Plasma Physics Reports最新文献_第2页

TRT Divertor Optimization in SOLPS-ITER Modeling

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24601767

P. A. Molchanov, P. S. Kudrevatykh, N. V. Shtyrkhunov, E. G. Kaveeva, V. A. Rozhansky, I. Yu. Senichenkov

引用次数: 0

Formation of Liquid Spray in the Presence of Barrier Discharge

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24601998

A. S. Saveliev, A. V. Ugryumov

引用次数: 0

Plasma Pyrolysis of Methane Using a DC Plasma Torch

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24602141

S. G. Rebrov, V. V. Koshlakov, A. N. Golikov, I. A. Fedorov, I. V. Bilera, Yu. A. Lebedev, I. L. Epstein

引用次数: 0

Investigation of Electron Temperature Profile Details during Plasma Column Displacement and ECRH Power up to 1.5 MW in the T-10 Tokamak

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24601342

S. V. Neudachin, A. A. Borschegovskii, I. S. Pimenov, I. N. Roy

{"title":"Investigation of Electron Temperature Profile Details during Plasma Column Displacement and ECRH Power up to 1.5 MW in the T-10 Tokamak","authors":"S. V. Neudachin, A. A. Borschegovskii, I. S. Pimenov, I. N. Roy","doi":"10.1134/S1063780X24601342","DOIUrl":"10.1134/S1063780X24601342","url":null,"abstract":"The question of the existence of internal transport barriers (ITBs) around low-rational number values of the stability factor q = 1, 2, … in the usual L-mode of tokamaks with central additional heating and positive magnetic shear remains open. To clarify the existence of such ITBs, experiments were carried out with a programmed linear time shift of the plasma column, in which the positions of the electron temperature measurements Te of the emission at the second electron cyclotron harmonic are shifted relative to the plasma column, which allows one to study the Te profile details. A series of experiments with perpendicular input of EC radiation with a power of 0.4 and 0.85 MW at a central ECRH and a fast (60 ms) shift of the column by 0.13a (minor plasma radius a) were carried out on the T-10 tokamak in plasma with a carbon limiter. In both cases, outside the q = 1 surface narrow (about 0.03a wide) and weak (a decrease in the coefficient of electron thermal conductivity χe by approximately two times) ITBs detected, which disappeared when the discharge parameters changed. These ITBs are 2–3 times narrower and an order of magnitude weaker than the ITBs near the surface q = 1, which was previously proposed to explain the RTP tokamak results. ITBs were not detected in the L-mode in experiments with simultaneous generation of a co-current and counter-current in the plasma center by two gyrotrons with a total power of 1.5 MW in a plasma with a tungsten limiter (column shift by 0.1a in 30 ms). This article appears to be the first journal publication on the study of Te profile details with rapid movement of the plasma column.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 12","pages":"1481 - 1490"},"PeriodicalIF":0.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430851","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

Impact of Resonant Helical Magnetic Fields on the Correlations between Density Bursts and Magnetic Fluctuation in IR-T1 Tokamak

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24601299

M. Mahjour, M. Lafouti, M. Ghoranneviss, M. K. Salem

{"title":"Impact of Resonant Helical Magnetic Fields on the Correlations between Density Bursts and Magnetic Fluctuation in IR-T1 Tokamak","authors":"M. Mahjour, M. Lafouti, M. Ghoranneviss, M. K. Salem","doi":"10.1134/S1063780X24601299","DOIUrl":"10.1134/S1063780X24601299","url":null,"abstract":"We investigated the correlation between density perturbations (bursts), having stochastic or intermittent character and magnetic fluctuations detected by Mirnov coils. To achieve this, we designed and constructed a novel Mixed-Probe system in the IR-T1 tokamak. Our experimental approach involved two steps: first with Resonant Helical magnetic Fields (RHF) and then without RHF. The conditional averaged analysis of the probe ion saturation current (({{tilde {I}}_{{{text{sat}}}}})) revealed that stochastic density bursts or intermittencies were more likely to exist during the time interval between t = 10 and 12 ms. Before applying RHF, the intermittencies exhibited a strong cross-correlation with magnetic fluctuations. The predominant frequencies observed are below 7 kHz. Interestingly, after applying RHF, the peaks in the frequency of the ({{tilde {I}}_{{{text{sat}}}}}) signal disappeared, and there was no predominant peak in the FFT of ({{tilde {I}}_{{{text{sat}}}}}). We further analyzed the radial and poloidal velocities of bursts and magnetic fluctuations using diagnostic data. The results suggested that magnetic fluctuations induced oscillations in the background plasma, affecting the radial motion of the density perturbations. Notably, the poloidal velocity of the magnetic field perturbations exceeded that of the bursts, allowing it to shear the poloidal plasma flux and generate the density bursts. The differing velocities confirmed their coupling for a specific time, followed by decoupling. Overall, in the IR-T1 tokamak, applying RHF reduced the cross-correlation between magnetic fluctuations and stochastic density bursts.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 12","pages":"1506 - 1517"},"PeriodicalIF":0.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430714","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

On the Applicability of GAM Theory to Real Tokamaks with Rippled Magnetic Fields

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24602098

E. A. Sorokina

引用次数: 0

Heat and Particle Transport Simulation in COMPASS and T-10 Tokamaks with the Canonical Profile Transport Model

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-02-17 DOI: 10.1134/S1063780X24601780

A. V. Danilov, Yu. N. Dnestrovskij, A. V. Melnikov, L. G. Eliseev, S. E. Lysenko, S. V. Cherkasov

{"title":"Heat and Particle Transport Simulation in COMPASS and T-10 Tokamaks with the Canonical Profile Transport Model","authors":"A. V. Danilov, Yu. N. Dnestrovskij, A. V. Melnikov, L. G. Eliseev, S. E. Lysenko, S. V. Cherkasov","doi":"10.1134/S1063780X24601780","DOIUrl":"10.1134/S1063780X24601780","url":null,"abstract":"The results of heat and particle transport simulations for ohmic plasma in the T-10 tokamak with a circular limiter and for D-shaped plasma in the COMPASS tokamak with a divertor are presented. In addition, the H-mode with ohmic heating and with additional heating by the neutral beam injection (NBI) in the COMPASS was simulated. The simulations were carried out with the Canonical profile transport model (CPTM) using the ASTRA code. The obtained electron temperature and density profiles agree with the measured ones with standard deviations within the experimental accuracy of 10–15%. The calculations demonstrated very similar density profiles in the H-mode both with the ohmic and with additional NBI heating. The electron temperature profiles in the H-mode with additional heating have higher pedestals than in the ohmic H-mode, that agree with the measurements. The comparison showed that the ohmic regimes in COMPASS and T-10 can be described by the same stiffness coefficients in the heat and particle transport equations.","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 12","pages":"1491 - 1498"},"PeriodicalIF":0.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430858","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

Frequency Dependence of Ion Energy at the Outlet of a Capacitive RF Discharge Placed in an External Magnetic Field with a Predominant Radial Component 放置在具有主要径向分量的外磁场中的电容式射频放电出口处离子能量的频率依赖性

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-01-12 DOI: 10.1134/S1063780X24601883

G. V. Shvydkiy, K. V. Vavilin, I. I. Zadiriev, E. A. Kralkina, A. M. Nikonov

引用次数: 0

Dynamics of the Expansion of Artificial Plasma Formations in Earth’s Ionosphere 地球电离层中人造等离子体形成膨胀的动力学

IF 0.9 4区物理与天体物理

Plasma Physics Reports Pub Date : 2025-01-12 DOI: 10.1134/S1063780X24601536

T. V. Losseva, E. M. Urvachev, E. S. Goncharov, A. N. Lyakhov

引用次数: 0

Integral Plasma Current and Determination of Current Sheet Parameters 积分等离子体电流和电流片参数的测定