Plasma Physics Reports最新文献

Influence of Initial Density Distribution of a Substance on the Compression Stability and Radiation Characteristics of Metal-Puff Liners 物质初始密度分布对金属发泡衬垫压缩稳定性和辐射特性的影响

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601161

A. G. Rousskikh, A. S. Zhigalin, V. I. Oreshkin, N. A. Ratakhin, A. M. Kuzminykh

{"title":"Influence of Initial Density Distribution of a Substance on the Compression Stability and Radiation Characteristics of Metal-Puff Liners","authors":"A. G. Rousskikh, A. S. Zhigalin, V. I. Oreshkin, N. A. Ratakhin, A. M. Kuzminykh","doi":"10.1134/S1063780X26601161","DOIUrl":"10.1134/S1063780X26601161","url":null,"abstract":"The properties of high-temperature plasma formed during compression of metal-puff liners, which are one of the varieties of Z-pinches, were investigated. The main attention was paid to the influence of the initial distribution of the density of the substance on the compression process and on the radiation characteristics of the liners. Before the implosion process began, the liner’s plasma shell was formed through the combustion of a high-current vacuum arc discharge initiated along the dielectric surface. To form the plasma shell, two plasma gun designs with different electrode geometries were used. The experiments were carried out on a pulse power generator IMRI-5 with a current amplitude in the load of 350 kA and a rise time of 600 ns. During the experiments, the following parameters were recorded: X-ray radiation power; optical images of the liner at different points in time; voltage drop on the liner; IMRI-5 generator current and its derivative, as well as plasma generator current and its derivative. The obtained optical images of the compression of metal-puff liners allow us to state that the use of a plasma gun (both in the first and second modifications) makes it possible to form a shell in which, during compression, the development of Rayleigh–Taylor instabilities is significantly suppressed. According to the authors, the main reason for the effective suppression of RT instabilities is the presence of a radial density distribution profile of the substance in the created plasma shell, which is close in shape to a power function with a degree of –3.5. The use of the second modification of the plasma gun allows to increase the power and radiation output by more than 1.5 times.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1321 - 1331"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309540","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

Dispersion Interferometer as an Instrument of Plasma Electron Density Control 色散干涉仪在等离子体电子密度控制中的应用

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601215

S. V. Ivanenko, A. L. Solomakhin, P. V. Pershin, P. V. Zubarev, K. D. Shulyatiev, N. N. Bakharev, V. V. Solokha, E. O. Kiselev, E. E. Tkachenko, O. M. Skrekel, Yu. V. Petrov, N. V. Sakharov, V. K. Gusev, S. V. Krikunov, A. N. Novokhatskii, N. S. Zhiltsov, G. S. Kurskiev, P. B. Shchegolev, V. B. Minaev, P. A. Bagryansky

{"title":"Dispersion Interferometer as an Instrument of Plasma Electron Density Control","authors":"S. V. Ivanenko, A. L. Solomakhin, P. V. Pershin, P. V. Zubarev, K. D. Shulyatiev, N. N. Bakharev, V. V. Solokha, E. O. Kiselev, E. E. Tkachenko, O. M. Skrekel, Yu. V. Petrov, N. V. Sakharov, V. K. Gusev, S. V. Krikunov, A. N. Novokhatskii, N. S. Zhiltsov, G. S. Kurskiev, P. B. Shchegolev, V. B. Minaev, P. A. Bagryansky","doi":"10.1134/S1063780X26601215","DOIUrl":"10.1134/S1063780X26601215","url":null,"abstract":"The article describes the possibility of the plasma density control in fusion devices using a dispersion interferometer by example of Globus-M2 tokamak (Saint Petersburg, Russia) experiments. The characteristics of the dispersion interferometer developed at the Budker Institute of Nuclear Physics (Novosibirsk, Russia): measurement error of integral plasma density ≤6 × 1016 m–2 and time resolution of 20 μs, made it possible to use its measurements for generating feedback signals in control loops. Plasma density at Globus-M2 discharges was controlled using a piezoelectric voltage-controlled gas valve. The formation of control signals is based on the PID (proportional–integral–derivative) control algorithm implemented in digital part of interferometer signal recording module. During Globus-M2 experiments, the possibility of the plasma electron density control using a dispersion interferometer was demonstrated.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1311 - 1320"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309541","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 Theoretical Study of Nonlinear Electron Temperature Transport in Inertial Confinement Fusion 惯性约束聚变中非线性电子温度输运的理论研究

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26600301

A. Mohammadian Pourtalari

{"title":"A Theoretical Study of Nonlinear Electron Temperature Transport in Inertial Confinement Fusion","authors":"A. Mohammadian Pourtalari","doi":"10.1134/S1063780X26600301","DOIUrl":"10.1134/S1063780X26600301","url":null,"abstract":"This work presents an analytical approach toward in understanding nonlinear electron temperature transport during the hot-spot formation phase of inertial confinement fusion (ICF), and providing exact analytical solutions for the nonlinear heat conduction equation that governs electron thermal transport in fusion plasmas. It is important to emphasize that the present model is a reduced theoretical framework that isolates nonlinear electron temperature transport as a sub-process of hot-spot formation. By employing self-similar solutions, the expressions for the spatiotemporal evolution of electron temperature, the propagation dynamics of the spherical thermal wave front and the waiting-time phenomenon characterizing the initial stationary phase of heat front evolution is derived. The solution incorporates the Spitzer–Harm temperature-dependent conductivity scaling and satisfies energy conservation with finite initial temperature at the boundary, overcoming limitations of previous similarity solutions that predicted unphysical singularities. Key innovations include the derivation of exact expressions for the waiting time (confinement time), the heat front position, and the electron temperature decay in spherical convergence geometry. Our results should be viewed as ideal limiting cases that provide insight into the nonlinear diffusion process in the absence of geometric and material complexities.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1370 - 1380"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309529","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

Spherical Focusing of a Short Dipole Pulse 短偶极脉冲的球面聚焦

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601598

I. I. Metelskii, V. F. Kovalev, V. Yu. Bychenkov

引用次数: 0

On Dust Fractions of Various Compositions under the Conditions of Formation of a Dusty Plasma System near the Nucleus of a Comet 在彗核附近尘埃等离子体系统形成条件下不同成分的尘埃组分

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601653

S. I. Popel, A. P. Golub’, L. M. Zelenyi

{"title":"On Dust Fractions of Various Compositions under the Conditions of Formation of a Dusty Plasma System near the Nucleus of a Comet","authors":"S. I. Popel, A. P. Golub’, L. M. Zelenyi","doi":"10.1134/S1063780X26601653","DOIUrl":"10.1134/S1063780X26601653","url":null,"abstract":"In a situation where dusty plasma can form in the vicinity of a comet’s nucleus, the influence of the dust composition at the surface of the nucleus on the plasma parameters, as well as on the composition of dust in the coma and tail of the comet, is considered. The cases of silicate and ice dust particles are discussed. It is shown that the influence of electrostatic effects in relation to the effects caused by the force of entrainment of a dust particle by a gas flow is weaker for ice particles than for silicate particles. Accordingly, the importance of ice particles in dusty plasma in the vicinity of comets, compared to silicate particles, becomes apparent at greater distances from the Sun. Furthermore, ice particles rising to certain heights are larger than silicate particles rising to the same heights. Accordingly, ice particles accumulate greater charges than silicate particles. For a comet with parameters of the nucleus close to those of comet 67P/Churyumov–Gerasimenko, the proportion of dust particles carried away by the gas flow from the cometary nucleus relative to their number on the surface of the cometary nucleus does not exceed a value of about 10%. In this case, the proportion of carried away ice dust particles relative to the number of ice dust particles on the cometary nucleus, and, accordingly, included in the composition of the comet’s dust coma and cometary tail, turns out to be several times greater than the proportion of carried away silicate dust relative to the number of silicate dust particles on the cometary nucleus.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1352 - 1360"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X26601653.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309542","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

Non-Diffusion Transport in Induction-Free Magnetic Traps and Comparison of Approaches to Its Description 无感应磁阱中的非扩散输运及其描述方法的比较

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X2660074X

Dmitriy Vasilkov, Nina Skvortsova, Nikolay Kharchev

引用次数: 0

On the Applicability of the Local Approximation for the EEDF in Modeling Surface Barrier Discharges and Volume Streamers 局部逼近法在模拟表面阻挡放电和体积流中的适用性

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601318

Yu. S. Akishev, N. A. Dyatko, I. V. Kochetov, A. V. Petryakov, V. R. Soloviev, Cheng Zhang

引用次数: 0

Two Models of Fast Streamer Discharge in a Thundercloud 雷云中快速流光放电的两种模式

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26600830

I. M. Kutsyk, E. I. Bochkov

{"title":"Two Models of Fast Streamer Discharge in a Thundercloud","authors":"I. M. Kutsyk, E. I. Bochkov","doi":"10.1134/S1063780X26600830","DOIUrl":"10.1134/S1063780X26600830","url":null,"abstract":"Two variants of the mechanism of fast streamer discharge in a thundercloud are considered: an avalanche of streamers and a streamerization wave. In both cases, polarization of the medium is assumed as a result of the creation and branching of streamers. In the first case, the discharge speed is determined by the speed of movement of streamers in the field at the front, and in the second case, by the speed of the wave initiating streamer flashes by the electric field of the polarization wave. The second mechanism is based on the assumptions of small-scale inhomogeneity of the field and the initiation of streamers from large hydrometeors by seed electrons arising as a result of plasma-chemical reactions of detachment from negative ions. The analysis conducted showed the irreparable shortcomings of the first mechanism. The proposed wave mechanism allows us to explain the results of observations of a fast streamer discharge under various conditions. This mechanism predicts two types of fast discharges involving streamers, initiated either by seed electrons generated by extensive air showers (EAS) or by changes in the electric field during the movement of the leader in the intracloud discharge.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1408 - 1418"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309672","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

Kinetic Scheme of a Subthreshold Microwave Microsecond Discharge in a Nitrogen–Oxygen Mixture Considering Oscillatory Kinetics 考虑振荡动力学的亚阈值微波微秒放电氮氧混合物动力学方案

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601045

Z. A. Zakletskii

{"title":"Kinetic Scheme of a Subthreshold Microwave Microsecond Discharge in a Nitrogen–Oxygen Mixture Considering Oscillatory Kinetics","authors":"Z. A. Zakletskii","doi":"10.1134/S1063780X26601045","DOIUrl":"10.1134/S1063780X26601045","url":null,"abstract":"A study was conducted of plasma-chemical kinetics in the spatial diffusion zone of a subthreshold microwave discharge in air at atmospheric pressure, initiated by microwave radiation with a frequency of 75 GHz and a field strength of 2.4 kV/cm. The calculation model is based on an extended kinetic scheme that takes into account in detail the level-by-level VV and VT transitions with nitrogen and oxygen molecules. It is shown that under conditions of room temperature (300 K) and microsecond pulses, the contribution of vibrational excitation to the overall plasma dynamics is negligible. On the contrary, in the high-temperature regime (~5000 K) at an electron density of 8 × 1013 cm−3 oscillatory kinetics becomes decisive. It was established that the generation of nitric oxide under these conditions is limited by the Zeldovich mechanism, and the population of the reacting molecules obeys a distribution close to the Boltzmann one. The reliability of the model is confirmed by the coincidence of the calculated NO content in the afterglow (1018 cm−3) with independent experimental data.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 10","pages":"1393 - 1407"},"PeriodicalIF":1.0,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X26601045.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149309538","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

On Nonlinear Wave Structures in Plasma Containing Electrons, Ions, Positrons, and Dust Particles with Variable Charges 含电子、离子、正电子和带可变电荷尘埃粒子的等离子体中的非线性波结构

IF 1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-11-01 DOI: 10.1134/S1063780X26601239

Yu. N. Izvekova, S. I. Popel, O. Ya. Izvekov

引用次数: 0