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相关论文: Energetic-particle-modified global Alfv\'{e}n eige…

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Gyrokinetic theory of nonlinear mode coupling as a mechanism for toroidal Alfven eigenmode (TAE) saturation in the fusion plasma related parameter regime is presented, including 1) para- metric decay of TAE into lower kinetic TAE (LKTAE)…

等离子体物理 · 物理学 2018-10-15 Zhiyong Qiu , Liu Chen , Fulvio Zonca , Wei Chen

The nonlinear dynamics of energetic-particle (EP) driven geodesic acoustic modes (EGAM) is investigated here. A numerical analysis with the global gyrokinetic particle-in-cell code ORB5 is performed, and the results are interpreted with the…

等离子体物理 · 物理学 2018-02-14 A. Biancalani , I. Chavdarovski , Z. Qiu , A. Bottino , D. Del Sarto , A. Ghizzo , O. Gurcan , P. Morel , I. Novikau

Scattering between individual charges and collective modes in materials governs fundamental phenomena such as electrical resistance, energy dissipation, switching between different phases, and ordering. The study of such scattering requires…

In this work, we present a novel kind of energetic particle modes with frequencies in the range of thermal ion diamagnetic and/or transit frequencies in burning plasmas. It is shown that the continuum structure can be broken by the…

等离子体物理 · 物理学 2024-04-09 Yang Li

Analytic treatment is presented of the electrostatic instability of an initially planar electron hole in a plasma of effectively infinite particle magnetization. It is shown that there is an unstable mode consisting of a rigid shift of the…

等离子体物理 · 物理学 2019-09-25 I H Hutchinson

Electron-electron (e-e) interactions assume a cardinal role in solid-state physics. Quantifying the e-e scattering length is hence critical. In this paper we show that the mesoscopic phenomenon of transverse magnetic focusing (TMF) in…

介观与纳米尺度物理 · 物理学 2022-07-07 Adbhut Gupta , Jean J. Heremans , Gitansh Kataria , Mani Chandra , Saeed Fallahi , Geoffrey C. Gardner , Michael J. Manfra

In collision-poor space plasmas protons with an excess of kinetic energy or temperature in direction perpendicular to background magnetic field can excite the electromagnetic ion cyclotron (EMIC) instability. This instability is expected to…

等离子体物理 · 物理学 2021-02-03 S. M. Shaaban , M. Lazar , R. Schlickeiser

Large amplitude kinetic Alfv\'{e}non (exact Alfv\'{e}n soliton) matching condition is investigated in quasineutral electron-ion and electron-positron-ion plasmas immersed in a uniform magnetic field. Using the standard pseudopotential…

等离子体物理 · 物理学 2015-05-27 M. Akbari-Moghanjoughi

Spontaneous nonlinear excitation of geodesic acoustic mode (GAM) by toroidal Alfv\'en eigenmode (TAE) is investigated using nonlinear gyrokinetic theory. It is found that, the nonlinear decay process depends on thermal ion \beta value.…

等离子体物理 · 物理学 2019-09-04 Zhiyong Qiu , Liu Chen , Fulvio Zonca , Wei Chen

ASDEX Upgrade has developed multiple massive gas injection (MGI) scenarios to investigate runaway electron (RE) dynamics. During the current quench of the MGI induced disruptions, Alfv\'enic activity is observed in the 300-800 kHz range.…

High resolution experiments have recently lead to a complete identification (energy, spin, and parity) of 151 nuclear levels up to an excitation Energy of Ex= 6.20 MeV in 208Pb. We present a thorough study of the fluctuation properties in…

核理论 · 物理学 2017-01-11 B. Dietz , A. Heusler , K. H. Maier , A. Richter , B. A. Brown

Event-by-event (ebe) fluctuations in mean pseudorapidity values of relativistic charged particles in full phase space is studied by analysing experimental data on $^{16}O-AgBr$ collisions at 14.5A, 60A, and 200A GeV/c and $^{32}S-AgBr$…

高能物理 - 唯象学 · 物理学 2022-05-31 Bushra Ali , Shaista Khan , Anuj Chandra , Shakeel Ahmad

The aim of the present study is to analyze the saturation regime of the Toroidal Alfven Eigenmodes (TAE) in the LHD plasma, particularly the MHD burst. The linear and nonlinear evolution of the TAEs are simulated by the FAR3d code that uses…

等离子体物理 · 物理学 2023-04-18 J. Varela , D. A. Spong , Y. Todo , L. Garcia , Y. Ghai , J. Ortiz , R. Seki

Consequences of an exceedingly strong electric field (E field) on the ground state energetics and transport properties of a 2D spinless electron gas in a perpendicular magnetic field (a Quantum Hall Effect (QHE) configuration) are…

介观与纳米尺度物理 · 物理学 2016-09-01 Georgios Konstantinou , Konstantinos Moulopoulos

We examine wave propagation and the formation of shocks in strongly magnetized plasmas by applying a variational technique and the method of characteristics to the coupled magnetohydrodynamic (MHD) and quantum-electrodynamic (QED) equations…

高能物理 - 理论 · 物理学 2009-10-31 Jeremy S. Heyl , Lars Hernquist

Highly-excited single-particle states in nuclei are coupled with the excitations of a more complex character, first of all with collective phonon-like modes of the core. In the framework of the quasiparticle-phonon model we consider the…

核理论 · 物理学 2009-11-10 Chavdar Stoyanov , Vladimir Zelevinsky

Generation of zonal ow (ZF) by energetic particle (EP) driven toroidal Alfven eigenmode (TAE) is investigated using nonlinear gyrokinetic theory. It is found that, nonlinear resonant EP contri- bution dominates over the usual Reynolds and…

等离子体物理 · 物理学 2016-10-12 Zhiyong Qiu , Liu Chen , Fulvio Zonca

Phase Resolved Optical Emission Spectroscopy (PROES) measurements combined with 1d3v Particle-in-Cell/Monte Carlo Collision (PIC/MCC) simulations are performed to investigate the excitation dynamics in low-pressure capacitively coupled…

等离子体物理 · 物理学 2023-07-21 Aranka Derzsi , Mate Vass , Ranna Masheyeva , Benedek Horvath , Zoltan Donko , Peter Hartmann

Zero frequency zonal flow (ZFZF) excitation by trapped energetic electron driven beta-induced Alfven eigenmode (eBAE) is investigated using nonlinear gyrokinetic theory. It is found that, during the linear growth stage of eBAE, resonant…

等离子体物理 · 物理学 2023-07-19 Zhiyong Qiu , Liu Chen , Fulvio Zonca , Ruirui Ma

The parametric decay of toroidal Alfv\'en eigenmode (TAE) in nonuniform plasmas is investigated using nonlinear gyrokinetic equation. It is found that, the plasma nonuniformity not only significantly enhances the nonlinear coupling…

等离子体物理 · 物理学 2024-03-06 Zhiwen Cheng , Kexun Shen , Zhiyong Qiu