Plasma Physics Reports最新文献_第2页

On the Nonlinear Dust Acoustic Perturbations in the Ionosphere of Mars 火星电离层非线性尘埃声扰动研究

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-01-12 DOI: 10.1134/S1063780X24601688

Yu. S. Reznichenko, Yu. N. Izvekova, S. I. Popel

引用次数: 0

Van Kampen Waves in Quantum Plasma 量子等离子体中的范坎彭波

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-01-12 DOI: 10.1134/S1063780X2460186X

A. M. Ignatov

引用次数: 0

Quasi-Optical Simulations of Scenarios with the Second Harmonic Electron Cyclotron Plasma Heating at the GDT Facility GDT装置中二次谐波电子回旋加速器等离子体加热情景的准光学模拟

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-01-12 DOI: 10.1134/S1063780X24601585

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

{"title":"Quasi-Optical Simulations of Scenarios with the Second Harmonic Electron Cyclotron Plasma Heating at the GDT Facility","authors":"T. A. Khusainov, A. A. Balakin, E. D. Gospodchikov, A. L. Solomakhin, A. G. Shalashov","doi":"10.1134/S1063780X24601585","DOIUrl":"10.1134/S1063780X24601585","url":null,"abstract":"The absorption of microwave radiation in the GDT open magnetic trap (Budker Institute of Nuclear Physics) was studied using a new scheme of electron cyclotron resonance plasma heating at the second harmonic, in which radiation in the form of the extraordinary wave was launched almost transverse to the plasma column. When performing numerical simulations, the full-aberration quasi-optical approach was used, which was verified using the first experimental data, obtained at the facility. The optimal scenarios using the new heating system were analyzed. It was found that in the current configuration, the total efficiency of microwave heating does not exceed 60%, which is considerably less than that planned when designing the system. This occurs due to the tangential reflection of heating radiation from the resonance region; this is a wave effect that was previously not taken into account within the framework of the geometric-optics approximation. It was shown that heating at the second harmonic does not result in excitation of the “overheating” instability of the electron component observed during heating at the first harmonic; on the whole, the wide power deposition profile is formed in this case. This is an advantage of the new scheme, since it makes it possible to avoid the development of MHD plasma instabilities associated with peaked power release at the axis of the plasma column.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 11","pages":"1337 - 1352"},"PeriodicalIF":0.9,"publicationDate":"2025-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142963124","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

2D–4D Simulations of Neutral Particles Penetration into Central Plasma Region in the L-2M Stellarator. Verification of Results Using ASTRA Code 中性粒子穿透 L-2M 恒星器中央等离子体区域的 2D-4D 模拟。使用 ASTRA 代码验证结果

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601354

A. I. Meshcheryakov, I. A. Grishina, N. V. Kasyanova

引用次数: 0

Generation of Quasi-Electrostatic Slow Extraordinary Waves by Kappa Distribution with a Loss Cone 利用带有损耗锥的卡帕分布产生准静电慢速超常波

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601408

D. R. Shklyar, N. S. Artekha

{"title":"Generation of Quasi-Electrostatic Slow Extraordinary Waves by Kappa Distribution with a Loss Cone","authors":"D. R. Shklyar, N. S. Artekha","doi":"10.1134/S1063780X24601408","DOIUrl":"10.1134/S1063780X24601408","url":null,"abstract":"A detailed study of the generation of slow extraordinary (SE) waves in the Earth’s magnetosphere has been carried out. Assuming that energetic electrons are distributed in accordance with the (kappa )-function with a loss cone, the instability growth rate of SE waves is calculated and its dependence on both the parameters of the hot particle distribution function and the cold particle density, characterized by the ratio of the electron plasma frequency to the electron cyclotron frequency, ({{omega }_{p}}{text{/}}{{omega }_{c}}), is studied. This ratio is one of the key parameters of the problem. For various ({{omega }_{p}}{text{/}}{{omega }_{c}}) values, the dependences of the instability growth rate on the parameter (kappa ) of the distribution function, the loss cone parameter (l), and the temperature of the distribution and its anisotropy are obtained. A nonmonotonic, quasi-periodic dependence of the growth rate on the ratio of the frequency to the electron gyrofrequency, which manifests itself in the dependence of the equatorial growth rate on the (L)-shell or the dependence of the growth rate on the latitude on a fixed (L)-shell, is revealed and explained.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 10","pages":"1250 - 1264"},"PeriodicalIF":0.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587720","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

Circumlunar Dusty Plasma: Main Physical Processes and Experimental Data Obtained during the “Luna-25” Mission 环月尘埃等离子体：月球-25 "任务期间获得的主要物理过程和实验数据

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601305

S. I. Popel, L. M. Zelenyi, A. V. Zakharov, I. A. Kuznetsov, G. G. Dol’nikov, A. N. Lyash, I. A. Shashkova, A. A. Kartasheva, A. E. Dubov, M. E. Abdelaal, Yu. S. Reznichenko

引用次数: 0

Hard X-Ray Collimation System at the T-15MD Tokamak T-15MD 托卡马克的硬 X 射线准直系统

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601172

V. I. Tepikin, P. V. Savrukhin, E. A. Shestakov, P. D. Lisovoi, A. V. Khramenkov, A. I. Aristov

{"title":"Hard X-Ray Collimation System at the T-15MD Tokamak","authors":"V. I. Tepikin, P. V. Savrukhin, E. A. Shestakov, P. D. Lisovoi, A. V. Khramenkov, A. I. Aristov","doi":"10.1134/S1063780X24601172","DOIUrl":"10.1134/S1063780X24601172","url":null,"abstract":"The Hard X-Ray collimation system was installed at the T-15MD tokamak (major radius of R = 1.48 m, minor radius of a = 0.67 m, elongation of k = 1.7–1.9, triangularity of δ = 0.3–0.4, toroidal magnetic field of BT = 2 T, plasma current of up to Ip = 2 MA, and discharge duration of up to 30 s) to provide the possibility of measuring the spatial and temporal evolution of runaway electron beams. The diagnostic is based on LaBr3(Ce) scintillation detectors, witch provides energy spectrum measurements for energies form 0.3 to 10 MeV. Monte Carlo simulation of the shielding efficiency in the GEANT4 environment showed that the collimator provides 2° field of view (FOV). Horizontal and vertical FOV movement along the plasma cross-section is arranged by a rotating base and screw support elements. An algorithm for processing the signals from the scintillation detectors with a graphical user interface and data visualization is used for reconstruction of the spectra. The results of testing the detector in a laboratory setup and in preliminary experiments carried out with the T-15MD tokamak in which runaway electrons beams were generated are presented.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 10","pages":"1189 - 1197"},"PeriodicalIF":0.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587739","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 Diagnostics in T-15MD Divertor: Tasks, Problems, and Implementation Possibilities T-15MD 分流器中的等离子体诊断：任务、问题和实施可能性

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601421

K. Yu. Vukolov, E. N. Andreenko, M. Yu. Buzmakov, V. S. Neverov, I. I. Orlovskiy, Yu. I. Tolpegina, D. A. Fedorov

{"title":"Plasma Diagnostics in T-15MD Divertor: Tasks, Problems, and Implementation Possibilities","authors":"K. Yu. Vukolov, E. N. Andreenko, M. Yu. Buzmakov, V. S. Neverov, I. I. Orlovskiy, Yu. I. Tolpegina, D. A. Fedorov","doi":"10.1134/S1063780X24601421","DOIUrl":"10.1134/S1063780X24601421","url":null,"abstract":"The article considers different methods of divertor plasma diagnostics planned for using in the T‑15MD tokamak. Technical problems arising during operation of optical systems in the divertor zone are discussed, including degradation of in-vessel optical elements. The main attention is paid to the conceptual design of the “Passive Spectroscopy in Divertor” diagnostic system. The optical system, including in-vessel mirrors, and methods for protecting its components from the negative effects of plasma are described in detail. Using synthetic diagnostics and numerical simulation methods, the possibility of solving the problem of tomographic reconstruction of the two-dimensional profile of plasma radiation in the T-15MD divertor is demonstrated. Based on the results presented, it was concluded that passive spectroscopy can be used for obtaining data on plasma parameters in the divertor with good spatial resolution, which will make it possible to study the physics of processes and monitor the operation of the T-15MD divertor, including the operation in detachment regime.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 10","pages":"1198 - 1213"},"PeriodicalIF":0.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587719","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 Active Particles in Methane, Nitrogen, and Oxygen Mixtures under Simultaneous Action of an Electric Field and an Electron Beam 电场和电子束同时作用下甲烷、氮气和氧气混合物中活性粒子的形成

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24601433

D. V. Tereshonok, N. L. Aleksandrov, N. Yu. Babaeva, V. P. Konovalov, G. V. Naidis, V. A. Panov, A. V. Ugryumov

{"title":"Formation of Active Particles in Methane, Nitrogen, and Oxygen Mixtures under Simultaneous Action of an Electric Field and an Electron Beam","authors":"D. V. Tereshonok, N. L. Aleksandrov, N. Yu. Babaeva, V. P. Konovalov, G. V. Naidis, V. A. Panov, A. V. Ugryumov","doi":"10.1134/S1063780X24601433","DOIUrl":"10.1134/S1063780X24601433","url":null,"abstract":"The paper presents a computational and theoretical analysis of kinetic processes in methane, nitrogen, and oxygen mixtures for non-self-sustaining direct current discharges supported by an electron beam. Within an approximate approach, the kinetic coefficients in plasma under the simultaneous action of an applied electric field and an electron beam are determined. In a zero-dimensional (spatially homogeneous) approximation, the quasi-stationary composition of charged particles is calculated. The rate constants for generation of chemically active neutral particles of various types in plasma are calculated along with the energy efficiencies (G-factors) of the production of these particles depending on the magnitudes of the reduced electric field and the beam current. Similarity rules are proposed for the relation between the rates of production of active particles under the action of an electric field and an electron beam. It is shown that, by varying the applied field, it is possible to influence the composition of the produced hydrocarbon radicals.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 10","pages":"1313 - 1326"},"PeriodicalIF":0.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587752","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 a Helicon Plasma by Emission Spectroscopy Methods 用发射光谱法研究螺旋等离子体

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2024-11-05 DOI: 10.1134/S1063780X24600828

I. V. Moskalenko, D. O. Shurovskiy, N. N. Nagel, D. S. Kutuzov, E. Yu. Bragin

引用次数: 0