Plasma Physics Reports最新文献_第8页

Investigation of Anti-Cancer Effect of Combined Quadruple-Electrode Plasma Device 联合四电极等离子体装置抗癌效果的研究

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X25604080

T. Ni, X. Zhao, R. Ge, X. Zhang, Jingfei Wang, Sh. Yuan, Z. Zhang, H. Guo, Ch. Zhang, D. Xu

{"title":"Investigation of Anti-Cancer Effect of Combined Quadruple-Electrode Plasma Device","authors":"T. Ni, X. Zhao, R. Ge, X. Zhang, Jingfei Wang, Sh. Yuan, Z. Zhang, H. Guo, Ch. Zhang, D. Xu","doi":"10.1134/S1063780X25604080","DOIUrl":"10.1134/S1063780X25604080","url":null,"abstract":"Cold atmospheric pressure plasma has been shown to be effective in the treatment of cancer, and in recent years there has been an increasing amount of research for plasma generating devices, the most widely used of which are the pin–ring and double-ring structures. We have combined these two conventional discharge structures and compared their discharge and anticancer effects with use of a single structure. We added a needle-ring as the first preionization layer on top of the conventional two-ring structure, and compared the discharge characteristics and anticancer effects of the double-electrode and the quadruple-electrode structures under three working gases, namely, He, He + 0.5%N2 and He + 0.5%O2. The discharge images, photoemission spectra, and H2O2 and ({text{NO}}_{2}^{ - }) concentration analyses showed that the plasma jet intensity was higher for the quadruple-electrode structure. This is attributed to the fact that the increased pre-ionization layer promotes the full ionization of the gas from top to bottom, which increases the density of charged particles in the subsequent double-loop jet, and thus enhances the strength of the discharge—the upper pin-loop discharge effectively strengthens the lower double-loop discharge. We detreated A549 cancer cells with activated water prepared by the plasma device and examined cell survival, and the results showed that cells treated with He + 0.5%N2 quadruple-electrode had a lower survival rate. In addition, apoptosis increased significantly with the duration of plasma treatment. The study suggests that a quadruple-electrode plasma jet using He + 0.5%N2 may be a novel approach for cancer treatment.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 4","pages":"485 - 498"},"PeriodicalIF":1.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061296","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

Oblique Collision of Ion Acoustic Solitons in Magnetized Pair-Ion Plasma Containing Tsallis Distributed Electrons 含Tsallis分布电子的磁化对离子等离子体中离子声孤子的斜碰撞

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X26600143

U. H. Malik, M. Khan, A. Zada, M. Kamran

{"title":"Oblique Collision of Ion Acoustic Solitons in Magnetized Pair-Ion Plasma Containing Tsallis Distributed Electrons","authors":"U. H. Malik, M. Khan, A. Zada, M. Kamran","doi":"10.1134/S1063780X26600143","DOIUrl":"10.1134/S1063780X26600143","url":null,"abstract":"Two obliquely interacting ion-acoustic solitons are studied in a magnetized electronegative plasma, characterized by Cairns–Tsallis distributed electrons. For this purpose, an extended Poincaré–Lighthill–Kuo method is employed to derive two Korteweg–de Vries equations and the corresponding phase shifts associated with the oblique interaction. The solitons’ phase shifts are found to be dependent upon the physical parameters including nonextensive and nonthermal parameters, ion-to-electron mass ratio, propagation angle, and magnetic field strength. Typical parameters for the (Ar(^{ + }), SF(_{6}^{ - })) and (Xe(^{ + }), SF(_{6}^{ - })) plasma systems are selected to investigate how the mass ratio of positive to negative ions and the density ratio of negative to positive ions influence the soliton structure and associated phase shifts. The results demonstrate that these parameters significantly influence both the phase shifts and the trajectories of the two ion-acoustic solitons. Evidently, this more realistic model is helpful for interpreting the ion-acoustic soliton waves in magnetized plasma experiments and space observations.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 4","pages":"462 - 473"},"PeriodicalIF":1.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061298","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

Quasi-Optical Simulations of Electron Cyclotron Plasma Heating at the Fundamental and Second Harmonics at the GDMT Facility GDMT设备中电子回旋加速器等离子体基次和次谐波加热的准光学模拟

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X26600337

E. D. Gospodchikov, T. A. Khusainov, A. L. Solomakhin, A. G. Shalashov

引用次数: 0

Calculation of Nonlinear Spectra of Cherenkov Instabilities of Dense Electron Beams in Electrodynamic Systems of Plasma Microwave Electronics 等离子体微波电子动力学系统中密集电子束切伦科夫不稳定性非线性谱的计算

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X2660026X

A. V. Ershov, M. V. Kuzelev

引用次数: 0

Measurements of the Spatial Distribution of Plasma Characteristics by the Langmuir Probe Method in a Hollow Cathode Discharge (Review) 用Langmuir探针法测量空心阴极放电中等离子体特性的空间分布（综述）

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X26600222

A. V. Bernatskiy, I. I. Draganov, V. N. Ochkin

引用次数: 0

Numerical Simulation of Streamer Discharge Characteristics Induced by Free Metal Particles in SF6/CO2 Gas Mixture SF6/CO2混合气体中游离金属颗粒诱导流线放电特性的数值模拟

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X25604353

Q. Bing, T. Fuyou, L. Chang, W. Hui

{"title":"Numerical Simulation of Streamer Discharge Characteristics Induced by Free Metal Particles in SF6/CO2 Gas Mixture","authors":"Q. Bing, T. Fuyou, L. Chang, W. Hui","doi":"10.1134/S1063780X25604353","DOIUrl":"10.1134/S1063780X25604353","url":null,"abstract":"Partial discharges induced by free metal particles impair the insulation performance of high-voltage electrical equipment. Owing to its environmental benefits, cost-effectiveness, and excellent dielectric properties, the SF6/CO2 gas mixture has emerged as a promising alternative for gas-insulated applications. This study establishes a two-dimensional plasma fluid model, utilizing the finite element method to self-consistently couple the current and electrostatic fields for simulating the discharge of millimeter-sized particles in an SF6/CO2 mixture at 220 kV. The results indicate that as the proportion of SF6 increases from 10 to 30%, the streamer propagation velocity decreases and the breakdown time prolongs. The streamer head exhibits a sharp rise in electric field strength and electron density. This indicates that SF6’s strong electronegativity suppresses electron avalanche development, thereby promoting the accumulation of space charge, which in turn leads to more pronounced electric field distortion. Analysis of ion distribution shows a decrease in ({text{CO}}_{2}^{ + }) density, while the densities of ({text{SF}}_{6}^{ - }) and ({text{SF}}_{5}^{ - }) increase, indicating a shift in the discharge mechanism from being dominated by CO2 ionization to a synergistic mechanism dominated by SF6 adsorption and ionization. This study achieves real-time solving of the floating potential of metal particles through multi-physics coupling and systematically elucidates the physical mechanisms of streamer initiation by particles in mixed gases with different ratios, providing a theoretical basis for the formulation of eco-friendly insulating gas mixtures and engineering insulation design.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 4","pages":"499 - 514"},"PeriodicalIF":1.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061277","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

Collisional Radiative Recombination of He++ Ions in the Decaying Plasma of a Low-Frequency Dielectric Barrier Discharge in Helium. Ion Radiation Spectrum 氦中低频介质阻挡放电等离子体中He++离子的碰撞辐射复合。离子辐射谱

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X26600441

V. A. Ivanov

引用次数: 0

Fluctuation Processes in Dusty Plasma and the Rise of Fine Dust above the Surface of the Moon 尘埃等离子体的波动过程和月球表面细小尘埃的上升

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-29 DOI: 10.1134/S1063780X26600209

S. I. Popel, A. V. Zakharov, I. A. Kuznetsov

{"title":"Fluctuation Processes in Dusty Plasma and the Rise of Fine Dust above the Surface of the Moon","authors":"S. I. Popel, A. V. Zakharov, I. A. Kuznetsov","doi":"10.1134/S1063780X26600209","DOIUrl":"10.1134/S1063780X26600209","url":null,"abstract":"The fluctuation acceleration in the lunar dusty plasma has been considered in a situation where the effects of solar radiation are not important, which occurs, e.g., during the dark time of the lunar day. Acceleration is caused by fluctuations in the charges of dust particles, which arise as a result of the discrete nature of the dust causing fluctuations in the microscopic currents of electrons and ions flowing onto the dust particles. Fluctuations in the charges of dust particles lead to an increase in the average energy of the particles and, accordingly, to their acceleration. The energy that makes possible such an increase in the energy of dust particles is associated with sources of dusty plasma, which ensure a continuous exchange of matter and energy including the participation of dust charging processes. It has been shown that in the lunar dusty plasma, fluctuation acceleration of nanoscale and submicrometer dust particles can lead to a significant increase in their speed, and for sufficiently small nanoscale particles, even to their reaching speeds exceeding the second astronautic velocity for the Moon, as a result of which such particles can leave the lunar plasma-dust system. At the same time, earlier estimates characterizing the behavior of the largest particles, which make up the dusty plasma formed by electrostatic interactions, remain valid.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 4","pages":"456 - 461"},"PeriodicalIF":1.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148061297","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

Influence of Adiabaticity on Dust-Ion-Acoustic Solitary Waves in the Presence of Q-Nonextensive Electrons and Arbitrarily Charged Dust q -非扩展电子和任意带电尘埃存在时绝热对尘埃离子声孤波的影响

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-15 DOI: 10.1134/S1063780X2660012X

R. Rifat, S. Sultana, M. M. Orani, A. Mannan, A. A. Mamun

引用次数: 0

Plasma Spectroscopy during High-Current Electric Explosions of Tungsten Wires in Vacuum 真空钨丝大电流电爆炸过程中的等离子体光谱

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2026-05-15 DOI: 10.1134/S1063780X26600040

E. G. Silkis, N. D. Pilia, D. O. Antonov, K. A. Alabin, V. N. Krasheninnikov, D. A. Tyurin, L. I. Urutskoev, N. Z. Chikovani

{"title":"Plasma Spectroscopy during High-Current Electric Explosions of Tungsten Wires in Vacuum","authors":"E. G. Silkis, N. D. Pilia, D. O. Antonov, K. A. Alabin, V. N. Krasheninnikov, D. A. Tyurin, L. I. Urutskoev, N. Z. Chikovani","doi":"10.1134/S1063780X26600040","DOIUrl":"10.1134/S1063780X26600040","url":null,"abstract":"When studying the optical spectra arising from the electrical explosion of tungsten wires in a vacuum, several thousand spectral lines of W I and W II were recorded in the range of 450–912 nm. Among these lines, 118 spectral lines that are not contained in the National Institute of Standards and Technology (NIST) line database reference were reliably and reproducibly detected. Some of these lines (57 W II lines and 6 W I lines), with a deviation of no more than 0.01 nm, coincides with the W lines contained in the calculated line database created at the University of Mons, Belgium (DESIRE). To verify the detected lines, the Vernadsky Institute of Geochemistry and Analytical Chemistry initiated a study of the spectra of tungsten plasma in an arc discharge (in an argon or helium atmosphere) in the same spectral range. A group of 57 lines, which were not identified in the NIST and DESIRE spectral databases, were observed in both electric explosion and arc discharge spectra and therefore are highly likely to belong to W.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"52 3","pages":"293 - 301"},"PeriodicalIF":1.1,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938595","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