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Distinctive Features of Anomalous Plasma Radiation in Experiments on Electron Cyclotron Heating Using Extraordinary Wave at the Second Resonance Harmonic in a Wide Density Range 大密度范围内二共振超高频加热电子回旋加速器实验中等离子体异常辐射的显著特征
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600779
E. Z. Gusakov, A. Yu. Popov
{"title":"Distinctive Features of Anomalous Plasma Radiation in Experiments on Electron Cyclotron Heating Using Extraordinary Wave at the Second Resonance Harmonic in a Wide Density Range","authors":"E. Z. Gusakov,&nbsp;A. Yu. Popov","doi":"10.1134/S1063780X23600779","DOIUrl":"10.1134/S1063780X23600779","url":null,"abstract":"<p>A detailed interpretation of the effect of anomalous radiation is given, which was first observed at the TEXTOR tokamak in experiments on electron cyclotron resonance heating by the extraordinary wave at the second resonance harmonic in a wide range of plasma densities.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"949 - 960"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183922","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 Issue of Possibility of Reducing Anomalous Absorption of Extraordinary Pump Wave in a Wide Range of Plasma Densities 在大等离子体密度范围内减少异常泵浦波异常吸收的可能性问题
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600767
E. Z. Gusakov, A. Yu. Popov
{"title":"On the Issue of Possibility of Reducing Anomalous Absorption of Extraordinary Pump Wave in a Wide Range of Plasma Densities","authors":"E. Z. Gusakov,&nbsp;A. Yu. Popov","doi":"10.1134/S1063780X23600767","DOIUrl":"10.1134/S1063780X23600767","url":null,"abstract":"<p>The consequences are studied of the localization effect of ion Bernstein (IB) waves excited in secondary decay processes accompanying the development of low-threshold parametric decay instability of the extraordinary pump wave, which results in the excitation of the extraordinary wave and the upper-hybrid (UH) wave localized in the plasma. It is shown that in experiments on electron cyclotron resonance plasma heating at the second resonance harmonic, the effect discovered results in a decrease in both the saturation level of primary instability and anomalous absorption level of the pump wave.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"936 - 948"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183926","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
Investigation of the Plasma Current Sheath Dynamics in the Run Down Phase of the Hemispherical Plasma Focus Devices Using Two-Dimensional Time Dependent Modeling 利用二维时间相关模型研究半球形等离子体聚焦器件运行阶段的等离子体电流护套动力学
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600159
M. E. Abdel-kader, M. A. Abd Al-Halim
{"title":"Investigation of the Plasma Current Sheath Dynamics in the Run Down Phase of the Hemispherical Plasma Focus Devices Using Two-Dimensional Time Dependent Modeling","authors":"M. E. Abdel-kader,&nbsp;M. A. Abd Al-Halim","doi":"10.1134/S1063780X23600159","DOIUrl":"10.1134/S1063780X23600159","url":null,"abstract":"<p>The Hemisphere Plasma Focus (HSPF) device is a new construction in which the discharge takes place between two concentric hemispherical electrodes. A 2D snow plow model is designed in order to simulate the distributions of the HSPF characteristics between the two electrodes. The model used the momentum and circuit equations to describe the different characteristics in the rundown phase such as; the distributions of the magnetic field, the sheath velocity, the sheath displacement, and the plasma temperature. The results show that the simulated discharge current is in a good agreement with the experimental signal for input charging voltage of 3 kV and helium gas pressure of 0.6 Torr. The peak discharge current is about 42 kA with rise time of about 8.5 μs and the rundown phase is completed at time of about 6.5 μs. The timelines of the current sheath displacement show that the sheath has almost an umbrella shape. As the current sheath is accelerated in θ-direction towards antipodal point, the magnetic field and the plasma temperature are increased and their values are higher as one goes closer to the inner electrode.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1023 - 1030"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183976","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
Generation of Soft X-Ray and Vacuum Ultraviolet Radiation during the Interaction of a Hydrogen Plasma Flow with a Gas Jet 氢等离子体流与气体射流相互作用过程中软x射线和真空紫外辐射的产生
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600664
D. A. Toporkov, D. A. Burmistrov, V. V. Gavrilov, A. M. Zhitlukhin, V. A. Kostyushin, S. D. Lidzhigoryaev, A. V. Pushina, S. A. Pikuz, S. N. Ryazantsev, I. Yu. Skobelev
{"title":"Generation of Soft X-Ray and Vacuum Ultraviolet Radiation during the Interaction of a Hydrogen Plasma Flow with a Gas Jet","authors":"D. A. Toporkov,&nbsp;D. A. Burmistrov,&nbsp;V. V. Gavrilov,&nbsp;A. M. Zhitlukhin,&nbsp;V. A. Kostyushin,&nbsp;S. D. Lidzhigoryaev,&nbsp;A. V. Pushina,&nbsp;S. A. Pikuz,&nbsp;S. N. Ryazantsev,&nbsp;I. Yu. Skobelev","doi":"10.1134/S1063780X23600664","DOIUrl":"10.1134/S1063780X23600664","url":null,"abstract":"<p>Results are presented of research aimed at creating a compact source of soft X-ray and vacuum ultraviolet radiation through the collision of a powerful plasma flow with a gas jet. In experiments that were carried out, a pulsed electrodynamic accelerator generated a hydrogen plasma flow with an energy constant of ≈50 kJ and duration of 10–15 μs. The flow, with a density of ≈6 × 10<sup>15</sup> cm<sup>–3</sup>, moved at a velocity of (2‒4) × 10<sup>7</sup> cm/s in a longitudinal magnetic field with an induction of up to 2 T and interacted with a flat supersonic gas jet. The maximum molecular density of the gas, nitrogen or neon, in the jet reached 10<sup>17</sup> cm<sup>–3</sup>. The formation of a compact emitting plasma layer with a thickness of 3–5 cm, moving along the path of the hydrogen plasma flow at a speed of approximately 3 × 10<sup>6</sup> cm/s was demonstrated. In several experiments, a tungsten plate was used as an obstacle to confine the motion of the emitting plasma along the magnetic field, localizing the interaction region between the plasma flow and the gas jet within the diagnostic control zone. Soft X-ray obscurography and spectroscopy were used to obtain data regarding the radiation generation from the interaction zone of the hydrogen plasma flow and the gas jet. The results of measuring the radiation energy from the formed plasma are presented: ≈2 kJ in the case of a nitrogen jet and ≈ 3 kJ in the case of a neon jet. Numerical modeling of the line radiation from multi-charged ions and subsequent comparison of calculated and experimental data allowed estimating the electron temperature of the nitrogen and neon plasmas formed during the interaction of the hydrogen plasma flow with the gas jet at a level of ≥40 eV.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1000 - 1005"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183918","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
Dusty Plasma in the Solar System: Celestial Bodies without Atmosphere 太阳系中的尘埃等离子体:没有大气层的天体
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600780
S. I. Popel, L. M. Zelenyi, A. V. Zakharov
{"title":"Dusty Plasma in the Solar System: Celestial Bodies without Atmosphere","authors":"S. I. Popel,&nbsp;L. M. Zelenyi,&nbsp;A. V. Zakharov","doi":"10.1134/S1063780X23600780","DOIUrl":"10.1134/S1063780X23600780","url":null,"abstract":"<p>We present a brief review of research on dusty plasma in the solar system. Special attention is paid to theoretical studies related to the solar-system bodies without atmosphere that are conducted at the Space Research Institute of the Russian Academy of Sciences.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1006 - 1013"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183920","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: 2
Structure of Fluctuations in the Edge Plasma of a Stellarator in Modes with Transport Transitions 输运跃迁模式下仿星器边缘等离子体波动的结构
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600925
D. G. Vasil’kov, N. N. Skvortsova, N. K. Kharchev
{"title":"Structure of Fluctuations in the Edge Plasma of a Stellarator in Modes with Transport Transitions","authors":"D. G. Vasil’kov,&nbsp;N. N. Skvortsova,&nbsp;N. K. Kharchev","doi":"10.1134/S1063780X23600925","DOIUrl":"10.1134/S1063780X23600925","url":null,"abstract":"<p>The evolution of fluctuating signals from electrostatic and magnetic probes and reflectometry on the L-2M stellarator is presented. The L-2M facility is a quasi-stationary toroidal magnetic trap in which plasma is generated and heated by high-power pulsed microwave radiation. Pulses with transitions to improved confinement modes accompanied by an increase in energy, increase in plasma density, and restructuring of the peripheral electric field, were analyzed. Spectral analysis of signals is carried out using Fourier analysis and various wavelets. The possible influence of magnetohydrodynamic and kinetic instabilities on the development of transient processes is considered.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"927 - 935"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X23600925.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183927","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
The Line of the Unit Compressibility Factor in the Low-Temperature Plasma of Metals 金属低温等离子体的单位压缩系数曲线
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600755
E. M. Apfelbaum
{"title":"The Line of the Unit Compressibility Factor in the Low-Temperature Plasma of Metals","authors":"E. M. Apfelbaum","doi":"10.1134/S1063780X23600755","DOIUrl":"10.1134/S1063780X23600755","url":null,"abstract":"<p>The behavior of the line of the unit compressibility factor in the region of low-temperature dense plasma of metals is studied for the first time. The shape of this line is universal in the density–temperature plane for many one-component gases and liquids at low temperatures, along with liquid metals. Using virial expansions and calculations within the framework of the chemical model, we demonstrate that such a similarity breaks apart upon transition to the region of low-temperature plasma of metals. Nevertheless, a weaker similarity expressed in the form of a power law is possible for the discussed line in this region at relatively low densities.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"984 - 990"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183928","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
Numerical Simulation of the Interaction of High-Velocity Plasma Jets Injected in the Earth’s Ionosphere 注入地球电离层的高速等离子体射流相互作用的数值模拟
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600810
T. V. Losseva, E. M. Urvachev, Yu. I. Zetser, A. N. Lyakhov, I. B. Kosarev, Yu. V. Poklad
{"title":"Numerical Simulation of the Interaction of High-Velocity Plasma Jets Injected in the Earth’s Ionosphere","authors":"T. V. Losseva,&nbsp;E. M. Urvachev,&nbsp;Yu. I. Zetser,&nbsp;A. N. Lyakhov,&nbsp;I. B. Kosarev,&nbsp;Yu. V. Poklad","doi":"10.1134/S1063780X23600810","DOIUrl":"10.1134/S1063780X23600810","url":null,"abstract":"<p>The paper presents a numerical simulation of the dynamics of high-velocity aluminum plasma jets with multiple injection in the Earth’s ionosphere. Scenarios of single injection, counter injection, and collimation of plasma jets at a given convergence angle are considered. The gas-dynamic parameters of plasma formations and their optical characteristics are determined.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"991 - 999"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183921","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
Instability of Dust Acoustic Waves in a Dusty Plasma with Dust Charge Variations and Two Different Temperatures for Both Electrons and Ions 尘埃等离子体中电荷变化和电子和离子温度不同的尘埃声波不稳定性
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-08-14 DOI: 10.1134/S1063780X22601729
R. B. Kian, M. H. Mahdieh
{"title":"Instability of Dust Acoustic Waves in a Dusty Plasma with Dust Charge Variations and Two Different Temperatures for Both Electrons and Ions","authors":"R. B. Kian,&nbsp;M. H. Mahdieh","doi":"10.1134/S1063780X22601729","DOIUrl":"10.1134/S1063780X22601729","url":null,"abstract":"<p>The dispersion relation and instability of dust acoustic waves (DAWs) in an unmagnetized dusty plasma with two different temperatures for ions, two different temperatures for electrons, and dust charge fluctuations are investigated. Ions and electrons are assumed to be Maxwellian distributed. The orbital limited motion theory (OLM) is used to derive dust charge fluctuations. The conditions for the instability are found to be significantly modified by the effects of two different temperatures of ions (electrons), dust charge fluctuations, density ratio of ions and density ratio of electrons. Furthermore, it is observed that there is only damping rate in such dusty plasma.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 7","pages":"920 - 925"},"PeriodicalIF":1.1,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4561946","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
Canonical and Experimental Plasma Pressure Profiles in Tokamaks 典型和实验的托卡马克等离子体压力分布
IF 1.1 4区 物理与天体物理
Plasma Physics Reports Pub Date : 2023-08-14 DOI: 10.1134/S1063780X23600597
A. N. Chudnovskiy
{"title":"Canonical and Experimental Plasma Pressure Profiles in Tokamaks","authors":"A. N. Chudnovskiy","doi":"10.1134/S1063780X23600597","DOIUrl":"10.1134/S1063780X23600597","url":null,"abstract":"<p>The statement that the so-called canonical plasma pressure profile is in good agreement with experimental data was the motivating basis for constructing the analytical model of plasma self-organization in tokamaks. The profiles of the normalized plasma electron pressure taken from the international database collecting the experimental data from different tokamaks are compared with the canonical profiles of two types. The comparison shows that the experimental pressure profiles considerably differ from these canonical profiles.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 7","pages":"850 - 858"},"PeriodicalIF":1.1,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4561948","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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