Plasma Physics Reports最新文献

Radiative Continuum of Molecular Hydrogen in a Diffuse Pulse-Periodic Discharge in Low-Pressure Humid Air 低压潮湿空气中扩散脉冲周期放电中氢分子的辐射连续谱

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X2560447X

V. F. Tarasenko, N. A. Popov, E. Kh. Baksht, A. N. Panchenko

{"title":"Radiative Continuum of Molecular Hydrogen in a Diffuse Pulse-Periodic Discharge in Low-Pressure Humid Air","authors":"V. F. Tarasenko, N. A. Popov, E. Kh. Baksht, A. N. Panchenko","doi":"10.1134/S1063780X2560447X","DOIUrl":"10.1134/S1063780X2560447X","url":null,"abstract":"Broadband radiative continuum of low-temperature plasma is observed upon excitation by various types of discharges and electron beams of inert gases, hydrogen, deuterium, their mixtures, and mixtures of inert gases with halogens. This work demonstrates experimentally that upon excitation of humid air by a pulse-periodic streamer discharge with low specific powers, the plasma color changes from red, corresponding to the emission of 1+ nitrogen system, to white. This phenomenon was recorded with decreasing pressure and increasing discharge current density. It was found that a broadband continuum appears in the emission spectrum, which was attributed to ({{a}^{3}}Sigma _{{text{g}}}^{ + }) → ({{b}^{3}}Sigma _{{text{u}}}^{ + }) electronic transitions between bound and repulsive terms of molecular hydrogen. We present data on the influence of the relative air humidity, voltage pulse duration, and discharge current density on the emission spectra and color of plasma radiation. The kinetic processes determining the mechanism of molecular and atomic hydrogen production under these conditions are analyzed.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"208 - 216"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686538","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

Analysis of Zeff during H-Mode Regime in the Globus-M2 Tokamak Globus-M2托卡马克h模区Zeff分析

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604298

E. A. Tukhmeneva, S. Yu. Tolstyakov, E. E. Mukhin, G. S. Kurskiev, I. V. Miroshnikov, N. V. Sakharov, V. K. Gusev, V. B. Minaev, Yu. V. Petrov, N. N. Bakharev, N. V. Ermakov, E. O. Kiselev, N. S. Zhiltsov, I. M. Balachenkov, V. I. Varfolomeev, A. N. Novokhatsky, O. M. Skrekel, V. A. Solovei, V. V. Solokha, A. Yu. Telnova, E. E. Tkachenko, V. A. Tokarev, N. A. Khromov, K. D. Shulyatiev, P. B. Shchegolev

{"title":"Analysis of Zeff during H-Mode Regime in the Globus-M2 Tokamak","authors":"E. A. Tukhmeneva, S. Yu. Tolstyakov, E. E. Mukhin, G. S. Kurskiev, I. V. Miroshnikov, N. V. Sakharov, V. K. Gusev, V. B. Minaev, Yu. V. Petrov, N. N. Bakharev, N. V. Ermakov, E. O. Kiselev, N. S. Zhiltsov, I. M. Balachenkov, V. I. Varfolomeev, A. N. Novokhatsky, O. M. Skrekel, V. A. Solovei, V. V. Solokha, A. Yu. Telnova, E. E. Tkachenko, V. A. Tokarev, N. A. Khromov, K. D. Shulyatiev, P. B. Shchegolev","doi":"10.1134/S1063780X25604298","DOIUrl":"10.1134/S1063780X25604298","url":null,"abstract":"The current configuration of effective ion charge diagnostics at the Globus-M2 facility is described, as well as the results of measuring the (leftlangle {{{Z}_{{operatorname{eff} }}}} rightrangle ) chord-average effective ion charge in a wide range of plasma discharge parameters, both in the ohmic heating regime and the regime with additional heating by neutral particle beams. It was ascertained that under the Globus-M2 conditions, boronization makes it possible to reduce the (leftlangle {{{Z}_{{operatorname{eff} }}}} rightrangle ) charge by 35%. The effect of impurity accumulation in the main plasma volume in the H-mode was confirmed. In shots with desynchronized low-intensity edge localized modes (ELMs), the plasma interaction with plasma-facing materials, including that of the tokamak divertor plates, weakly affects (leftlangle {{{Z}_{{operatorname{eff} }}}} rightrangle ). In the case of development of the ELMs synchronized with the sawtooth oscillations, the (leftlangle {{{Z}_{{operatorname{eff} }}}} rightrangle ) charge considerably increased by a factor of 1.1–3.0, as compared to that in the L-mode.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"151 - 161"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686652","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 the Streamer Propagation in a Small Region with Monte Carlo Photoionization 用蒙特卡洛光离模拟小区域内的光流传播

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X26600015

F. K. Gasratov, I. S. Baidin, A. V. Oginov

{"title":"Simulation of the Streamer Propagation in a Small Region with Monte Carlo Photoionization","authors":"F. K. Gasratov, I. S. Baidin, A. V. Oginov","doi":"10.1134/S1063780X26600015","DOIUrl":"10.1134/S1063780X26600015","url":null,"abstract":"The results of a centimeter-scale study of the streamer development in air are presented. The numerical simulation is performed using the open-source Afivo-streamer code. Photoionization, which significantly contributes to streamer branching, is taken into account using a Monte Carlo approach. The pressure varies in the range of 500–1000 mbar, and the background electric field is 6–15 kV/cm. The streamer development dynamics is studied for a single seed and two spatially separated seeds located parallel to each other with a vertical offset. Electron density distributions show that the increase in pressure and background field leads to rapid and complex branching, increase in the electron density in streamer channels, and merging of adjacent structures. The distributions of the ({text{N}}_{2}^{ + }) ion density, electric field are plotted for the case with two seeds, and cross slices are performed in the region of channel merging. This has made it possible to establish that the electron density maxima correspond to the electric field minima. The simulation results are consistent with experimental data obtained for an extended high-voltage atmospheric discharge.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"198 - 207"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686537","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

First Experiments with Ion Cyclotron Heating at the Spherical Tokamak Globus-M2 球形托卡马克Globus-M2上离子回旋加速器加热的首次实验

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604249

V. V. Solokha, V. V. Dyachenko, A. S. Mareev, A. D. Gurchenko, E. Z. Gusakov, P. V. Tretinnikov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, V. K. Gusev, N. S. Zhiltsov, E. O. Kiselev, G. S. Kurskiev, A. D. Melnik, V. B. Minaev, I. V. Miroshnikov, A. N. Novokhatsky, Yu. V. Petrov, N. V. Sakharov, O. M. Skrekel, A. Yu. Telnova, E. E. Tkachenko, E. A. Tukhmeneva, S. V. Filippov, F. V. Chernyshev, K. D. Shulyatiev, P. B. Shchegolev

{"title":"First Experiments with Ion Cyclotron Heating at the Spherical Tokamak Globus-M2","authors":"V. V. Solokha, V. V. Dyachenko, A. S. Mareev, A. D. Gurchenko, E. Z. Gusakov, P. V. Tretinnikov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, V. K. Gusev, N. S. Zhiltsov, E. O. Kiselev, G. S. Kurskiev, A. D. Melnik, V. B. Minaev, I. V. Miroshnikov, A. N. Novokhatsky, Yu. V. Petrov, N. V. Sakharov, O. M. Skrekel, A. Yu. Telnova, E. E. Tkachenko, E. A. Tukhmeneva, S. V. Filippov, F. V. Chernyshev, K. D. Shulyatiev, P. B. Shchegolev","doi":"10.1134/S1063780X25604249","DOIUrl":"10.1134/S1063780X25604249","url":null,"abstract":"On the Globus-M2 spherical tokamak, experiments on ion cyclotron resonance heating (ICRH) of plasma were conducted in discharges with a toroidal magnetic field above 0.7 T under conditions of Ohmic-only heating and additional heating by a neutral beam injector to study the effect of ICRH on the energy distribution of plasma components. The RF heating was performed in the frequency range of 5 to 12 MHz with a power of up to 0.1 MW. The experiments demonstrated the generation of fast particles. In discharges with RF heating in a regime with two ion species (D, H), ions with energies exceeding 20 ion temperatures (up to 22.5 keV) were observed. A 50% increase in hydrogen ion temperature and a 15% increase in deuterium ion temperature were observed. RF heating in deuterium discharges with neutral beam injection increased the population of fast particles with energies above the injection energy by up to a factor of 10. When RF heating was applied in a regime with three ion species (H, D, 3He), a 15% increase in electron temperature was observed near the spatial localization of the fundamental helium-3 resonance at an ICRH frequency of 5.7 MHz.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"139 - 150"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686651","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 First SOLPS-ITER3.2.0 Wide Grid Modeling of TRT Edge Plasma TRT边缘等离子体的首个SOLPS-ITER3.2.0宽网格模型

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604523

N. V. Shtyrkhunov, E. G. Kaveeva, V. A. Rozhansky, I. Yu. Senichenkov, K. A. Kukushkin, E. O. Kiselev

引用次数: 0

Asymmetric Equilibrium Structures of Superthin Current Sheets: The Asymmetry of Plasma Sources 超薄电流片的不对称平衡结构：等离子体源的不对称

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604250

O. O. Tsareva, H. V. Malova, V. Yu. Popov, L. M. Zelenyi

引用次数: 0

Numerical Simulation of Lean Propane–Air Mixture Conversion Initiated by a Pulsed-Periodic Nanosecond Discharge 脉冲周期纳秒放电引发贫丙烷-空气混合气转化的数值模拟

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X2560450X

A. N. Bocharov, E. A. Filimonova

{"title":"Numerical Simulation of Lean Propane–Air Mixture Conversion Initiated by a Pulsed-Periodic Nanosecond Discharge","authors":"A. N. Bocharov, E. A. Filimonova","doi":"10.1134/S1063780X2560450X","DOIUrl":"10.1134/S1063780X2560450X","url":null,"abstract":"Conversion of a propane−air mixture with fuel content below or near the lower flammability limit has been examined. Conversion is initiated by a nanosecond pulsed-periodic discharge with a pulse repetition rate of 2.5 MHz. In a one-dimensional approximation, the evolution of the mixture composition along the discharge channel radius is studied as a function of pressure (at the same current amplitude), fuel content in the mixture, discharge duration (total energy input), and the duration of the relaxation phase after the discharge ends. The simulation results revealed individual stages of the interaction between the discharge plasma and the lean fuel mixture, demonstrating positive effects, such as the production of conversion products C2H4, C3H6, H2, CO, NO, etc. at an early stage due to the formation of radicals in an electric field of E/N = 100–300 Td, and negative effects, which lead to the complete combustion of intermediate hydrocarbons and the formation of high CO and CO2 concentrations during prolonged operation of the discharge.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"217 - 223"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686539","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

Machine Learning (ML) Modelling and Characterization of Atmospheric Pressure Plasma Jet (APPJ) of Argon 氩气大气压等离子体射流（APPJ）的机器学习（ML）建模与表征

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604171

S. Patil, V. M. Shelar, R. Asharaf, A. S. Deepak

{"title":"Machine Learning (ML) Modelling and Characterization of Atmospheric Pressure Plasma Jet (APPJ) of Argon","authors":"S. Patil, V. M. Shelar, R. Asharaf, A. S. Deepak","doi":"10.1134/S1063780X25604171","DOIUrl":"10.1134/S1063780X25604171","url":null,"abstract":"Plasma, characterized by partially ionized gas containing reactive species, has become indispensable for advanced surface modification and biomedical applications. Argon-based non-thermal atmospheric pressure plasma jets (APPJs) enable precise material processing through controlled generation and efficient production of reactive species. This experimental and computational study characterizes an argon-based atmospheric pressure plasma jet generated in a narrow 2 mm quartz capillary. The discharge was initiated using a resonant transformer circuit. High-resolution optical emission spectroscopy measurements were performed under controlled gas flow conditions at 850–900 mbar. Extensive spectral data collection enabled detailed statistical analysis. The spectra exhibit intense neutral argon lines, ionized argon signatures, and nitrogen molecular bands from ambient air entrainment. Quantitative analysis revealed a direct correlation between applied voltage and Ar I line intensities, while gas flow rate variations produced complex non-monotonic intensity patterns. Electron temperatures of 5400–5800 K were determined using Boltzmann plot methodology. Stark broadening measurements of the 763.51 nm line yielded electron densities of (1.30‒1.33) × 1017 cm–3. A probabilistic machine learning approach employing Bayesian neural networks demonstrated outstanding predictive performance for estimating plasma parameters from operational variables, with remarkably low associated uncertainties. This integrated diagnostic framework provides new insights into plasma parameter relationships while offering practical tools for optimizing plasma-assisted surface treatments and chemical processes and the developed algorithms will be used to determine the parameters.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"224 - 233"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686642","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

Formation of Dusty Plasma in the Vicinity of Comet 67P/Churyumov–Gerasimenko 67P/ Churyumov-Gerasimenko彗星附近尘埃等离子体的形成

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604195

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

{"title":"Formation of Dusty Plasma in the Vicinity of Comet 67P/Churyumov–Gerasimenko","authors":"S. I. Popel, A. P. Golub’, L. M. Zelenyi","doi":"10.1134/S1063780X25604195","DOIUrl":"10.1134/S1063780X25604195","url":null,"abstract":"Plasma–dust processes for a comet with nucleus parameters close to those of the comet 67P/Churyumov–Gerasimenko nucleus are analyzed. The distribution functions of photoelectrons, altitude dependences of electric fields, as well as charges and sizes of dust particles, are determined using a physicomathematical model that allows for a consistent description of concentrations of photoelectrons and dust particles above the illuminated part of the comet nucleus. It is demonstrated that plasma–dust processes reveal themselves distinctly when the distance from the comet to the Sun is at least ~5 AU. In this case, dusty plasma in the vicinity of the nucleus of a comet with parameters close to those of the comet 67P/Churyumov–Gerasimenko nucleus is formed due to electrostatic interactions, i.e., similar to the formation of dusty plasma near atmosphereless celestial bodies, such as the Moon, Mercury, and asteroids. On the contrary, if a comet is closer to the Sun, the dust-particle dynamics is determined by the gas outflow from the comet nucleus. The albedo of the comet nucleus represents an important factor influencing the formation of dusty plasma in the vicinity of the nucleus. Comet 67P/Churyumov–Gerasimenko is characterized by a relatively low albedo. As a result, dusty plasma formed due to electrostatic interactions in the vicinity of its nucleus can be observed only in a short segment of its orbit close to aphelion. Had the albedo been an order of magnitude higher, the influence of the plasma-dust processes would have to be taken into consideration in a substantially wider range of comet distances from the Sun.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 2","pages":"186 - 197"},"PeriodicalIF":1.1,"publicationDate":"2026-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686654","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

Electron Cyclotron Emission Diagnostics from the Low Field Side at the T-15MD Tokamak: Concept and Estimates of Operational Limits T-15MD托卡马克低场侧电子回旋辐射诊断：操作极限的概念和估计

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-04-16 DOI: 10.1134/S1063780X25604493

N. A. Solovev, D. A. Shelukhin

引用次数: 0