Plasma Physics Reports最新文献_第9页

Options for Implementation of IR Thermography Diagnostics in a Tokamak with Reactor Technologies TRT 利用反应堆技术 TRT 在托卡马克中实施红外热成像诊断的备选方案

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-06-04 DOI: 10.1134/S1063780X2460035X

A. G. Razdobarin, Ya. R. Shubin, D. L. Bogachev, D. I. Elets, O. S. Medvedev, E. E. Mukhin, L. A. Snigirev

引用次数: 0

Study of the Method of Photon Neutralization of Powerful Beams of Negative Ions at the Budker Institute of Nuclear Physics 在布德克核物理研究所研究强大负离子束的光子中和方法

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-06-04 DOI: 10.1134/S1063780X24600233

S. S. Popov, M. G. Atlukhanov, A. V. Burdakov, A. A. Ivanov, V. V. Kurkuchekov, A. L. Sanin, D. I. Skovorodin, Yu. A. Trunev, I. V. Shikhovtsev

引用次数: 0

The Concept of the MSE Diagnostic at the TRT Tokamak Facility TRT 托卡马克设施的 MSE 诊断概念

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-06-04 DOI: 10.1134/S1063780X24600130

I. A. Zemtsov, V. S. Neverov, A. R. Nemets, V. A. Krupin, A. A. Pshenov, V. I. Davydenko, N. V. Stupishin

{"title":"The Concept of the MSE Diagnostic at the TRT Tokamak Facility","authors":"I. A. Zemtsov, V. S. Neverov, A. R. Nemets, V. A. Krupin, A. A. Pshenov, V. I. Davydenko, N. V. Stupishin","doi":"10.1134/S1063780X24600130","DOIUrl":"10.1134/S1063780X24600130","url":null,"abstract":"The possibility of carrying out measurements of plasma parameters in a tokamak with reactor technologies (TRT) by means of the technique based on the Stark effect by resolving the spectrum of the split lines of Balmer series emitted by fast hydrogen atoms injected into plasma is analyzed. The code containing the models of emission applicable for the high-temperature tokamak plasma, along with the library of functions for the ray-tracing simulation of geometric optics, was used. Simulation of spectra of active neutral beam emission and plasma emission, both as a result of charge exchange on beam atoms and passive one, taking into account reflections from the plasma facing vessel elements, allowed determining parameters of the diagnostic injector and relative position of the light-collection systems and heating injectors for which the useful and background spectra could be separated. The signal gathered by the detector is simulated. The shape of the visual angle along the line of sight, optical properties of the lens materials, the instrumental function of the spectral device, the sensor characteristics, and statistical noise of the signal are taken into consideration. Based on the obtained results, a preliminary concept of the motional Stark effect (MSE) diagnostic for the tokamak with reactor technologies is proposed.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 4","pages":"470 - 492"},"PeriodicalIF":0.9,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256180","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 Frequency Spectrum and Energy Content in a Pulse Flux of Terahertz Radiation Generated by a Relativistic Electron Beam in a Plasma Column with Different Density Distributions 不同密度分布等离子体柱中相对论电子束产生的太赫兹辐射脉冲流量的频谱和能量含量

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600051

A. V. Arzhannikov, S. L. Sinitsky, D. A. Samtsov, I. V. Timofeev, E. S. Sandalov, S. S. Popov, M. G. Atlukhanov, M. A. Makarov, P. V. Kalinin, K. N. Kuklin, A. F. Rovenskikh, V. D. Stepanov

{"title":"The Frequency Spectrum and Energy Content in a Pulse Flux of Terahertz Radiation Generated by a Relativistic Electron Beam in a Plasma Column with Different Density Distributions","authors":"A. V. Arzhannikov, S. L. Sinitsky, D. A. Samtsov, I. V. Timofeev, E. S. Sandalov, S. S. Popov, M. G. Atlukhanov, M. A. Makarov, P. V. Kalinin, K. N. Kuklin, A. F. Rovenskikh, V. D. Stepanov","doi":"10.1134/S1063780X24600051","DOIUrl":"10.1134/S1063780X24600051","url":null,"abstract":"This paper reports on the generation of a directed flux of electromagnetic radiation with an energy content of 10 J in the frequency range of 0.2–0.3 THz at a microsecond pulse duration in a beam–plasma system. The flux is generated when a relativistic electron beam (REB) pumps electron plasma waves in a magnetized plasma column. In the described experiments, this fundamentally new approach to generate terahertz radiation was carried out at the GOL-PET facility in the conditions of varying the beam current density and the plasma density in the appropriate ranges of 1–2 kA/cm2 and 1014–1015 cm–3. From the comparison of the flux energy spectrum measured experimentally in the frequency range 0.15–0.45 THz with the calculated one obtained using the previously proposed model of radiation generation in a beam–plasma system it was shown that this process occurs through resonant pumping by REB of precisely the branch of upper-hybrid plasma waves. Mastering this new method to generate terahertz radiation opens the prospect of its use to obtain multi-megawatt radiation fluxes in the frequency range up to 1 terahertz and higher. For such a development approach the most promising beam for pumping plasma oscillations seems to be a kiloampere REB generated in a linear induction accelerator.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 3","pages":"331 - 341"},"PeriodicalIF":0.9,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060907","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 an Ohmic Regime in the T-15MD Tokamak Based on the Canonical Profile Transport Model 基于典型剖面传输模型模拟 T-15MD 托卡马克中的欧姆状态

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600208

N. V. Kasyanova, Yu. N. Dnestrovskij, A. V. Melnikov

引用次数: 0

Distinctive Features of Measuring Te and ne Spatial Distributions in the Globus-M2 Spherical Tokamak Using Method of Thomson Scattering of Laser Radiation 利用汤姆逊激光散射法测量 Globus-M2 球形托卡马克中 Te 和 ne 空间分布的显著特点

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600099

N. S. Zhiltsov, G. S. Kurskiev, V. A. Solovey, E. E. Tkachenko, S. Yu. Tolstyakov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, A. V. Voronin, V. K. Gusev, V. Yu. Goryainov, V. V. D’yachenko, N. V. Ermakov, A. A. Kavin, E. O. Kiselev, A. N. Konovalov, S. V. Krikunov, V. B. Minaev, A. B. Mineev, I. V. Miroshnikov, E. E. Mukhin, A. N. Novokhatsky, M. I. Patrov, Yu. V. Petrov, A. M. Ponomarenko, N. V. Sakharov, O. M. Skrekel’, V. V. Solokha, A. Yu. Telnova, V. A. Tokarev, E. A. Tukhmeneva, S. V. Filippov, N. A. Khromov, P. B. Shchegolev, K. D. Shulyatiev, A. Yu. Yashin

{"title":"Distinctive Features of Measuring Te and ne Spatial Distributions in the Globus-M2 Spherical Tokamak Using Method of Thomson Scattering of Laser Radiation","authors":"N. S. Zhiltsov, G. S. Kurskiev, V. A. Solovey, E. E. Tkachenko, S. Yu. Tolstyakov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, A. V. Voronin, V. K. Gusev, V. Yu. Goryainov, V. V. D’yachenko, N. V. Ermakov, A. A. Kavin, E. O. Kiselev, A. N. Konovalov, S. V. Krikunov, V. B. Minaev, A. B. Mineev, I. V. Miroshnikov, E. E. Mukhin, A. N. Novokhatsky, M. I. Patrov, Yu. V. Petrov, A. M. Ponomarenko, N. V. Sakharov, O. M. Skrekel’, V. V. Solokha, A. Yu. Telnova, V. A. Tokarev, E. A. Tukhmeneva, S. V. Filippov, N. A. Khromov, P. B. Shchegolev, K. D. Shulyatiev, A. Yu. Yashin","doi":"10.1134/S1063780X24600099","DOIUrl":"10.1134/S1063780X24600099","url":null,"abstract":"The results of measuring the electron temperature and density spatial distributions in plasma of the Globus-M2 tokamak using the Thomson scattering diagnostics are presented. The diagnostics provides measurements throughout the entire tokamak discharge, starting from time of gas breakdown. The Thomson scattering data were analyzed in order to determine the positions of the last closed flux surface, the plasma magnetic axis, and the radius of inversion during the saw-tooth oscillations. The results of measurements performed during the internal reconnection of magnetic field lines are presents, as well as the dynamics of spatial distributions of electron temperature, density and pressure during the plasma transition to the H-mode. The results of measuring the electron temperature distribution in the scrape-off layer using the Thomson scattering diagnostics are also presented for distances up to 4 cm outside the last closed flux surface.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 3","pages":"310 - 321"},"PeriodicalIF":0.9,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060906","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

Deposition of Thin Refractory-Metal-Films onto Glasses through Diaphragms at Plasma Focus Facility 在等离子体聚焦设备上通过隔膜在玻璃上沉积薄耐火金属膜

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600178

V. N. Kolokoltsev, V. Ya. Nikulin, P. V. Silin, I. V. Borovitskaya, E. N. Peregudova, A. I. Gaidar, L. I. Kobeleva, A. M. Mezrin, A. A. Eriskin

{"title":"Deposition of Thin Refractory-Metal-Films onto Glasses through Diaphragms at Plasma Focus Facility","authors":"V. N. Kolokoltsev, V. Ya. Nikulin, P. V. Silin, I. V. Borovitskaya, E. N. Peregudova, A. I. Gaidar, L. I. Kobeleva, A. M. Mezrin, A. A. Eriskin","doi":"10.1134/S1063780X24600178","DOIUrl":"10.1134/S1063780X24600178","url":null,"abstract":"The results of experiments are presented on the deposition onto silicate glasses of thin refractory-metal-films: molybdenum, tantalum and tungsten. The technique used for manufacturing films was based on the deposition of metal-containing plasma formed when exposing the surface of foils made of refractory metals to high-power plasma and ion pulses. For generation of such pulses, the facility of plasma focus type was used, which makes it possible to obtain ion beams and plasma flows with the energy flux density in the range of 1010–1012 W/cm2. The most intense central part of the ion-plasma flow was separated using metal di-aphragms with aperture diameters of 2.5, 3.5, and 4.5 mm. Metal Mo, Ta and W films with dimensions of ∅3–5 mm were obtained on the surfaces of glasses. Metal films are characterized by good adhesion, since they coalesce with the glass surface. It was discovered that the planarity of films becomes violated due to the drift of molten metal particles under the glass surface. The relief of films is non-uniform, which can be explained by the presence of micrometer-sized metal particles in the plasma flow.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 3","pages":"342 - 349"},"PeriodicalIF":0.9,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060908","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

Effect of the Method of Excitation of the Plasma Antenna on the Spectral Characteristics of the Radiated Signal 等离子天线的激发方法对辐射信号光谱特性的影响

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600166

N. N. Bogachev, I. L. Bogdankevich, S. E. Andreev, N. G. Gusein-zade, M. S. Usachonak

{"title":"Effect of the Method of Excitation of the Plasma Antenna on the Spectral Characteristics of the Radiated Signal","authors":"N. N. Bogachev, I. L. Bogdankevich, S. E. Andreev, N. G. Gusein-zade, M. S. Usachonak","doi":"10.1134/S1063780X24600166","DOIUrl":"10.1134/S1063780X24600166","url":null,"abstract":"The radiation of signal by the plasma asymmetrical dipole antenna is studied for two methods of its excitation. Earlier, it was shown that the 2nd and 3rd harmonics of the input signal frequency in the radiation spectrum of the plasma antenna are 10–20 dB stronger than those of a metal antenna with the same geometry. In this work, we study experimentally and by computer simulations the effect of the method of excitation of the plasma asymmetrical dipole antenna on the spectral characteristics of the signal that it radiates. For the two excitation methods of the antenna, through an electrode and through a coaxial coupler, it was shown that the strength of the signal components at the frequency of the radiated signal and its multiple harmonics is different. The introduction of the coaxial coupler in the antenna excitation scheme allowed us to improve the coupling at the input signal frequency and decrease its components at the 2nd and 3rd harmonics. For the plasma antenna with the coaxial coupler, the difference between the 1st and 2nd harmonics was increased by almost 6 dB, and between the 1st and the 3rd ones by almost 20 dB compared to the antenna excitation scheme through the electrode.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 3","pages":"373 - 379"},"PeriodicalIF":0.9,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060909","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 Main Stage of a Lightning 雷电主要阶段的数值模拟

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600117

A. N. Bocharov, E. A. Mareev, N. A. Popov

{"title":"Numerical Simulation of the Main Stage of a Lightning","authors":"A. N. Bocharov, E. A. Mareev, N. A. Popov","doi":"10.1134/S1063780X24600117","DOIUrl":"10.1134/S1063780X24600117","url":null,"abstract":"We present a numerical model of the main stage of a lightning discharge. Within the framework of the developed model, evolution of parameters of the current channel upon the return stroke (the lightning main stage) is described by the system of equations governing conservation of mass, momentum, total energy, along with the transmission-line equations for determining the electric potential and the total current in each channel cross section. The main characteristics of lightning at the stage of the return stroke detectable experimentally, such as gas heating in the channel to temperatures in the range of 10–40 kK, the fundamental possibility of propagation of the potential-gradient wave at a speed varying from several hundredth to several tenths of the speed of light, and the possibility of the return-stroke wave propagating a relatively long distance without substantial attenuation, are demonstrated numerically. The conclusion that the developed physical and numerical model of the lightning discharge describes physical processes that occur under real conditions qualitatively correctly can be drawn based on the results on simulation of lightning discharges of various intensity.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 3","pages":"380 - 387"},"PeriodicalIF":0.9,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060905","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 Microwave Discharge in High-Velocity Flows Initiated by a Half-Wave Antenna 由半波天线引发的高速流动中的微波放电

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-05-16 DOI: 10.1134/S1063780X24600129

K. N. Kornev, A. A. Logunov, O. S. Surkont, T. R. Abushaev, A. L. Volynets, S. A. Dvinin

引用次数: 0