Plasma Physics Reports最新文献_第8页

The Effect of Ion Flow Сharge Exchange on the Potential Profile in the Expander of an Open Trap 离子流Сharge交换对开阱膨胀器电位分布的影响

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-18 DOI: 10.1134/S1063780X25603608

D. I. Skovorodin

引用次数: 0

Plasma Equilibrium Configuration of Hill’s Vortex Type with n = 3 Toroidal Asymmetry n = 3环面不对称的希尔涡型等离子体平衡构型

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-18 DOI: 10.1134/S1063780X25603116

I. V. Ivanov, E. A. Sorokina

{"title":"Plasma Equilibrium Configuration of Hill’s Vortex Type with n = 3 Toroidal Asymmetry","authors":"I. V. Ivanov, E. A. Sorokina","doi":"10.1134/S1063780X25603116","DOIUrl":"10.1134/S1063780X25603116","url":null,"abstract":"A new plasma equilibrium configuration is found. It is a generalization of the known magnetohydrodynamic structure of Hill’s vortex type for the case of axial asymmetry with the toroidal wave number n = 3. The analysis is based on a solution to a system of coupled partial differential equations derived from exact equations of the three-dimensional equilibrium of static plasma (force balance) under the assumption of small asymmetry and in the absence of the main toroidal magnetic field. It is shown that the search for corrections to the basic axisymmetric equilibrium in the class of polynomials in powers of z (by analogy with Solov’ev solution) leads to an overspecified problem and requires satisfying compatibility conditions. The resulting solution contains two free coefficients that determine the amplitude of the toroidal inhomogeneity of a magnetic configuration. It also depends on the initial equilibrium parameters, namely, the elongation of magnetic surfaces in the basic configuration of a Hill’s vortex. The toroidal asymmetry of magnetic surfaces is accompanied by the appearance of a toroidal magnetic field, which can be oppositely directed and is absent in the basic vortex configuration. The shape of magnetic surfaces in (varphi = {text{const}}) cross-section differs significantly from the “axisymmetric” one. Corrections to the magnetic axis are calculated, which to ensure the sufficiency of expansion in the weak asymmetry parameter at the small gradient of (Psi ).","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 8","pages":"887 - 896"},"PeriodicalIF":1.1,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X25603116.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537847","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

Methods of Enhancing the Anti-Cancer Effect during the Simultaneous Processing of Cells by a Cold Atmospheric Plasma Jet and Gold Nanoparticles 低温大气等离子体射流和金纳米颗粒同时处理细胞增强抗癌作用的方法

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-18 DOI: 10.1134/S1063780X25603323

I. Schweigert, D. Zakrevsky, E. Milakhina, P. Guguin, M. Biryukov, A. Polyakova, E. Gorbunova, A. Epanchintseva, I. Pyshnaya, O. Koval

{"title":"Methods of Enhancing the Anti-Cancer Effect during the Simultaneous Processing of Cells by a Cold Atmospheric Plasma Jet and Gold Nanoparticles","authors":"I. Schweigert, D. Zakrevsky, E. Milakhina, P. Guguin, M. Biryukov, A. Polyakova, E. Gorbunova, A. Epanchintseva, I. Pyshnaya, O. Koval","doi":"10.1134/S1063780X25603323","DOIUrl":"10.1134/S1063780X25603323","url":null,"abstract":"Low-temperature atmospheric-pressure plasma jets, which generate a broad spectrum of reactive oxygen species and produce periodic action of electric fields are a promising tool that can be used in plasma medicine. When a cold atmosphericplasma jet (CAPJ) is applied to cancerous tumors, determining the correct dosage is crucial for optimal treatment results with minimal side effects. In this study, to optimize the CAPJ characteristics, the configuration of the electric field in the streamer propagation zone between the nozzle and the target was modified using an additional ring electrode. It was shown that the magnitude and location of maximum discharge current can be controlled, which increases the efficiency and safety of using CAPJs in medical applications. A study was conducted of the screening properties of a hydrogel applied to the skin of tumor-bearing animals during CAPJ treatment. Studies of the combined effect of gold nanoparticles and CAPJs were continued, and results showing an effective deceleration of tumor growth rates in animals after a single CAPJ treatment combined with gold nanoparticles carrying antibodies to the TYRP1 protein, which is expressed by melanomas of different types, were obtained.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 8","pages":"906 - 913"},"PeriodicalIF":1.1,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537649","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

Plasma Gas Kinetic Temperature in the Synthesis of Titanium Dioxide Microparticles with Deposited Copper Nanoparticles 沉积铜纳米颗粒合成二氧化钛微粒的等离子体气体动力学温度

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603244

V. P. Logvinenko, I. Yu. Vafin, A. A. Letunov, A. V. Knyazev, E. V. Voronova, N. N. Skvortsova, V. D. Borzosekov, A. S. Sokolov, V. D. Stepakhin, I. R. Nugaev, A. K. Kozak, E. A. Obraztsova

{"title":"Plasma Gas Kinetic Temperature in the Synthesis of Titanium Dioxide Microparticles with Deposited Copper Nanoparticles","authors":"V. P. Logvinenko, I. Yu. Vafin, A. A. Letunov, A. V. Knyazev, E. V. Voronova, N. N. Skvortsova, V. D. Borzosekov, A. S. Sokolov, V. D. Stepakhin, I. R. Nugaev, A. K. Kozak, E. A. Obraztsova","doi":"10.1134/S1063780X25603244","DOIUrl":"10.1134/S1063780X25603244","url":null,"abstract":"The plasma gas kinetic temperature in the reaction of synthesis of titanium dioxide (TiO2) microparticles with copper (Cu) nanoparticles deposited on them is estimated from the radiation of a titanium oxide (TiO) molecule. The synthesis reactions have been initiated by microwave radiation of a powerful gyrotron in a mixture of titanium dioxide and copper powders. As a result, materials are obtained that include micro-sized titanium dioxide particles of rounded shape ranging in size from 10 to 200 μm with copper nanoparticles deposited on their surface. The copper concentration in the powder mixtures varied from 0.1 to 20 wt %. The microwave breakdown in the mixtures is provided by the use of a steel initiator. The gas kinetic temperature is estimated from the radiation spectrum of the TiO molecule γ-system in the range from 700 to 720 nm. The bands in this range are caused by electron transitions between the А3Φ–Х3Δ molecular states. It is shown that the synthesis is carried out at the same gas kinetic temperatures of 5500 ± 500 K, which do not depend on the copper content in the powder mixture.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 7","pages":"864 - 870"},"PeriodicalIF":1.1,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145426001","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

Generating a Strong Electric Field in a Dielectric Film on a Metal Surface during Interaction with a Pulsed Plasma Flow 与脉冲等离子体流相互作用时在金属表面的介电膜中产生强电场

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603207

V. A. Ivanov, M. A. Tereshchenko, M. E. Konyzhev, T. I. Kamolova, A. A. Dorofeyuk

{"title":"Generating a Strong Electric Field in a Dielectric Film on a Metal Surface during Interaction with a Pulsed Plasma Flow","authors":"V. A. Ivanov, M. A. Tereshchenko, M. E. Konyzhev, T. I. Kamolova, A. A. Dorofeyuk","doi":"10.1134/S1063780X25603207","DOIUrl":"10.1134/S1063780X25603207","url":null,"abstract":"The paper considers the main physical processes that determine flows of charged particles onto a negative metal electrode immersed in a fully ionized isotropic plasma. Equations are found describing the charged particle motion in the plasma both near the metal electrode under a constant negative potential ({{Psi }_{0}}) and far from it. The charged particle flows from the plasma to the electrode in the charge separation region near the electrode surface are calculated for large ratios of the electrode electric potential ({{Psi }_{0}}) to the plasma electron temperature ({{T}_{e}}): (e{{Psi }_{0}}{text{/}}{{T}_{e}} gg 1). The ion and electron current densities from the plasma to the electrode are calculated. It is shown that, in the specific case of interaction of a negative titanium electrode with a natural oxide film about 10 nm thick with a pulsed plasma with a density ({{n}_{i}} = {{10}^{{13}}}) cm–3, as a result of charge transfer to the film surface by the ion flow from the plasma, electric voltages of about 6 V and a corresponding strong electric field of about 6 MV/cm arise inside the film over characteristic times of 5–8 μs. Such a strong electric field leads to electrical breakdown of the thin film and excitation of microplasma discharges on titanium. A reduction in the plasma density significantly reduces the probability of excitation of microplasma discharges on the surface of the metal electrode.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 7","pages":"822 - 829"},"PeriodicalIF":1.1,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145426022","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

Modification of Background Plasma Parameters as a Result of Beats of the Incident and Reflected Waves in the Vicinity of the Linear Mode Conversion Region 线性模式转换区附近入射波和反射波的拍频对背景等离子体参数的影响

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603050

A. Yu. Popov, P. V. Tretinnikov

引用次数: 0

Electron Temperature in Plasma-Chemical Processes of Synthesis of Aluminum Oxide Microparticles with Deposited Platinum Nanoparticles 沉积铂纳米颗粒合成氧化铝微粒子的等离子体化学过程中的电子温度

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603438

I. Yu. Vafin, V. P. Logvinenko, A. V. Knyazev, N. N. Skvortsova, E. V. Voronova, V. D. Borzosekov, T. E. Gayanova, V. D. Stepakhin, N. S. Akhmadullina, O. N. Shishilov

引用次数: 0

Purification of Metallurgical Silicon from Metal Impurities in Electron-Beam Plasma of Water Vapor 水蒸汽电子束等离子体中金属杂质对冶金硅的净化

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603281

V. O. Konstantinov, V. G. Shchukin

引用次数: 0

Evolution of Low-Frequency Barrier Discharge Plasma Radiation in Low-Pressure Neon. Ion Radiation Spectrum 低压氖气中低频阻挡放电等离子体辐射的演化。离子辐射谱

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603220

V. A. Ivanov

{"title":"Evolution of Low-Frequency Barrier Discharge Plasma Radiation in Low-Pressure Neon. Ion Radiation Spectrum","authors":"V. A. Ivanov","doi":"10.1134/S1063780X25603220","DOIUrl":"10.1134/S1063780X25603220","url":null,"abstract":"Emission of low-frequency barrier discharge plasma in neon at a pressure of 1.4–1.7 Torr formed by transitions between excited states of the Ne+ ion is studied in the wavelength range of 290–450 nm using kinetic spectroscopy methods. The difference in the relative intensities of ion lines at different stages of the plasma evolution is discussed: from direct excitation with ionization from the ground state of the atom by electron impact in the active stage (discharge), followed by a transition to the recombination afterglow as the electron temperature relaxes. The latter is due to the collisional-radiative recombination of doubly charged Ne2+ ions with electrons, creating at a density of the latter of [e] ≈ 1011 cm–3 the population flux of some Ne+* levels comparable to excitation by electrons at the stage of the plasma creation. A significant number of ion lines corresponding to transitions from states with the principal quantum number n = 3 contain an intermediate stage, the explanation of which is based on the experimentally confirmed hypothesis that the long-lived neon atoms in metastable states participate in their excitation. In contrast, the spectral lines of transitions from excited states of the Ne+* ion of 2s22p4(3P2)4f configurations do not have this stage.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 7","pages":"842 - 853"},"PeriodicalIF":1.1,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145426000","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

Electric Explosion of Flat Copper Conductors in the Current Skinning Mode 扁平铜导体在电流蒙皮模式下的电爆炸

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-11-02 DOI: 10.1134/S1063780X25603487

I. M. Datsko, N. A. Labetskaya, V. A. Van’kevich, S. A. Chaikovskii, V. I. Oreshkin, E. V. Oreshkin

{"title":"Electric Explosion of Flat Copper Conductors in the Current Skinning Mode","authors":"I. M. Datsko, N. A. Labetskaya, V. A. Van’kevich, S. A. Chaikovskii, V. I. Oreshkin, E. V. Oreshkin","doi":"10.1134/S1063780X25603487","DOIUrl":"10.1134/S1063780X25603487","url":null,"abstract":"The paper presents the results of experiments and radiation MHD calculations of the electric explosion of flat copper conductors in megagauss magnetic fields. The experiments were carried out on a te-rawatt-range MIG facility at a current of up to 2.5 MA and a rise time of 100 ns. The width of the conductors (along the x axis) was much greater than their thickness (along the y axis), and the current was directed along the z axis. It was shown experimentally and confirmed by RMHD calculations that the conductor expands in thickness along the y axis, while plasma expansion is suppressed in width along the x axis. This is due to the increase in the magnetic field at the conductor edges, which also causes an earlier explosion of the end faces. The substance from the end faces flies to the center of symmetry of the plate’s wide faces as a low-density plasma. As a result, on the conductor’s wide face (plane XZ), along its longitudinal z axis, a plasma channel is formed approximately 75 ns from the start of the current flow. X-ray images of the conductors were obtained from the X-ray radiation from the hot spot of the X-pinch. The detected expansion of the conductor along the y coordinate is in good agreement with the calculated data.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"51 7","pages":"763 - 772"},"PeriodicalIF":1.1,"publicationDate":"2025-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X25603487.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145426017","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