Plasma Physics Reports最新文献

A Discharge Slipping over the Surface of Water as a Source of UV Radiation and Hydroxyl Radicals in a Liquid 在液体中作为紫外线辐射和羟基自由基来源的一种在水面上滑动的排放物

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600901

A. M. Anpilov, E. M. Barkhudarov, Yu. N. Kozlov, I. V. Moryakov, S. M. Temchin, I. M. Taktakishvili

引用次数: 0

Acceleration of Electrons in a Combined Magnetic Trap in the Synchronous Mode 同步模式下复合磁阱中电子的加速

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600822

V. P. Milant’ev, V. V. Andreev, V. A. Turikov

引用次数: 0

Plasma Distribution in a Column of a Low-Pressure Microwave Discharge Sustained by a Standing Surface Wave 由驻表面波维持的低压微波放电柱中的等离子体分布

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600792

V. I. Zhukov, D. M. Karfidov

{"title":"Plasma Distribution in a Column of a Low-Pressure Microwave Discharge Sustained by a Standing Surface Wave","authors":"V. I. Zhukov, D. M. Karfidov","doi":"10.1134/S1063780X23600792","DOIUrl":"10.1134/S1063780X23600792","url":null,"abstract":"The structure of a low-pressure microwave discharge sustained by a standing surface electromagnetic wave (SEW) in a quartz tube filled with argon was studied. The standing wave was formed using a set of two flat metal mirrors, which formed an open SEW resonator. The plasma density profile and structure of the electromagnetic field of the SEW were studied in the pressure range from 0.25 to 10 Torr. The excitation of the standing wave allowed us to independently study the longitudinal Ez and transverse Er components of the SEW electric field vector. It was confirmed experimentally that the oscillation phases of the components of the SEW are shifted by π. The excitation of the standing wave in the plasma column leads to the formation of local minimums and maximums of plasma density, whose period equals half the wavelength of the surface wave. At the same time, the spatial period of density modulation is close to the distribution of the Ez component of the standing SEW. It was shown that the formation time of the modulated structure of plasma density is close to the characteristic time of diffusion, while the degree of modulation increases with increasing pressure. It was shown experimentally that it is possible to produce a plasma column with plasma density modulation nemax/nemin ≈ 5 and a length of about 10 wavelengths.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"975 - 983"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183969","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

Study of the Effect of the Anode on EEDF and the Spatial Profile of the Electron Density in a Discharge with a Hollow Cathode in Helium 负极对EEDF的影响及氦空心阴极放电中电子密度空间分布的研究

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600846

S. N. Andreev, A. V. Bernatskiy, N. A. Dyatko, I. V. Kochetov, V. N. Ochkin

{"title":"Study of the Effect of the Anode on EEDF and the Spatial Profile of the Electron Density in a Discharge with a Hollow Cathode in Helium","authors":"S. N. Andreev, A. V. Bernatskiy, N. A. Dyatko, I. V. Kochetov, V. N. Ochkin","doi":"10.1134/S1063780X23600846","DOIUrl":"10.1134/S1063780X23600846","url":null,"abstract":"The electron energy distribution function (EEDF) and the spatial profile of the electron density in the cathode–anode gap in a helium discharge are calculated within a one-dimensional model by the Monte Carlo method. Numerical studies are performed for experimental conditions known from the literature in a discharge with a hollow cathode: the cathode–anode distance of 3 cm, the helium pressure of 0.75 Torr, and the electric field strength in the discharge gap of 1.3 V/cm. The calculations are performed without and with allowance for the anode potential drop and the effect of electron reflection from the anode. The dependence of the form of EEDF on the energy spectrum of the electron source used in the calculations is also studied. In all variants of calculations, the main feature of the EEDF is retained, that is, a significant depletion of the low-energy part of the distribution function due to the effect of electron absorption by the anode. The calculated EEDF and the spatial profile of the electron density are compared with the available experimental data.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1031 - 1037"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183970","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

Cylindrical Three Dimensional Dust–Ion–Acoustic Solitary Waves in Nonthermal Plasmas 非热等离子体中的圆柱形三维尘埃离子声孤波

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600354

S. Tarofder, A. Mannan, A. A. Mamun

{"title":"Cylindrical Three Dimensional Dust–Ion–Acoustic Solitary Waves in Nonthermal Plasmas","authors":"S. Tarofder, A. Mannan, A. A. Mamun","doi":"10.1134/S1063780X23600354","DOIUrl":"10.1134/S1063780X23600354","url":null,"abstract":"Cylindrical three dimensional dust–ion–acoustic (DIA) solitary waves (SWs) in a complex plasma medium consisting of nonthermal electrons, adiabatically warm ions, and immobile positively charged dust (PCD) species are studied. The reductive perturbation method, which is valid for small but finite amplitude waves, is used to derive the (3 + 1)-dimensional cylindrical Kadomstev–Petviashvili (cKP) equation (also known as cylindrical Korteweg–de Vries equation). The parametric regimes for the existence of solitary structures are shown. The plasma model under consideration supports both the positive and negative DIA SWs. Moreover, the effects of the physical plasma parameters (the ratio of the dust to ion number density, the nonthermal parameter, etc.) on the basic features (amplitude, width, and speed, etc.) of DIA SWs are discussed. Depending on the plasma parameters (the PCD and ion number density ratio, nonthermality of electron, and temperature ratio of ion and electron) the solitary pulses change their polarity. The present investigation may be helpful to the understanding of the properties of the DIA SWs in different astrophysical plasma environments as well as in laboratory devices.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1014 - 1022"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183975","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

Distinctive Features of Anomalous Plasma Radiation in Experiments on Electron Cyclotron Heating Using Extraordinary Wave at the Second Resonance Harmonic in a Wide Density Range 大密度范围内二共振超高频加热电子回旋加速器实验中等离子体异常辐射的显著特征

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600779

E. Z. Gusakov, A. Yu. Popov

引用次数: 0

On the Issue of Possibility of Reducing Anomalous Absorption of Extraordinary Pump Wave in a Wide Range of Plasma Densities 在大等离子体密度范围内减少异常泵浦波异常吸收的可能性问题

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600767

E. Z. Gusakov, A. Yu. Popov

引用次数: 0

Investigation of the Plasma Current Sheath Dynamics in the Run Down Phase of the Hemispherical Plasma Focus Devices Using Two-Dimensional Time Dependent Modeling 利用二维时间相关模型研究半球形等离子体聚焦器件运行阶段的等离子体电流护套动力学

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600159

M. E. Abdel-kader, M. A. Abd Al-Halim

{"title":"Investigation of the Plasma Current Sheath Dynamics in the Run Down Phase of the Hemispherical Plasma Focus Devices Using Two-Dimensional Time Dependent Modeling","authors":"M. E. Abdel-kader, M. A. Abd Al-Halim","doi":"10.1134/S1063780X23600159","DOIUrl":"10.1134/S1063780X23600159","url":null,"abstract":"The Hemisphere Plasma Focus (HSPF) device is a new construction in which the discharge takes place between two concentric hemispherical electrodes. A 2D snow plow model is designed in order to simulate the distributions of the HSPF characteristics between the two electrodes. The model used the momentum and circuit equations to describe the different characteristics in the rundown phase such as; the distributions of the magnetic field, the sheath velocity, the sheath displacement, and the plasma temperature. The results show that the simulated discharge current is in a good agreement with the experimental signal for input charging voltage of 3 kV and helium gas pressure of 0.6 Torr. The peak discharge current is about 42 kA with rise time of about 8.5 μs and the rundown phase is completed at time of about 6.5 μs. The timelines of the current sheath displacement show that the sheath has almost an umbrella shape. As the current sheath is accelerated in θ-direction towards antipodal point, the magnetic field and the plasma temperature are increased and their values are higher as one goes closer to the inner electrode.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1023 - 1030"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183976","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

Generation of Soft X-Ray and Vacuum Ultraviolet Radiation during the Interaction of a Hydrogen Plasma Flow with a Gas Jet 氢等离子体流与气体射流相互作用过程中软x射线和真空紫外辐射的产生

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600664

D. A. Toporkov, D. A. Burmistrov, V. V. Gavrilov, A. M. Zhitlukhin, V. A. Kostyushin, S. D. Lidzhigoryaev, A. V. Pushina, S. A. Pikuz, S. N. Ryazantsev, I. Yu. Skobelev

{"title":"Generation of Soft X-Ray and Vacuum Ultraviolet Radiation during the Interaction of a Hydrogen Plasma Flow with a Gas Jet","authors":"D. A. Toporkov, D. A. Burmistrov, V. V. Gavrilov, A. M. Zhitlukhin, V. A. Kostyushin, S. D. Lidzhigoryaev, A. V. Pushina, S. A. Pikuz, S. N. Ryazantsev, I. Yu. Skobelev","doi":"10.1134/S1063780X23600664","DOIUrl":"10.1134/S1063780X23600664","url":null,"abstract":"Results are presented of research aimed at creating a compact source of soft X-ray and vacuum ultraviolet radiation through the collision of a powerful plasma flow with a gas jet. In experiments that were carried out, a pulsed electrodynamic accelerator generated a hydrogen plasma flow with an energy constant of ≈50 kJ and duration of 10–15 μs. The flow, with a density of ≈6 × 1015 cm–3, moved at a velocity of (2‒4) × 107 cm/s in a longitudinal magnetic field with an induction of up to 2 T and interacted with a flat supersonic gas jet. The maximum molecular density of the gas, nitrogen or neon, in the jet reached 1017 cm–3. The formation of a compact emitting plasma layer with a thickness of 3–5 cm, moving along the path of the hydrogen plasma flow at a speed of approximately 3 × 106 cm/s was demonstrated. In several experiments, a tungsten plate was used as an obstacle to confine the motion of the emitting plasma along the magnetic field, localizing the interaction region between the plasma flow and the gas jet within the diagnostic control zone. Soft X-ray obscurography and spectroscopy were used to obtain data regarding the radiation generation from the interaction zone of the hydrogen plasma flow and the gas jet. The results of measuring the radiation energy from the formed plasma are presented: ≈2 kJ in the case of a nitrogen jet and ≈ 3 kJ in the case of a neon jet. Numerical modeling of the line radiation from multi-charged ions and subsequent comparison of calculated and experimental data allowed estimating the electron temperature of the nitrogen and neon plasmas formed during the interaction of the hydrogen plasma flow with the gas jet at a level of ≥40 eV.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"49 8","pages":"1000 - 1005"},"PeriodicalIF":1.1,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"7183918","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

Dusty Plasma in the Solar System: Celestial Bodies without Atmosphere 太阳系中的尘埃等离子体:没有大气层的天体

IF 1.1 4区物理与天体物理

Plasma Physics Reports Pub Date : 2023-09-18 DOI: 10.1134/S1063780X23600780

S. I. Popel, L. M. Zelenyi, A. V. Zakharov

引用次数: 2