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Separation of Dust Particles in a Plasma Trap in the Area of Narrowing of the Current Channel 等离子体阱中尘埃颗粒在电流通道变窄区域的分离
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600635
S. I. Pavlov, E. S. Dzlieva, L. G. Dyachkov, M. A. Gasilov, M. B. Morozova, L. A. Novikov, V. A. Polishchuk, V. Yu. Karasev
{"title":"Separation of Dust Particles in a Plasma Trap in the Area of Narrowing of the Current Channel","authors":"S. I. Pavlov,&nbsp;E. S. Dzlieva,&nbsp;L. G. Dyachkov,&nbsp;M. A. Gasilov,&nbsp;M. B. Morozova,&nbsp;L. A. Novikov,&nbsp;V. A. Polishchuk,&nbsp;V. Yu. Karasev","doi":"10.1134/S1063780X26600635","DOIUrl":"10.1134/S1063780X26600635","url":null,"abstract":"<p>The selection of dust particles in a plasma trap in the region of a double electric layer in a glow discharge formed by a sharp narrowing of the current channel created by introducing a dielectric insert into the discharge has been studied. The theoretical model of the formation of a double electric layer with a wider cross-section on the cathode side, available in the literature, has been analyzed. It has been shown that under typical conditions for dusty plasma in a helium discharge, the potential jump does not exceed 12 V. The selection of polydisperse quartz particles at low discharge currents has been experimentally studied; it has been found that there is a weak dependence of particle size on pressure. Under experimental conditions, the size of dust particles was about 4 μm. The use of dust particles as a kind of “dust probes” based on the estimation of the balance of vertical forces has showed the correspondence between the conclusions of the discussed theory and the experimental results.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"715 - 722"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699750","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
Observation of Intermediate Frequency Range Instabilities during Low Hybrid Current Drive Experiments at Globus-M2 Spherical Tokamak Globus-M2球形托卡马克低杂流驱动实验中频范围不稳定性观察
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600283
I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, E. Z. Gusakov, V. K. Gusev, V. V. Dyachenko, N. S. Zhiltsov, E. O. Kiselev, A. N. Konovalov, A. E. Konkov, P. S. Korenev, S. V. Krikunov, G. S. Kurskiev, I. V. Miroshnikov, V. B. Minaev, Yu. V. Petrov, V. V. Rozhdestvenskiy, N. V. Sakharov, O. M. Skrekel, V. V. Solokha, A. Yu. Telnova, E. E. Tkachenko, V. A. Tokarev, S. Yu. Tolstyakov, E. A. Tukhmeneva, N. A. Khromov, K. D. Shulyatiev, P. B. Shchegolev
{"title":"Observation of Intermediate Frequency Range Instabilities during Low Hybrid Current Drive Experiments at Globus-M2 Spherical Tokamak","authors":"I. M. Balachenkov,&nbsp;N. N. Bakharev,&nbsp;V. I. Varfolomeev,&nbsp;E. Z. Gusakov,&nbsp;V. K. Gusev,&nbsp;V. V. Dyachenko,&nbsp;N. S. Zhiltsov,&nbsp;E. O. Kiselev,&nbsp;A. N. Konovalov,&nbsp;A. E. Konkov,&nbsp;P. S. Korenev,&nbsp;S. V. Krikunov,&nbsp;G. S. Kurskiev,&nbsp;I. V. Miroshnikov,&nbsp;V. B. Minaev,&nbsp;Yu. V. Petrov,&nbsp;V. V. Rozhdestvenskiy,&nbsp;N. V. Sakharov,&nbsp;O. M. Skrekel,&nbsp;V. V. Solokha,&nbsp;A. Yu. Telnova,&nbsp;E. E. Tkachenko,&nbsp;V. A. Tokarev,&nbsp;S. Yu. Tolstyakov,&nbsp;E. A. Tukhmeneva,&nbsp;N. A. Khromov,&nbsp;K. D. Shulyatiev,&nbsp;P. B. Shchegolev","doi":"10.1134/S1063780X26600283","DOIUrl":"10.1134/S1063780X26600283","url":null,"abstract":"<p>At the Globus-M2 tokamak oscillations in the 30–90 MHz range were observed by means of magnetic probes in low hybrid current drive experiments. These oscillations had a discrete spectrum consisting of several harmonic sequences with a frequency splitting on the order of the ion-cyclotron frequency. Observed oscillations were identified as magnetosonic whistlers or helicons. Using microwave radiometer and other diagnostics data, it was shown that the excitation of magnetosonic whistlers is a consequence of the development of so-called “fan” instability of the electron beam, or MHD sawtooth instability. It was also demonstrated a correlation between the decay of magnetosonic whistlers and the excitation of fast magnetosonic waves.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"641 - 650"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X26600283.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699621","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
Estimation of Relativistic Effects on Atomic Spectra of Hydrogen-Like Ions in Dense Plasmas Based on the Ion Sphere Model 基于离子球模型的致密等离子体中类氢离子原子光谱的相对论效应估计
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600246
X.-F. Li, Z.-J. Guo, J.-H. Liu, G. Jiang
{"title":"Estimation of Relativistic Effects on Atomic Spectra of Hydrogen-Like Ions in Dense Plasmas Based on the Ion Sphere Model","authors":"X.-F. Li,&nbsp;Z.-J. Guo,&nbsp;J.-H. Liu,&nbsp;G. Jiang","doi":"10.1134/S1063780X26600246","DOIUrl":"10.1134/S1063780X26600246","url":null,"abstract":"<p>Relativistic effects play a pivotal role in modulating the electronic structures and transition properties of highly charged ions in dense plasmas, especially for systems with mid-to-high nuclear charge numbers <i>Z</i>. In this work, the 1<i>s–</i>2<i>p</i> transition energies and transition probabilities of hydrogen-like ions (<i>Z</i> = 6, 18, 26, and 74) are calculated using the multiconfiguration Dirac–Hartree–Fock (MCDHF) method coupled with the self-consistent-field ion sphere model (SCFISM) or the ion sphere model (ISM) via GRASP2K code. The results show that relativistic effects depend strongly on nuclear charge number <i>Z</i> (following a <i>Z</i><sup>2</sup> scaling law) and increase significantly with electron density, while they decrease weakly and tend to saturate with increasing temperature. This work provides a reliable theoretical method for quantifying relativistic effects on the atomic spectra of hydrogen-like ions in dense plasmas.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"705 - 714"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699749","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
Influence of Parasitic Current on the Breakdown Voltage of a High-Voltage Gap in a Pseudospark Switch 寄生电流对假火花开关高压间隙击穿电压的影响
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600763
Yu. D. Korolev, N. V. Landl, O. B. Frants, A. V. Bolotov, V. O. Nekhoroshev
{"title":"Influence of Parasitic Current on the Breakdown Voltage of a High-Voltage Gap in a Pseudospark Switch","authors":"Yu. D. Korolev,&nbsp;N. V. Landl,&nbsp;O. B. Frants,&nbsp;A. V. Bolotov,&nbsp;V. O. Nekhoroshev","doi":"10.1134/S1063780X26600763","DOIUrl":"10.1134/S1063780X26600763","url":null,"abstract":"<p>An auxiliary glow discharge in the trigger unit of a pseudospark switch is investigated. The interelectrode volume of the auxiliary discharge communicates with the volume of the grounded cathode cavity of the high-voltage gap through an opening in the flat part of one of the hollow electrodes. Then a parasitic current arises to the grounded cathode cavity through the hole. The mechanism of formation of parasitic current for various electrical power supply circuits of an auxiliary glow discharge and the influence of parasitic current on the static breakdown voltage of a high-voltage gap is discussed. It is shown that parasitic current can be formed because of the emergence of an ion flow from the negative glow plasma, an ion flow from the positive column plasma, and an electron flow from the positive column plasma. It is also possible to form a parasitic electron current during ion bombardment of one of the electrodes of the trigger unit. The greatest reduction in the breakdown voltage of the high-voltage gap occurs when a parasitic electron current appears when electrons leave the plasma of the positive column. For the trigger unit, a geometric design in which the influence of the electron parasitic current on the breakdown voltage is minimal is proposed.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"736 - 744"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699751","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
Electron Transport and Kinetic Coefficients in Mixtures of Methane and Water Vapor 甲烷和水蒸气混合物中的电子传递和动力学系数
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600453
D. V. Tereshonok, M. A. Antonova, A. D. Ermakov, D. A. Kardaev
{"title":"Electron Transport and Kinetic Coefficients in Mixtures of Methane and Water Vapor","authors":"D. V. Tereshonok,&nbsp;M. A. Antonova,&nbsp;A. D. Ermakov,&nbsp;D. A. Kardaev","doi":"10.1134/S1063780X26600453","DOIUrl":"10.1134/S1063780X26600453","url":null,"abstract":"<p>A numerical solution of the stationary spatially homogeneous Boltzmann kinetic equation has been performed in the two-term approximation in mixtures of methane and water vapor in a wide range of reduced electric fields from 10 to 1000 Td (1 Td = 10<sup>–21</sup> V m<sup>2</sup>) and the percentage of methane (from 0 to 100%). The average electron energy, electron mobility, and diffusion coefficients have been found, and the total constants of electron ionization and attachment have been calculated. The non-monotonic behavior of the transport and kinetic parameters of electrons depending on the percentage of methane has been shown and a qualitative explanation of this effect has been given. The use of the Opal distribution for secondary electrons produced in the impact ionization process in the ionization integral has been discussed.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"745 - 754"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699624","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
Conceptual Design of Fundamental Harmonic Electron Cyclotron Plasma Heating System in the GOL-NB Facility golb - nb装置基次谐波电子回旋加速器等离子体加热系统概念设计
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600349
E. D. Gospodchikov, T. A. Khusainov, V. V. Postupaev, A. G. Shalashov
{"title":"Conceptual Design of Fundamental Harmonic Electron Cyclotron Plasma Heating System in the GOL-NB Facility","authors":"E. D. Gospodchikov,&nbsp;T. A. Khusainov,&nbsp;V. V. Postupaev,&nbsp;A. G. Shalashov","doi":"10.1134/S1063780X26600349","DOIUrl":"10.1134/S1063780X26600349","url":null,"abstract":"<p>The results of modeling optimal scenario for electron cyclotron resonance (ECR) plasma heating in the GOL-NB multiple-mirror trap are presented. These results can serve as a basis for designing a system for auxiliary ECR plasma heating. Plasma heating by the extraordinary wave at the fundamental cyclotron harmonic of 70 GHz using microwave beam launched obliquely into the plasma from the high magnetic field side is demonstrated. A launching scheme is proposed that minimizes the influence of parasitic ECR in the vacuum chamber. For the basic magnetic configurations, the proposed scheme ensures ECR plasma heating with an absorption efficiency exceeding 90% in the range of on-axis plasma densities of <span>((0.1{-} 4.5) times {10^{19}};{{text{m}}^{ - {text{3}}}})</span> and an electron temperature of 20 eV. If performing special optimization, the density limit can be increased up to <span>(5.6 times {10^{19}})</span> m<sup>–3</sup>.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"669 - 683"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699622","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
Enhancement of Negative Ion Density, Its Measurement and Comparison by Different Diagnostics in a Hot Cathode Discharge 热阴极放电中负离子密度的增强、测量及不同诊断方法的比较
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-08-11 DOI: 10.1134/S1063780X26600258
J. Sangma, N. Sharma, P. Pathak, M. Chakraborty
{"title":"Enhancement of Negative Ion Density, Its Measurement and Comparison by Different Diagnostics in a Hot Cathode Discharge","authors":"J. Sangma,&nbsp;N. Sharma,&nbsp;P. Pathak,&nbsp;M. Chakraborty","doi":"10.1134/S1063780X26600258","DOIUrl":"10.1134/S1063780X26600258","url":null,"abstract":"<p>Measurements and studies of the hydrogen negative ion density have become an important topic in plasma physics. Here hydrogen negative ions are produced by the volume production technique in a hot cathode discharge. The density of negative ions is enhanced by a novel method using auxiliary filaments and conditioning the magnetic cage of the target region. Negative ion density is measured using the two-probe and ion acoustic wave techniques. The conditioning of the target cage enhanced the production of negative ions by almost 2 orders of magnitude and measurement of <span>(alpha = {N_ - }{text{/}}{N_e})</span> using the two techniques showed similar trend with each other. The measured values when compared theoretically by using the particle balance model, are found to agree qualitatively.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 6","pages":"755 - 768"},"PeriodicalIF":1.0,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148699623","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 Method for Determining the Concentrations of the C and Fe Impurities in the T-15MD Tokamak Discharges Using the Continuous Plasma Radiation Spectrum in the Visible and Soft X-Ray Regions 用可见和软x射线区连续等离子体辐射光谱测定T-15MD托卡马克放电中C和Fe杂质浓度的方法
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-06-28 DOI: 10.1134/S1063780X26600507
S. D. Suntsov, V. A. Krupin, V. F. Strizhov, E. D. Butorin, I. A. Zemtsov, A. R. Nemets, D. V. Ryzhakov
{"title":"A Method for Determining the Concentrations of the C and Fe Impurities in the T-15MD Tokamak Discharges Using the Continuous Plasma Radiation Spectrum in the Visible and Soft X-Ray Regions","authors":"S. D. Suntsov,&nbsp;V. A. Krupin,&nbsp;V. F. Strizhov,&nbsp;E. D. Butorin,&nbsp;I. A. Zemtsov,&nbsp;A. R. Nemets,&nbsp;D. V. Ryzhakov","doi":"10.1134/S1063780X26600507","DOIUrl":"10.1134/S1063780X26600507","url":null,"abstract":"<p>A method is proposed to simultaneously determine the concentrations of atoms and ions of a heavy (iron, Fe) and a light (carbon, C) impurity in the T-15MD tokamak plasma. With auxiliary heating power for ions and electrons in the installation of ~15–20 MW, when fusion temperatures <i>T</i><sub><i>i</i></sub> ~ <i>T</i><sub><i>e</i></sub> ~ 5–9 keV are reached at a density of <i>n</i><sub><i>e</i></sub> ~ 10<sup>20</sup> m<sup>–3</sup>, high amounts of impurity materials from the chamber wall (Fe) and protective carbon tiles (C) are expected to enter the tokamak discharge. These impurities can worsen the plasma conductivity and cause electron energy loss through radiation, having an extremely negative effect on the key plasma characteristics: its heating, confinement, and stability. Simultaneous measurements of the absolute values and spatial distributions of the intensity of the plasma radiation continuum in the visible (2.37 eV) and soft X-ray (2.65 keV) spectral ranges combined with measurements of electron temperature <i>T</i><sub><i>e</i></sub> and plasma density <i>n</i><sub><i>e</i></sub> profiles and magnetic surface distributions in the plasma column allow one to use the radiation–collisional or coronal models to determine the values and profiles of the C and Fe impurity concentrations and, consequently, monitor the concentrations of both impurities and their decrease.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 5","pages":"515 - 530"},"PeriodicalIF":1.0,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323875","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
Wigner’s Function Method for Describing Linear Conversion of Electromagnetic Waves in Overdense Gyrotropic Plasma 描述超密涡旋等离子体中电磁波线性转换的Wigner函数法
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-06-28 DOI: 10.1134/S1063780X26600350
E. D. Gospodchikov, A. A. Balakin, P. A. Chuvakin, A. G. Shalashov
{"title":"Wigner’s Function Method for Describing Linear Conversion of Electromagnetic Waves in Overdense Gyrotropic Plasma","authors":"E. D. Gospodchikov,&nbsp;A. A. Balakin,&nbsp;P. A. Chuvakin,&nbsp;A. G. Shalashov","doi":"10.1134/S1063780X26600350","DOIUrl":"10.1134/S1063780X26600350","url":null,"abstract":"<p>A general method for accounting for the effect of electromagnetic wave tunneling through the evanescent region in inhomogeneous magnetized plasma within the ray kinetic equation framework (Weyl formalism, method of Wigner functions) is developed. The proposed approach is based on analytical solutions of reference Maxwell’s equations in a vicinity of the linear mode coupling region and preserves the main numerical advantage of the kinetic equation method—the ability to calculate all rays independently. The method is adapted to describe the linear mode coupling (conversion of the ordinary and extraordinary waves) in the vicinity of plasma cutoffs in toroidal plasmas, which is important for modeling microwave heating of overdense hot plasmas in tokamaks. An example of numerical calculation of the linear conversion of microwave radiation in a tokamak plasma using the new method is given.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 5","pages":"556 - 568"},"PeriodicalIF":1.0,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323878","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
Electron Nonthermality Effects on Phase-mixing of Electron Acoustic Waves in Plasmas 等离子体中电子声波相混的电子非热效应
IF 1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2026-06-28 DOI: 10.1134/S1063780X25604420
A. Biswas, C. Maity, S. Pramanik
{"title":"Electron Nonthermality Effects on Phase-mixing of Electron Acoustic Waves in Plasmas","authors":"A. Biswas,&nbsp;C. Maity,&nbsp;S. Pramanik","doi":"10.1134/S1063780X25604420","DOIUrl":"10.1134/S1063780X25604420","url":null,"abstract":"<p>The spatio-temporal evolution of electron acoustic waves (EAWs) in plasmas containing cold mobile electrons, nonthermal hot electrons, and cold mobile ions has been investigated. The hot electrons have been considered to be either kappa or Cairns distributed, since such nonthermal distributions for electrons are quite ubiquitous in various space plasma environments. It is revealed that the EAWs undergo a collisionless damping through the process of phase-mixing due to ion mass finiteness, and that this damping is profoundly influenced by the nonthermality of the hot electrons. The consideration of the kappa-distributed hot electrons causes the phase-mixing time to be higher in comparison to the time in plasmas with Maxwell–Boltzmann (MB) distributed hot electrons, while the consideration of Cairns-distributed electrons, leads to phase-mixing time that is lower than in the MB-limit case. Additionally, the phase-mixing time is found to be affected by the temperature and the equilibrium density of the hot electrons. We expect the results of our investigation to be relevant in various space plasma situations.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 5","pages":"620 - 630"},"PeriodicalIF":1.0,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323872","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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