Physics of Plasmas最新文献_第4页

Erratum: “RF plugging of multi-mirror machines” [Phys. Plasmas 30, 072510 (2023)] 勘误："多镜机的射频插接" [Phys. Plasmas 30, 072510 (2023)]

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0218189

Tal Miller, Ilan Be'ery, Eli Gudinetsky, Ido Barth

引用次数: 0

Anomalous transport of multi-species edge plasma with the generalized Hasegawa–Wakatani model and the FLR effects 使用广义长谷川-若谷模型和 FLR 效应的多物种边缘等离子体的反常输运

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0209568

S. Krasheninnikov, R. D. Smirnov

{"title":"Anomalous transport of multi-species edge plasma with the generalized Hasegawa–Wakatani model and the FLR effects","authors":"S. Krasheninnikov, R. D. Smirnov","doi":"10.1063/5.0209568","DOIUrl":"https://doi.org/10.1063/5.0209568","url":null,"abstract":"Anomalous transport of multi-species plasma is considered with the generalized Hasegawa–Wakatani model [A. R. Knyazev and S. I. Krasheninnikov, Phys. Plasmas 31, 012502 (2024)] further extended to incorporate the Finite Larmor Radius (FLR) effects. By introducing the “associated” enstrophy, it is shown that with no FLR effects (where anomalous transport of all ion species is described as a transport of passive scalars in the turbulent fields of the electrostatic potential and electron density fluctuations) the fluctuating densities of ion species converge to the state where they are linearly proportional to electron density and vorticity fluctuations, which confirm previous numerical findings of [A. R. Knyazev and S. I. Krasheninnikov, Phys. Plasmas 31, 012502 (2024)]. However, in contrast to the “cold” ion approximation, with the FLR effects included, both the plasma turbulence and the dynamics of all ion species become interconnected. Therefore, for simplicity, the FLR effects in this work were considered only for a small “trace” impurity fraction. It is found that for light (neon) “trace” impurity, the FLR effects reduce both anomalous flux and density fluctuations. However, for heavy (tungsten) “trace” impurity, the FLR effects exhibit non-monotonic impact on anomalous transport.","PeriodicalId":510396,"journal":{"name":"Physics of Plasmas","volume":"8 5‐6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141138964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On anomalous transport of multi-species plasma associated with the resistive ballooning and resistive drift waves driven turbulence 与阻力气球和阻力漂移波驱动湍流相关的多物种等离子体异常输运问题

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0209754

S. I. Krasheninnikov

引用次数: 0

Characterization of ECRH plasmas in TOMAS 在 TOMAS 系统中确定 ECRH 等离子体的特征

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0204690

J. Buermans, A. Adriaens, S. Brezinsek, K. Crombé, N. Desmet, L. Dittrich, A. Goriaev, Y. Kovtun, L. D. López-Rodríguez, P. Petersson, M. Van Schoor

{"title":"Characterization of ECRH plasmas in TOMAS","authors":"J. Buermans, A. Adriaens, S. Brezinsek, K. Crombé, N. Desmet, L. Dittrich, A. Goriaev, Y. Kovtun, L. D. López-Rodríguez, P. Petersson, M. Van Schoor","doi":"10.1063/5.0204690","DOIUrl":"https://doi.org/10.1063/5.0204690","url":null,"abstract":"To improve the plasma performance and control the density and plasma quality during the flat top phase, wall conditioning techniques are used in large fusion devices like W7-X and in JT60-SA. To study the performance of electron cyclotron wall conditioning, numerous experiments were performed on the TOroidally MAgnetized System, which is operated by LPP-ERM/KMS at the FZ-Jülich. It is a facility designed to study plasma production, wall conditioning, and plasma–surface interactions. The produced electron cyclotron resonance heating plasmas are characterized in various conditions by density and temperature measurements using a movable triple Langmuir probe in the horizontal and the vertical direction, complemented by video and spectroscopic data, to obtain a 2D extrapolation of the plasma parameters in the machine. A way to calibrate the triple Langmuir probe measurements is also investigated. These data can be used to determine the direction of the plasma drift in the vessel and identify the power absorption mechanisms. This will give more insight in the plasma behavior and improve the efficiency of wall conditioning and sample exposure experiments.","PeriodicalId":510396,"journal":{"name":"Physics of Plasmas","volume":"110 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141135755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum: “Creating and studying a scaled interplanetary coronal mass ejection” [Phys. Plasmas 31, 042901 (2024)] 勘误："创建并研究按比例的行星际日冕物质抛射" [Phys. Plasmas 31, 042901 (2024)]

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0213828

K. Bryant, R. P. Young, H. LeFevre, C. Kuranz, J. Olson, K. McCollam, Cameron Kuchta, C. Forest

引用次数: 0

Directly driven magnetized fast-ignition targets with steep density gradients for inertial fusion energy 用于惯性聚变能的具有陡峭密度梯度的直接驱动磁化快速点火目标

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0197817

A. B. Sefkow, B. G. Logan, M. Tabak

引用次数: 0

Fluid simulation of atmospheric argon RF dielectric barrier discharges: Role of neutral gas temperature 大气氩射频介质势垒放电的流体模拟：中性气体温度的作用

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0202078

Ze-Hui Zhang, Ke-Xin Zhong, Yue Liu, Wei Wang, Yi-Nan Wang, De-Zheng Yang

引用次数: 0

A numerical study of electron-magnetohydrodynamics tearing modes in parameter ranges of experimental interest 实验参数范围内电子磁流体力学撕裂模式的数值研究

Physics of Plasmas Pub Date : 2024-05-01 DOI: 10.1063/5.0205061

H. Betar, D. Del Sarto, A. Ghizzo, F. Brochard, D. Zarzoso

引用次数: 0

Creating and studying a scaled interplanetary coronal mass ejection 创建和研究按比例的行星际日冕物质抛射

Physics of Plasmas Pub Date : 2024-04-01 DOI: 10.1063/5.0187219

K. Bryant, R. P. Young, H. LeFevre, C. Kuranz, J. Olson, K. McCollam, C. Forest

{"title":"Creating and studying a scaled interplanetary coronal mass ejection","authors":"K. Bryant, R. P. Young, H. LeFevre, C. Kuranz, J. Olson, K. McCollam, C. Forest","doi":"10.1063/5.0187219","DOIUrl":"https://doi.org/10.1063/5.0187219","url":null,"abstract":"The Sun, being an active star, undergoes eruptions of magnetized plasma that reach the Earth and cause the aurorae near the poles. These eruptions, called coronal mass ejections (CMEs), send plasma and magnetic fields out into space. CMEs that reach planetary orbits are called interplanetary coronal mass ejections (ICMEs) and are a source of geomagnetic storms, which can cause major damage to our modern electrical systems with limited warning. To study ICME propagation, we devised a scaled experiment using the Big Red Ball (BRB) plasma containment device at the Wisconsin Plasma Physics Laboratory. These experiments inject a compact torus of plasma as an ICME through an ambient plasma inside the BRB, which acts as the interplanetary medium. Magnetic and temperature probes provide three-dimensional magnetic field information in time and space, as well as temperature and density as a function of time. Using this information, we can identify features in the compact torus that are consistent with those in real ICMEs. We also identify the shock, sheath, and ejecta similar to the structure of an ICME event. This experiment acts as a first step to providing information that can inform predictive models, which can give us time to shield our satellites and large electrical systems in the event that a powerful ICME were to strike.","PeriodicalId":510396,"journal":{"name":"Physics of Plasmas","volume":"236 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140762107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review and meta-analysis of electron temperatures from high-intensity laser–solid interactions 高强度激光与固体相互作用产生的电子温度回顾与荟萃分析

Physics of Plasmas Pub Date : 2024-04-01 DOI: 10.1063/5.0197279

D. Rusby, A. J. Kemp, S. Wilks, K. G. Miller, M. Sherlock, H. Chen, R. Simpson, D. Mariscal, K. Swanson, B. Djordjević, A. J. Link, G. J. Williams, A. J. Mackinnon

{"title":"Review and meta-analysis of electron temperatures from high-intensity laser–solid interactions","authors":"D. Rusby, A. J. Kemp, S. Wilks, K. G. Miller, M. Sherlock, H. Chen, R. Simpson, D. Mariscal, K. Swanson, B. Djordjević, A. J. Link, G. J. Williams, A. J. Mackinnon","doi":"10.1063/5.0197279","DOIUrl":"https://doi.org/10.1063/5.0197279","url":null,"abstract":"The accelerated electron spectrum from high-intensity laser–solid interaction is often conveniently described using a Boltzmann distribution, whose temperature is known within the field as the hot-electron temperature. The importance of the electron temperature is highlighted by the sheer number of experimental and simulation studies on the subject over the past three decades. Recently, multi-kJ, multi-ps pulses have yielded electron spectra with temperatures far beyond the expected ponderomotive result. Expressions that predict the electron temperature considering laser parameters beyond intensity and wavelength have been developed, albeit using small datasets. In this review, we present what is, to the best of our knowledge, the largest dataset of electron temperatures gathered from experimental measurements and particle-in-cell simulations. This dataset allows us to compare existing analytical and empirical hot-electron temperature scaling models over a wide parameter range. We also develop new scaling models that incorporate the laser pulse duration of the laser and the plasma scale length. Three models that include pulse-duration and scale length dependence are especially successful at predicting both simulated and experimental data. The dataset will soon be made publicly available to encourage further investigation.","PeriodicalId":510396,"journal":{"name":"Physics of Plasmas","volume":"67 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140795327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0