instability development results in the formation of dust blobs elongated along the ion flow.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 8","pages":"1048 - 1053"},"PeriodicalIF":1.0,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962029","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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