Plasma Physics Reports最新文献_第5页

Effect of Locked MHD Modes on the Efficiency of Plasma Heating by the Neutral Beam Injection Method at the Globus-M2 Spherical Tokamak 锁定 MHD 模式对 Globus-M2 球形托卡马克中性束注入法等离子体加热效率的影响

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600932

Yu. V. Petrov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, A. V. Voronin, V. K. Gusev, N. S. Zhiltsov, A. A. Kavin, E. O. Kiselev, G. S. Kurskiev, V. B. Minaev, I. V. Miroshnikov, A. N. Novokhatskii, N. V. Sakharnov, O. M. Skrekel, V. V. Solokha, A. Yu. Telnova, E. E. Tkachenko, V. A. Tokarev, S. Yu. Tolstyakov, E. A. Tukhmeneva, N. A. Khromov, P. B. Shchegolev, K. D. Shulyatyev

引用次数: 0

Modulational Instability of Electromagnetic Waves on Mars Associated with Dust Acoustic Mode 火星上电磁波的调制不稳定性与尘埃声学模式有关

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600609

T. I. Morozova, S. I. Popel

{"title":"Modulational Instability of Electromagnetic Waves on Mars Associated with Dust Acoustic Mode","authors":"T. I. Morozova, S. I. Popel","doi":"10.1134/S1063780X24600609","DOIUrl":"10.1134/S1063780X24600609","url":null,"abstract":"It is assumed that the low-frequency noise recorded on the surface of Mars may be associated with a charged dust component in its atmosphere and the occurrence of sound perturbations in such a dust system that modulate the electromagnetic wave from the Sun. It is also shown that it can be associated with plasma-dust processes in meteoroid tails. The mechanism for the excitation of modulational instability of an electromagnetic wave associated with a dust acoustic mode in the Martian atmosphere, namely in dust clouds at an altitude of 60 and 100 km, where the dusty plasma with particles of frozen carbon dioxide is detected, is described. It is shown that the development of modulational instability is due to the influence of high-frequency electromagnetic waves on the dusty plasma in the Martian atmosphere from both natural sources (solar radiation, lightning discharges) and anthropogenic nature (from equipment from space satellites and from stations on the surface of the planet). The parameters of electromagnetic pump waves, at which the active development of modulational instability of electromagnetic waves associated with the dust acoustic mode is expected, and the modulational instability growth rates are found. The development of the modulational instability in the dusty plasma of Martian clouds, in turn, can explain the occurrence of low-frequency noise recorded by equipment on the surface of Mars. The relation between observed radio noise in the range of 3 Hz–3 kHz and plasma-dust processes in the Martian atmosphere, in particular, in dust clouds at 60 and 100 km, as well as in dusty plasma meteroid tails, where the dust concentration is high, is discussed.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 7","pages":"822 - 828"},"PeriodicalIF":0.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176347","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

Initiation of a Corona Discharge from Model Hydrometeors in an External Electric Field 模型流体在外加电场中引发电晕放电

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600841

I. M. Kutsyk, E. I. Bochkov

引用次数: 0

Effect of Plasma Toroidal Rotation on Toroidal Alfvén Eigenmode Spectrum in Globus-M2 Spherical Tokamak 等离子体环形旋转对 Globus-M2 球形托卡马克中环形阿尔芬特征模式频谱的影响

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600713

I. M. Balachenkov, Yu. V. Petrov, V. K. Gusev, N. N. Bakharev, N. S. Zhiltsov, G. S. Kurskiev, V. B. Minaev, I. V. Miroshnikov, A. M. Ponomarenko, N. V. Sakharov, A. Yu. Telnova, E. E. Tkachenko, P. B. Shchegolev, A. Yu. Yashin

{"title":"Effect of Plasma Toroidal Rotation on Toroidal Alfvén Eigenmode Spectrum in Globus-M2 Spherical Tokamak","authors":"I. M. Balachenkov, Yu. V. Petrov, V. K. Gusev, N. N. Bakharev, N. S. Zhiltsov, G. S. Kurskiev, V. B. Minaev, I. V. Miroshnikov, A. M. Ponomarenko, N. V. Sakharov, A. Yu. Telnova, E. E. Tkachenko, P. B. Shchegolev, A. Yu. Yashin","doi":"10.1134/S1063780X24600713","DOIUrl":"10.1134/S1063780X24600713","url":null,"abstract":"In experiments with neutral beam injection on the Globus-M2 spherical tokamak, sequences of long-lasting harmonics of toroidal Alfvén modes were discovered, equidistant from each other in frequency and shifted from zero by a constant value. Using microwave Doppler backscattering diagnostics, the central localization of toroidal modes was determined. In this work, the possibility of “splitting” of toroidal harmonics due to the Doppler shift caused by the toroidal rotation of the plasma is being discussed. It is found that the unshifted frequency of the toroidal Alfvén mode obtained from the spectrum of the magnetic probe signal is in good agreement with the frequency of the mode calculated at the mode location radius, and the toroidal rotation frequency, also determined from the spectrum of the magnetic probe signal, correlates well with the rotation frequency measured using charge exchange spectroscopy diagnostics, but differs by a constant amount. Possible reasons for the discrepancies are being discussed.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 7","pages":"765 - 772"},"PeriodicalIF":0.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176306","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

Simulation of Processes Initiated in Nickel Nitrate Aqueous Solution by an Atmospheric Pressure DC Gas Discharge 模拟常压直流气体放电在硝酸镍水溶液中引发的过程

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600877

D. A. Shutov, A. N. Ivanov, P. A. Ignat’eva, V. V. Rybkin

{"title":"Simulation of Processes Initiated in Nickel Nitrate Aqueous Solution by an Atmospheric Pressure DC Gas Discharge","authors":"D. A. Shutov, A. N. Ivanov, P. A. Ignat’eva, V. V. Rybkin","doi":"10.1134/S1063780X24600877","DOIUrl":"10.1134/S1063780X24600877","url":null,"abstract":"We propose a 0-D model describing processes in a system comprising an atmospheric pressure DC discharge and aqueous nickel nitrate solution. The model is represented as two coupled subsystems: plasma and solution. Characteristics of the discharge plasma have been determined by jointly solving the Boltzmann equation for electrons; equations of vibrational kinetics for the ground states of N2, O2, NO, H2, and H2O molecules; and equations of chemical kinetics (328 reactions, 34 components). In doing so, use was made of experimentally determined reduced electric field strength and vibrational and gas temperatures. The kinetics of the processes in the solution included 121 reactions and 34 components. The calculation results agree with experimental data on the vibrational temperatures of N2(X) molecules, the kinetics of the decrease in Ni2+ concentration, and the variation in solution pH. We have determined the degree of Ni2+ conversion and the energy yield of conversion and identified the mechanisms that determine the concentration of the major solution components.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 7","pages":"853 - 864"},"PeriodicalIF":0.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176355","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

Studies of Plasma Flow Spatial Asymmetry Using Mach Probe in GOL-NB Device 利用 GOL-NB 设备中的马赫探针研究等离子体流的空间不对称性

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600804

E. N. Sidorov, V. I. Batkin, I. A. Ivanov, K. N. Kuklin, N. A. Melnikov, S. V. Polosatkin, V. V. Postupaev, A. F. Rovenskikh

{"title":"Studies of Plasma Flow Spatial Asymmetry Using Mach Probe in GOL-NB Device","authors":"E. N. Sidorov, V. I. Batkin, I. A. Ivanov, K. N. Kuklin, N. A. Melnikov, S. V. Polosatkin, V. V. Postupaev, A. F. Rovenskikh","doi":"10.1134/S1063780X24600804","DOIUrl":"10.1134/S1063780X24600804","url":null,"abstract":"The results of preliminary experiments on measuring the spatial asymmetry of plasma flows in the GOL-NB device using movable Mach probe are presented and the diagnostics used is described. In the experiments, the high-field sections were mounted in the configuration with solenoidal magnetic field. The dynamics of plasma flows was recorded which was expected in the trap: the plasma flowed from the plasma gun along the magnetic field, accumulated in the GOL-NB central trap, and then after the plasma gun was switched off, flowed out from the central trap in two directions. At time of transition from the stage of plasma accumulation to the stage of its decay, the direction of plasma flow in the input high-field section was inverted. The balance of particles in the central trap is discussed. Experiments have shown that this technique can be used for studying the effects of improving plasma confinement after switching to the multiple-mirror configuration of high-field sections, in which, according to theory, under optimal conditions, a flow of b-ackscattered particles should arise, which will return them from the multiple-mirror sections to the confinement zone.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 7","pages":"781 - 791"},"PeriodicalIF":0.9,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176304","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

Development of Instabilities in Thin Aluminum Foils Exploded Using Generator with Current of up to 10 kA 使用电流高达 10 kA 的发电机爆炸的薄铝箔的不稳定性发展

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-09-05 DOI: 10.1134/S1063780X24600889

S. A. Pikuz, I. N. Tilikin, V. M. Romanova, A. R. Mingaleev, T. A. Shelkovenko

引用次数: 0

Powerful Source of Soft X-Ray Radiation Based on Z-Pinch of Nested Arrays for Experiments in High-Energy Density Physics 基于嵌套阵列 Z-Pinch 的强大软 X 射线辐射源，用于高能密度物理实验

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600683

K. N. Mitrofanov, A. N. Gritsuk, V. V. Aleksandrov, A. V. Branitsky, E. V. Grabovski, I. N. Frolov, V. V. Ryzhakov

{"title":"Powerful Source of Soft X-Ray Radiation Based on Z-Pinch of Nested Arrays for Experiments in High-Energy Density Physics","authors":"K. N. Mitrofanov, A. N. Gritsuk, V. V. Aleksandrov, A. V. Branitsky, E. V. Grabovski, I. N. Frolov, V. V. Ryzhakov","doi":"10.1134/S1063780X24600683","DOIUrl":"10.1134/S1063780X24600683","url":null,"abstract":"The results of research on the creation of a powerful source of soft X-ray radiation (SXR, hν > 100 eV) based on the Z-pinch of compact nested arrays are presented. One of the applications of such an SXR source can be radiation ablation of targets made of various substances in experiments on high-energy density physics and extreme states of matter, which are currently being actively carried out worldwide. Experiments are carried out on plasma implosion of combined nested arrays with different ratios of array radii at a discharge current level of up to 3.5 MA at the pulse power facility Angara-5-1. The outer array consisted of fibers of a substance with a low atomic number (polypropylene) and the inner array consisted of a substance with a high atomic number (tungsten). It is shown that in the case of nested arrays of this design, it is possible to obtain a significant (~1.4 times) increase in the peak SXR power compared to single W arrays with the same parameters as the W array in the inner array. At the same time, spectral data obtained using a “flat field” grazing incidence spectrograph demonstrate a significant decrease in the fraction of tungsten ions in the trailing plasma around the pinch of nested arrays. By optimizing the linear mass of the outer array and its radius, powerful and short SXR pulses with amplitude of ~10 TW, energy of ~130 kJ and duration of ~4–5 ns are obtained. This made it possible to increase the incident power density and fluence on the target up to 1.55 TW/cm2 and 17 kJ/cm2, respectively, in experiments on extreme states of matter currently being carried out at the facility.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 6","pages":"697 - 715"},"PeriodicalIF":0.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141872926","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

Microwave Method of Tubular Plasma Density Measurement for Relativistic Microwave Oscillator 相对论微波振荡器管状等离子体密度测量微波法

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600737

A. V. Ponomarev, D. K. Ul’yanov

引用次数: 0

Higher Order Corrections on the Plasma Wave Characteristics with Cairns–Gurevich Distribution 利用凯恩斯-古雷维奇分布对等离子体波特性进行高阶修正

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X23600809

S. Bansal, T. S. Gill

{"title":"Higher Order Corrections on the Plasma Wave Characteristics with Cairns–Gurevich Distribution","authors":"S. Bansal, T. S. Gill","doi":"10.1134/S1063780X23600809","DOIUrl":"10.1134/S1063780X23600809","url":null,"abstract":"The propagation of electron-acoustic waves in a collisionless unmagnetized plasma composed of hot electrons obeying the Cairns–Gurevich (CG) distribution, inertial cold electrons and stationary ions are considered. The basic field equations of the above described plasma is re-examined through the use of the modified Poincare–Lighthill–Kuo (PLK) method. Introducing the strained coordinates and expanding the field quantities into the parameter (epsilon ), a set of differential equations is obtained. The lowest order term in the perturbation expansion is governed by the modified KdV equation, whereas the second order term is governed by the modified linearized KdV equation with nonhomogeneous term. Then, studying the localized travelling wave solution for the evolution equations, the strained coordinates for this order is determined so as to remove the possible secularities that might occur in the solution. It is observed that the ratio of the second order term to the first order term in the perturbation expansion is negative and not so small. This is equivalent to saying that the contribution of second order term decreases the wave amplitude. In other words, retaining only the first order term in the perturbation expansion overestimates the real value of the field quantities.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 6","pages":"749 - 755"},"PeriodicalIF":0.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868559","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