Search Results - "Teaca, Bogdan"
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1
Structure of Plasma Heating in Gyrokinetic Alfvénic Turbulence
Published in Physical review letters (07-12-2016)“…We analyze plasma heating in weakly collisional kinetic Alfvén wave turbulence using high resolution gyrokinetic simulations spanning the range of scales…”
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2
Gyrokinetic turbulence: between idealized estimates and a detailed analysis of nonlinear energy transfers
Published in New journal of physics (01-04-2017)“…Using large resolution numerical simulations of gyrokinetic (GK) turbulence, spanning an interval ranging from the end of the fluid scales to the electron…”
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3
Role of phase synchronisation in turbulence
Published in AIP advances (01-11-2017)“…The role of the phase dynamics in turbulence is investigated. As a demonstration of the importance of the phase dynamics, a simplified system is used, namely…”
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4
Locality and universality in gyrokinetic turbulence
Published in Physical review letters (05-12-2012)“…The nature of nonlinear interactions in gyrokinetic turbulence, driven by the ion-temperature gradient instability, is investigated using direct numerical…”
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ALLIANCE: Spectral solver for kinetic plasma turbulence
Published in Journal of computational physics (15-12-2023)“…The ALLIANCE (ALLIANCE - spectrAL soLver for kInetic plAsma turbuleNCE) code is developed to solve a new set of four-dimensional electromagnetic drift-kinetic…”
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6
Acceleration of particles in imbalanced magnetohydrodynamic turbulence
Published in Physical review. E, Statistical, nonlinear, and soft matter physics (11-08-2014)“…The present work investigates the acceleration of test particles, relevant to the solar-wind problem, in balanced and imbalanced magnetohydrodynamic turbulence…”
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7
A Look at Phase Space Intermittency in Magnetized Plasma Turbulence
Published in The Astrophysical journal (20-11-2019)“…In a proton-electron magnetized plasma, we analyze turbulence at kinetic scales captured by a gyrokinetic formalism. The interval of scales spans the range…”
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8
COSMIC-RAY PITCH-ANGLE SCATTERING IN IMBALANCED MHD TURBULENCE SIMULATIONS
Published in The Astrophysical journal (20-09-2015)“…ABSTRACT Pitch-angle scattering rates for cosmic-ray particles in MHD simulations with imbalanced turbulence are calculated for fully evolving electromagnetic…”
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9
Structure of Plasma Heating in Gyrokinetic Alfvénic Turbulence
Published in Physical review letters (07-12-2016)“…Here, we analyze plasma heating in weakly collisional kinetic Alfvén wave turbulence using high resolution gyrokinetic simulations spanning the range of scales…”
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10
ALLIANCE: Spectral solver for kinetic plasma turbulence
Published 09-09-2023“…The ALLIANCE code is developed to solve a new set of four-dimensional electromagnetic drift-kinetic equations in slab geometry [J. Plasma Phys. 88 905880117…”
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11
Solving Triad Reduced Interactions for Drift Kinetic Equations
Published 23-09-2021“…We present the TRIDK code, which is written in Python, that solves Triad Reduced Interactions for a Drift Kinetic system of equations. The four-dimensional…”
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12
Four-dimensional equations for the study of electromagnetic plasma turbulence in a drift kinetic limit
Published 07-09-2021“…For a magnetised plasma in a straight magnetic guide field, we derive a set of four-dimensional kinetic equations, which can capture electromagnetic turbulence…”
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13
Energy transfers in forced MHD turbulence
Published in Journal of turbulence (01-01-2006)“…The energy cascade in magnetohydrodynamics is studied using high resolution direct numerical simulations of forced isotropic turbulence. The magnetic Prandtl…”
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14
Sub-grid-scale effects in magnetised plasma turbulence
Published 05-02-2021“…J. Plasma Phys. 87 (2021) 905870209 In the present paper, we use a coarse-graining approach to investigate the nonlinear redistribution of free energy in both…”
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15
Gyrokinetic turbulence: between idealized estimates and a detailed analysis of nonlinear energy transfers
Published 21-08-2017“…2017 New J. Phys. 19 045001 Using large resolution numerical simulations of GK turbulence, spanning an interval ranging from the end of the fluid scales to the…”
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16
The anisotropic redistribution of free energy for gyrokinetic plasma turbulence in a Z-pinch
Published 18-12-2015“…For a Z-pinch geometry, we report on the nonlinear redistribution of free energy across scales perpendicular to the magnetic guide field, for a turbulent…”
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17
Simple advecting structures and the edge of chaos in subcritical tokamak plasmas
Published 12-11-2018“…In tokamak plasmas, sheared flows perpendicular to the driving temperature gradients can strongly stabilize linear modes. While the system is linearly stable,…”
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18
Kinetic intermittency in magnetized plasma turbulence
Published 12-07-2016“…We employ magnetized plasma turbulence, described by a gyrokinetic formalism in an interval ranging from the end of the fluid scales to the electron…”
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19
The energetic coupling of scales in gyrokinetic plasma turbulence
Published 03-07-2014“…In magnetized plasma turbulence, the couplings of perpendicular spatial scales that arise due to the nonlinear interactions are analyzed from the perspective…”
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20
A nonlinear approach to transition in subcritical plasmas with sheared flow
Published 08-12-2017“…In many plasma systems, introducing a small background shear flow is enough to stabilize the system linearly. The nonlinear dynamics are much less sensitive to…”
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