Plasma Physics Reports最新文献_第9页

Dust Acoustic Solitary Waves in a Magnetized Dusty Plasma with Low and High Temperatures for Both 低温和高温磁化尘埃等离子体中的尘埃声孤波

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X23601232

R. B. Kian, M. H. Mahdieh

引用次数: 0

Laser Diagnostics of Content of Hydrogen Isotopes in the Globus-M2 Tokamak Wall 对 Globus-M2 托卡马克壁中氢同位素含量的激光诊断

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600853

A. G. Razdobarin, O. S. Medvedev, I. M. Bukreev, D. L. Bogachev, A. M. Dmitriev, D. I. Elets, E. V. Smirnova, L. A. Snigirev, V. B. Minaev, A. N. Novokhatsky, I. V. Miroshnikov, S. V. Filippov, M. V. Grishaev, Yu. M. Gasparyan

{"title":"Laser Diagnostics of Content of Hydrogen Isotopes in the Globus-M2 Tokamak Wall","authors":"A. G. Razdobarin, O. S. Medvedev, I. M. Bukreev, D. L. Bogachev, A. M. Dmitriev, D. I. Elets, E. V. Smirnova, L. A. Snigirev, V. B. Minaev, A. N. Novokhatsky, I. V. Miroshnikov, S. V. Filippov, M. V. Grishaev, Yu. M. Gasparyan","doi":"10.1134/S1063780X24600853","DOIUrl":"10.1134/S1063780X24600853","url":null,"abstract":"Mock-up of the system for remote monitoring of the accumulation of hydrogen isotopes in the walls of the Globus-M2 tokamak was assembled and tested. The measurements were performed using the LIA-QMS laser diagnostics (laser-induced ablation with registration using quadrupole mass-spectrometry). The data were obtained on the content of hydrogen isotopes in deposits appearing after exposing tungsten collectors to the loads in the volume of the Globus M tokamak. After testing the diagnostics under laboratory conditions, it was mounted at the Globus-M2 facility. In-situ measurements of the content of hydrogen isotopes in the graphite tiles of the tokamak divertor were performed. The possibility of combining the L-IA‑QMS diagnostics with the LIBS (laser-induced emission spectroscopy) diagnostics has been confirmed, in order to obtain information on the composition of the ablated material. In addition, the LIBS method was used for obtaining the deuterium/protium isotopic ratio during measurements in the Globus-M2 facility.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 6","pages":"667 - 677"},"PeriodicalIF":0.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868556","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 Dynamics of XUV Plasma Emission in a Low-Inductance Vacuum Spark at the Initial Stage of Discharge Development 放电发展初期低电感真空火花中的 XUV 等离子体发射动力学

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600610

P. S. Antsiferov, L. V. Stepanov, N. D. Matyukhin

引用次数: 0

Large-Scale Hydrodynamic Flows in Media with Variable Thermodynamic Characteristics 热力学特性可变介质中的大规模流体力学流动

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600865

M. A. Yudenkova, D. A. Klimachkov, A. S. Petrosyan

{"title":"Large-Scale Hydrodynamic Flows in Media with Variable Thermodynamic Characteristics","authors":"M. A. Yudenkova, D. A. Klimachkov, A. S. Petrosyan","doi":"10.1134/S1063780X24600865","DOIUrl":"10.1134/S1063780X24600865","url":null,"abstract":"A theory of large-scale flows in a rotating astrophysical plasma under conditions of non-trivial properties of the physical medium, which are not described by the classical hydrodynamic theory of plasma, is developed. As a first step, the theory is developed within a neutral fluid model to describe astrophysical plasma, with a subsequent generalization in mind to take into account magnetic effects. Such a model is of independent importance for studying turbulent dynamo in star-forming regions in galaxies and hydrodynamic instabilities in poorly ionized disks, for describing meridional flows below convective zones in low-mass stars and on the Sun, as well as for studying oscillations of the Sun and stars. Therefore, the results obtained have a wider application, e.g., for describing geophysical currents. The theory is based on two key ideas developed in plasma astrophysics: the use of a shallow water model with large-scale compressibility and the use of a two-layer shallow water model. Equations for two-layer shallow water are derived taking into account rotation and the effect of flow sphericity on rotation, in which the effects of large-scale compressibility are taken into account in the upper layer. For a rotating system, dispersion relations are obtained for Poincaré waves in two-layer shallow water, taking into account large-scale compressibility; similar dispersion relations for Poincaré waves are obtained in the high-frequency limit taking into account the effect of sphericity on rotation; in the low-frequency limit, a dispersion relation is obtained for Rossby waves. It is shown that the dispersion relations for Poincaré waves, taking into account the sphericity of the flow, have a qualitatively different form, which leads to three-wave interactions of Poincaré waves and the interaction of two Poincaré waves with a Rossby wave, which are not observed in a single-layer flow of a compressible fluid. All types of three-wave interactions for the flows under consideration are studied using the method of multiscale expansions.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 6","pages":"724 - 741"},"PeriodicalIF":0.9,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141868560","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 Coefficient of Nonlinear Coupling of Two Electromagnetic Waves with Ordinary Polarization and a Longitudinal Upper Hybrid Wave in a High-Temperature Plasma 论高温等离子体中两种普通极化电磁波和一种纵向上混合波的非线性耦合系数

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600671

A. Yu. Popov, P. V. Tretinnikov, E. Z. Gusakov, L. V. Simonchik

引用次数: 0

The Impact of Warm Dense Plasma Environments on 2p → 1s Transition of Core-Hole Mg7+ Ions 暖致密等离子体环境对核孔 Mg7+ 离子 2p → 1s 转变的影响

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X23601992

X. F. Li, P. F. Cao

引用次数: 0

Determination of Plasma Flow Velocity with Time Resolution Based on the Doppler Effect 基于多普勒效应的具有时间分辨率的等离子体流速测定

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-30 DOI: 10.1134/S1063780X24600634

A. D. Yaroshevskaya, K. M. Gutorov, V. L. Podkovyrov, Yu. I. Litvinenko

引用次数: 0

Effect of Energy Anisotropy on Ordinary Mode in Relativistic Regime 相对论状态下能量各向异性对普通模式的影响

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-07-10 DOI: 10.1134/S1063780X23601153

N. Noreen, S. Zaheer, N. Rubab, H. A. Shah

引用次数: 0

Application of Multi-Frequency Doppler Backscattering for Studying Edge Localized Modes at the Globus-M2 Tokamak 应用多频多普勒反向散射研究 Globus-M2 托卡马克的边缘局部模式

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-06-25 DOI: 10.1134/S1063780X24600518

A. Yu. Tokarev, A. Yu. Yashin, A. M. Ponomarenko, V. K. Gusev, N. S. Zhiltsov, G. S. Kurskiev, V. B. Minaev, Yu. V. Petrov, N. V. Sakharov, V. V. Solokha, V. A. Velizhanin

{"title":"Application of Multi-Frequency Doppler Backscattering for Studying Edge Localized Modes at the Globus-M2 Tokamak","authors":"A. Yu. Tokarev, A. Yu. Yashin, A. M. Ponomarenko, V. K. Gusev, N. S. Zhiltsov, G. S. Kurskiev, V. B. Minaev, Yu. V. Petrov, N. V. Sakharov, V. V. Solokha, V. A. Velizhanin","doi":"10.1134/S1063780X24600518","DOIUrl":"10.1134/S1063780X24600518","url":null,"abstract":"The high-confinement mode in tokamaks (H-mode) is characterized by high pressure gradients at plasma edge, which results in the appearance of edge localized modes (ELMs). They are studied at the Globus-M2 spherical tokamak too, where edge localized modes are observed mainly in regimes with neutral beam injection. One of the ways for studying ELMs is the use of the Doppler backscattering (DBS) diagnostics installed at Globus-M2. It makes possible to estimate the amplitude of plasma density fluctuations and measure the radial electric field Er. In this work, the effect of edge localized modes on the Er field is studied in the radial range 0.4 < ρ < 1.1. It is shown that during ELMs the electric field increases in the entire measurement range. This indicates that ELMs affect the inner plasma regions as well. This is not consistent with the general ideas concerning the peripheral localization of ELMs, but is confirmed experimentally not only at Globus-M2. In addition, the results for the regime with ELMs are compared with those for the regime with limit cycle oscillations (LCOs) and it is shown that during LCOs such effect is not observed.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 5","pages":"541 - 551"},"PeriodicalIF":0.9,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505486","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

Increase in Power of Radiation and Specific Concentration of Energy of Plasma of the High-Current Z-Pinches due to Compression of the Cascade Wire Arrays Interacting via Magnetic Field 通过磁场相互作用的级联导线阵列压缩导致的大电流 Z 形针等离子体辐射功率和特定能量浓度的增加

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-06-25 DOI: 10.1134/S1063780X24600580

G. S. Volkov, E. V. Grabovskii, A. N. Gritsuk, K. N. Mitrofanov, A. A. Rupasov, I. N. Frolov

{"title":"Increase in Power of Radiation and Specific Concentration of Energy of Plasma of the High-Current Z-Pinches due to Compression of the Cascade Wire Arrays Interacting via Magnetic Field","authors":"G. S. Volkov, E. V. Grabovskii, A. N. Gritsuk, K. N. Mitrofanov, A. A. Rupasov, I. N. Frolov","doi":"10.1134/S1063780X24600580","DOIUrl":"10.1134/S1063780X24600580","url":null,"abstract":"Experiments on compression of cascade tungsten wire arrays with reduced inductance at the final stage of pinching aimed at increasing the specific concentration of plasma energy of the high-current Z‑pinches were carried out. The experiments were conducted at the Angara-5-1 facility at load current of up to 4 MA. The highest radiation power per unit pinch length were obtained using the cascade wire arrays in which mass per unit length of the inner wire array with reduced inductance was in the range between 1 and 1.5 that of the outer wire array. The soft X-ray radiation power of P ~ 11 TW was obtained from the 1-cm-long pinch. The specific yield of the soft X-ray radiation was in the range of 130–140 kJ/cm. The total and specific powers of the pinch radiation obtained upon compression of the cascade load with reduced inductance exceeded the total and specific powers of the pinch radiation obtained by compression of a “standard” wire array with a length of 1.6 cm with the same parameters (7–8 TW and 5 TW/cm, respectively). The yield of the soft X-ray radiation did not change upon reduction in the length of the emitting pinch from 1.6 to 0.6 cm. The compression dynamics of such a load is indicative of an increased role played by the magnetic field of the current flowing in the inner cascade in interaction of the cascades. A variant of using interaction of the cascade-array shells via the magnetic field of the inner-cascade current as applied to the scheme of the statistical “hohlraum” with indirect irradiation of spherical targets is proposed. The scheme enables entrainment of part of the current by the inner wire array that confines the statistical “hohlraum.” In this case, interaction of cascades allows using nearly entire kinetic energy of the accelerated outer shell for generation of radiation in the statistical “hohlraum” by two forming near-electrode pinches.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 5","pages":"573 - 587"},"PeriodicalIF":0.9,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141513584","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